Phone number to ip address converter. Each number in the IP address can range from 0 to 255.

Phone number to ip address converter. where: PHONE_NUMBER – is a destination phone number IP_ADDRESS_OF_SMSEAGLE – is the IP address of your device. Why would you need to convert an IP to decimal? May 20, 2025 · Your go-to Free IP Subnet Calculator for IPv4/IPv6, CIDR, Wildcard Masks, and MAC Conversion. Try it instantly with no login. This innovative tool swiftly identifies and displays distinct, valid IPv4 addresses extracted from any submitted text, guaranteeing accurate results. 123. It also converts compressed (compact) and uncompressed (extended) IPv6 addresses back and forth. Simple and Easy Decimal / INT / Number to Internet Protocol version 4 Converter. IPAddressGuide IPv4 Address to IP Decimal Conversion: A free tool for translating between dotted-decimal and decimal formats. What is a hostname? What is an IP address? Find the IP addresses for any website or domain name. That's like asking how to take a MAC A VOIP host uses a system called a phone number to IP address (PN-to-IP) gateway to translate a phone number to an IP address. Bestipfinder offers a handy online tool Decimal to IP converter. Quickly convert an IPv4 address to decimal with this IP to decimal converter. Check My IP Address - IMEI. Trusted by web developers, network administrators IP conversion How to use IP converter Input IP address in valid format (appropriate radix and dot-decimal notation or normal form) and all other fields will be updated accordingly; Invalid inputs will show no results. IPv6 can use short-hand notation where leading zeros are abbreviated with :: (double colons). In this case, x represents the position of the section from right to left, starting with 0. To calculate supernets use Supernet calculator. Advanced web analytics at the tap of a finger! Convert decimal numbers to IP addresses with our free online Decimal to IP Address Calculator. Jul 8, 2025 · Learn how to get the IP address from a phone number and identify the location of the caller. "because i want to develop the algorithm for conversion of mobile to ip and vice versa" It doesn't work that way. 1 day ago · IP Location Finder FAQ What is IP Geolocation? IP geolocation is the mapping of an IP address to the geographic location of the internet from the connected device. e. Dec 17, 2024 · To convert your landline to VoIP, you'll need a high-speed internet connection (minimum 1 Mbps), a VoIP adapter or IP phone, and a VoIP service provider. Great for network admins, developers, and IP mapping. IP Address to Number Converter - a fast and free online tool to convert IPv4 addresses into decimal numbers. We offer a vast range of IP address tools to discover details about IP addresses. You can use it to encrypt your IP address or decrypt the encrypted IP address to the phone number shared secretly IP Address to Phone Number This tool helps you to generate IP address based on provided Phone number. Essential for network administrators and IT professionals. My IP, Whois, Mac Vendor Lookup, Cisco Rate Limit Calc, IP Calc, CRON Editor and more. An IP address is a unique address that identifies a device on the internet or a local network. IPv4 address is a 32-bit number, and IPv6 is a 128-bit number. com) that you enter below. iplocation. Free comprehensive network utility tools for IP address conversion, subnet calculations, DNS lookups, ping testing and IP classification. The following utility converts the IP (TCP/IP) address to other browser URL addressable forms. How can you use the Phone number to IP Converter? Sometimes user wants to send phone number as encrypted code but easy to solve, this tool convert number to IP. The PN-to-IP gateway is similar to the Domain Name System (DNS) in that it is a database that maps phone numbers to IP addresses. This tool generates a IP based on Decimal converter logic. Useful if you store your IP addresses as integers in your database. IP blacklist check, whois lookup, dns lookup, ping, and more!. Enter an IP address that looks like: 10. ) participates in a VoIP call, its IP address is converted to a telephone number, which is then switched to the PSTN network. 1 will be converted to 11000000. Online Decimal to IP Converter to convert Decimal to IP address. 1". This tool allow you to copy, paste, download and delete your output. Our IP Intelligence Ecosystem processes terabytes of data every month to extract important insights. Mar 31, 2025 · Whitepages, Spokeo, and TrueCaller are a few platforms with extensive caller databases, including individuals and VoIP phone numbers. Internet phone numbers with VoIP features. Bestipfinder offers a handy online tool to convert the phone number to IP address. Just input your IPv4 address and get instant results! Convert an ip address into decimal, binary, hexadecimal or event in ipv6 Convert IPv4 addresses into their 32-bit decimal representation using this free IP to Decimal Converter. These days to access any website, we type a domain name in the navigation bar, but behind the scenes, we are making a request to an IP address Aug 30, 2023 · Discover how to trace an IP address using a phone number, exposing the user's location and digital identity. Provides convenient solutions for web development, network configuration, and digital address positioning. IP Address Converter is a free online tool that allows to convert an IP address between different formats (decimal, hex) and perform IPv4 to IPv6 conversion. After conversion from IP to ipv6, you can see the ipv6 expanded version as well as ipv6 compressed version. 0. Introduction Converting a phone number into an IP address format is a fascinating exercise that showcases the flexibility and power of Python’s string manipulation capabilities. This online tool lets you extract phone numbers from text online, a free online phone number extractor to extract phone numbers from a string. 77. This is necessary because, while humans can easily remember and understand domain names like "www. It helps to locate and communicate with any devices present in this network through the internet. Learn how to find the IP Address of your device, provided by the internet service provider. However, in some cases it may be useful to convert an IP address to decimal format, which is a base-10 number. In addition to conversions, we also display hostname (if reverse DNS entry is found), and the location of the IP address. World's simplest online decimal number to IP address converter for web developers and programmers. 123 (IPv4 addresses). The report will help you verify identity of the email address owner. Gain insights into this powerful investigatory technique. IP to Decimal IP to Decimal Converter converts an IP Address to a Decimal Number. Try the best internet phone number service for business risk-free! Buy IP phone numbers online, no setup fees. Free service to locate an IP address on Google Maps. Com and Computer Support Group Enter an IP Address Use the IP Address lookup to check an IP and display details related to an IP address. Features an in-depth guide to computer networking, IP addressing, OSI model, port information, VLSM, and IT career paths. 10101000. 5. Aug 1, 2001 · IP address stands for Internet Protocol Address. May 1, 2025 · Conclusion: The Path Forward in the Digital Age The quest for a “phone number to IP address converter free” might seem simple. You can use the tool to decrypt the encrypted binary number into IP address again secretly. However, the reality is far more complex. Sometimes user wants to send phone number as encrypted code but easy to solve, this tool convert number to IP. Converts a alphanumeric phone number to its numeric equivalent. An IP to Decimal Converter is a tool that takes an IP address written in dotted decimal format and converts it into a single decimal number. The letters are used to create an memorable phone number like 1-800-Flowers, which is used on both mobile and landline telephones. Simplify IP address calculations and network administration. Instantly convert IP addresses to decimal format with our free online IP to decimal converter. Domain to IP Converter is a free online tool that allows you to find the IP address associated with a specific domain name. Which can be used as to share as fun, secure or for to solve puzzle problems. 00000001 in binary. May 3, 2022 · In VoIP, each telephone number has a mapped IP address. Subnet Mask - In simply terms, the subnet mask is used to identify if an IP address is in a particular network. Convert an IPv4 address into an Octal, Hexadecimal and Integer values. Perfect for developers, students, and network engineers. Bestipfinder offers a handy online tool IP to Decimal converter. Connect your This specialized translator bridges the gap between human-readable phone numbers and their raw numerical equivalents. Each number in the IP address can range from 0 to 255. By geographically mapping the IP address, it provides you with location information such as the country, state, city, zip code, latitude/longitude, ISP, area code, and other information. Free phone number lookup service for mobile, landline, and VOIP numbers. It also converts IPv4 to IPv6. This tool supports the search feature to search Output data. It’s ideal for developers, QA testers, or trainers who want clean, formatted IPs without relying on real ones. You may also search a person by a phone number. To do classful subnet calculations use Subnet calculator. Convert IP addresses between binary, decimal, and hexadecimal formats with our free online IP Address Converter tool. Grabify IP Logger & URL Shortener allows you to tracks IP address, track locations and much more. This tool extracts all IPv4 addresses found on the submitted text and shows only unique and valid IPv4 addresses. URL to IP lookup, also known as DNS lookup or "domain name resolution," is the process of mapping a domain name to its corresponding IP address. To use this tool, enter two IPv4 addresses below in dotted format (e. This conversion is useful in networking, programming, and database management where IP addresses are sometimes represented as single decimal values. g. ” The device can convert a decimal to an IP address in a human-readable format. Easily switch between different representations of an IP address. We would like to show you a description here but the site won’t allow us. Convert IP addresses between decimal, binary, octal, and hexadecimal formats. NetTools. Lookup your public IPv4 or IPv6 address and where are you located? Find a geolocation of your IP address including latitude, longitude, city, region and country. REWORK: Reworked site layout to improve navigability FEATURE: Created a convert page with HEX to IP conversion (with more to be added in the future). Lookup phone number details like carrier, line type, location, name, and more. What is IP Geolocation? IP Geolocation is the identification of the geographic location of a device, such as a mobile phone, gadget, laptop, server and so on, by using an IP address. Apr 30, 2023 · Easily convert an IPv4 address to a long number (decimal) with our free online converter. To manually convert the IP to decimal, do the following steps. 00000001. If you're working with network configurations, logs, or databases that use different formats, our online converter can streamline the process of translating between them. 0/24 is a representation of IPv4 addresses with the range of 4. Convert IPv4 addresses between different formats easily. 13 (four numbers separated by periods - each number should be between 0-255). Jan 22, 2018 · I am trying to figure out the IP address for an iPhone using the phone number only is it possible to identify this with only a phone number? Cellular phone Aug 26, 2012 · In reading the original post, and the subsequent follow up posts in response to people's answers, I get the distinct impression that your original "10 digit decimal" is actually a phone number that you want to somehow turn into an IP address. The text of the email is the text of the SMS message (optionally you can append email subject at the beginning of SMS message). 77 is equal to: 676177741 The IP Address Decimal Coverter Tool Our IP to Decimal converter or Decimal to IP tool supports both IPv4 and IPv6. Bestipfinder offers a handy online tool Binary to IP converter. IPv4 Address Format An IPv4 address is a 32-bit number that identifies an endpoint device in an Internet Protocol Version 4 (IPv4) network VoIP Phone Adapters: How does a VoIP adapter (phone adapter) work? A VoIP adapter is a protocol converter (bridge) between analog phones and the digital (IP) network that carries voice calls. ThatsThem is a 100% free people search providing phone number, email address, and postal address so you can find the person you're looking for. Our tool demonstrates phone number to IP conversion for educational and networking purposes. Convert IP Address to Decimal and Binary Formats. An IP address is analogous to a phone number. You can use the tool to encrypt your IP address to a decimal number system and share it secretly. It is the foundation of internet communication, similar to a phone number or mailing address, ensuring that data packets are routed correctly to the destination device. IP addresses are typically represented in dotted-decimal format, with four numbers separated by dots, such as "192. 168. PHONE_NUMBER @ IP_ADDRESS_OF_SMSEAGLE will be converted to SMS message. See Output Options. 0 to 4. All 4 fields must be filled in, even if the value is 0, please enter 0. Sometimes user wants to send IP address as encrypted code but easy to solve, this tool convert number to IP. club - useful tools for network administrator. In essence, it works as a home address for a particular device on a network, like your phone or computer. com provides a free online IP address to number and number to IP address conversion tool. This geo IP tool is useful to know where is located an IPv4 or IPv6 address on Google Maps, so you can trace the IP address location. Whenever a device (PC, IP phone, ATA, etc. Convert IP addresses to phone number format for VoIP and telecommunications. Bestipfinder offers a handy online tool IP address to the Phone number converter. Our Domain IP Lookup tool finds the IP address of any online domain. 255. With IPLogger or IP Grabber, you can find your own IP address, find location of IP address, and track the exact location of any mobile device or PC, check URL for hidden redirects for safety reasons. The internationally standard phone dialpad has each number mapped to 3 or 4 English alphabet letters. Just paste your IP address in the form below, press the Convert button, and you'll get an IP as a single decimal number. Simplify network analysis and configuration. Works with IPv4 and IPv6. e 2130706433). Hex to IP address helps to convert Hex to IP address online (hexadecimal ip address). 1. May 19, 2025 · IP Logger is a URL Shortener with advanced analytics for the traffic through your links, visitors on your online store, blog or website. 4. See IPv6 Address for details. IP to decimal converter is a free IP address tool that converts the IPv4 or IPv6 address to its decimal form. infoIf you ever wonder " What is my public IP Address ", this site will let you check your external IP address immediately, for free and easy. yahoo. Conversely, to convert a binary IP address to decimal, each 8-bit binary number is converted to decimal by applying the following formula: What is Hexadecimal to IP Converter? A Hexadecimal to IP Converter is an online tool that converts hexadecimal values into standard IP addresses, typically used in networking (IPv4). Our IP Tools help you determine IP address of a computing device, and also help locate where they are. Supports both IPv4 and IPv6 address conversion. Use our convert tools to convert numbers, text and measurements to another format. Apr 30, 2023 · Easily convert a long number to an IPv4 address with our free online converter. Press a button – get a decimal IP. Discover a powerful web-based solution for extracting IP addresses effortlessly. Supports both IPv4 and IPv6. Check if a phone number is active or disconnected. To do classless calculations use CIDR calculator. World's simplest online IP to integer converter for web developers and programmers. 1) to decimal format (i. No ads, nonsense, or garbage. The IP address must be entered in the form of four octets, in each of which from 1 to 3 decimal digits, which are numbers from 0 to 255. Convert IP address between dot-decimal format, integer format, hex format, binary format and IPv4-mapped IPv6. See also Email Extractor URL Extractor Use the IP address and numeric address conversion tool to convert between IP addresses and integer numbers, supports converting IP addresses to decimal numbers or converting numbers to IP addresses. 11. 1) into its equivalent decimal number. All of these notaions are valid and correct in terms of standards. Simple API. The number 1 is usually used to retrieve a voice mail. The tool shows the IPv4/IPv6 address(es) of the domain as well as its hosting provider and location. This IP subnet calculator covers both IPv4 and IPv6 protocols, providing information such as IP address, network address, subnet mask, IP range, and more. Works with dot-separated hex IPs and hex numbers. Free IP Address Converter Tool. Visit one of these websites and enter the VoIP number you want to trace into the search bar. To Find IP Address of a HEX Number: Enter the HEX number in the respective text box and click on the Convert button provides the equivalent IP Address of a given HEX number. An IP Address to Decimal Calculator is a handy tool that converts a standard IPv4 address (e. Convert hexadecimal strings back to standard IPv4 or IPv6 addresses. , 4. Converters for Network and IP address Subnet Mask Converter (dotted decimal to bits format) Easily convert IPv4 to IPv6, decimal, binary, and octal with our simple tool. bejson. net," computers communicate using IP addresses. Why would I need to convert a decimal number to an IP address? Converting decimal numbers to IP addresses is crucial in networking and IT. Doing an IP looking can help you find out who may be using the voice over IP line and the ISP. Simply paste your IP addresses (supports both IPv4 and IPv6), and you'll receive the integer for them instantly. Convert any Url Link to Ip in just a few secs! Just add the domain name/website url & know the IP address & location of that website using Rankwatch’s domain to ip converter. IP Address Conversion Tool - Convert between CIDR, IP with netmask, and router configurations Here you can convert the IP address to decimal, binary, hexadecimal and octal. e 127. binary, decimal, and hexadecimal. Jul 8, 2025 · When someone with a VoIP phone places a call to someone else with a VoIP system, the voice data from their conversation simply travels back and forth from one IP address to another. IP Number Converter-summary IP and numbers are converted to each other, and the converted number is a 32-bit unsigned integer number. A Decimal To IP converter tool that will convert any decimal number (an IP number or integer representation of an IP address) into the dotted decimal format, with four numbers separated by dots, such as “192. The IP to Integer conversion tool converts a IPv4 (or IPv6) Address to a decimal number. Enter either a decimal value or an IP address in the text field, where you can automatically see the conversion happen within milliseconds. 1 IP Decimal Number = 16777216*192 + 65536*168 + 256*0 +1 IP Decimal Number = 3,232,235,521 However, manual doing the conversion is a little time-consuming, and chances of human errors are there. Dotted Octal Hexadecimal Integer IP to Number Converter (IPv4 and IPv6) This tool converts any IP address to a number and vice versa. The service will then provide you with the information it has about that number, such as the owner’s name and address. , 192. Convert Phone Number into ip address to share a phone number as secret or as to solve puzzle. IPv4 address is a 32-bit binary number, which is usually divided into 4 "8-bit binary numbers" (that is, 4 bytes). This is a free tool for translating IP addresses between dotted-decimal format and decimal format. 167. It supports both IPv4 and IPv6 formats. Instantly convert decimal numbers to IP address format with our free online decimal to IP converter. Email Address Trace (Paid) You may trace an email address with a paid service from InfoTracer (below), and find the owner of the email address as well as location and background report. World's simplest online hex to IP converter for web developers and programmers. By default 10 random IP addresses are generated, you can change this number below. First, select a provider that supports number porting and verify your current number's eligibility for transfer. A typical phone dialpad has each number mapped to 0, 3 or 4 alphabet letters Converts between IP addresses and numbers instantly; i. Suppose we have an IP address 192. This tool is very easily when you’re working with the network, databases, or those that store What is IP Geolocation? IP Geolocation is the identification of the geographic location of a device, such as a mobile phone, gadget, laptop, server and so on, by using an IP address. Nov 12, 2013 · Getting random phone calls? Check to see if its a VoIP number. You can use the tool to decrypt the encrypted decimal number into IP address again secretly. Provided for your use by CSGNetwork. 1, while IPv6 includes 2401:4900:1:1::/64. 2. Hexadecimal (Hex) is a base-16 number system, often used in computing and networking due to its efficiency in representing large binary values. There are two types of IP addresses: IPv4 or in the form of 192. An IP address (Internet Protocol Address) is a set of numbers used to identify and locate computers, devices, or network nodes on the internet. comContent blocked Please turn off your ad blocker. Free IP address tools provide a range of functionalities such as pinging an IP address, performing a traceroute to an IP address, converting an IP address into decimal value or CIDR format, and more, for both IPv4 and IPv6 formats. Just paste your hex IP address in the form below, press the Convert to IP button, and you'll get a dot-decimal IP. How does the Decimal to IP Converter work? The Decimal to IP Converter takes a decimal number as input and transforms it into its equivalent IP address by dividing the decimal value into four 8-bit parts. An IP address normally acts as a unique number for a combination of letters. Effortlessly extract IP addresses from text and enhance your online experience with this reliable and efficient resource. Convert and locate IP addresses Conversion of a 32bit IPv4 IP address between 4 formats: dotted quad decimal octet string (classic standard notation), decimal (base 10), hex (base 16) and binary (base 2). You can use the phone number to IP address converter to encrypt your phone number to IP and send it secretly. 0) Hostname to IP Address This tool will provide you the IP address (or addresses, if applicable) of the hostname (ie www. An IP address contains 4 numbers separated by dots. Obtain all available information on a given IP address or domain name such as Organization or the ISP that owns the IP address, including the country, state, city, address, contact phone numbers and e-mails 6. IP2Location IP Conversion Excel Add-In is a free add-in that enables users to convert a IPv4 address into an IP Number and vice-versa. Reverse DNS lookup (PTR) with the host utility and another host lookup on that result -- to see if the results match. Supports both IPv4 and IPv6 decimal conversion. This tool generates a Phone number on Decimal converter logic. Oct 10, 2024 · Discover how to convert a decimal to an IP address in Excel, using formulas to transform numerical data into IP format for network management. The tool will then use publicly available information to find the IP address associated with the phone number. The binary representation of the decimal number 192 is 11000000 (by reversing the order of the remainders) so the IP address 192. An easy-to-use, free, and quick browser-based tool for converting IP addresses to integers. Apr 15, 2025 · Discuss the correlation between IP addresses and phone numbers, analyze technical limitations and privacy protection mechanisms, and introduce how IP2world proxy IP can enhance anonymity and data security. However, when a VoIP call is placed to someone who is using a traditional landline phone system, an extra step is required. It's designed to accurately and seamlessly convert various formats, such as those incorporating hyphens, spaces, parentheses, and even extensions, into a pure numerical string. Feb 19, 2024 · IP Location IP to Decimal Conversion Tool: Converts IPv4 and IPv6 addresses to a human-readable decimal format. Don't cancel your existing landline service until the porting process is complete, which typically takes 2-4 weeks. Determine name, date, last-modified, version and operation system of the remote web server 8. Your public IP Address is written below. Code Beautify IP to Decimal Converter: Allows for easy copy-paste conversion for IPv4 addresses. To convert an IP address to integer notation, each section of the IP address (separated by ". Converts IP addresses to their numeric form, enabling online conversion of IP addresses to Int numbers, Int numbers to IP addresses, online IP address to Int number format, and supports number to IP address format, an online IP address and Int number conversion tool. Just paste your decimal IP address in the form below, press the Convert button, and you'll get a regular dot-separated IP. Convert IP addresses to decimal format, integer format, and more! Convert between unix timestamp and datetime formats. Online IP Address converter From Quad Decimal to All (Hexadecima, Binary, Octal, Integer) Here are some common calculations and tasks that an IP address calculator can help you with: IP Address Conversion: Convert between different IP address formats, such as from decimal to binary representations. IPv4 Conversion IPv4 addresses are 32-bit numbers typically represented in decimal format as four 8-bit fields separated by periods (e. This online tool shows both IPv4 and IPv6 addresses as well as their hosting provider and location. You can generate as many IP-style outputs as needed from different numbers. Free, client-side Hex to IP conversion with input format options. Domain To IP Converter This tool allows you to bulk convert a list of domain names into a list of IP addresses. Convert binary representations of IP addresses into standard IPv4 format effortlessly with our free online Binary to IP Address Converter. It is widely used for various purposes, including targeting content and advertisements, enhancing security measures, providing localized services, and conducting market research. A typical phone dialpad has each number mapped to 0, 3 or 4 alphabet letters Learn how to find phone number by IP address with our tools and insights, balancing privacy concerns and technical capabilities efficiently. CIDR (Classless Inter-Domain Routing) format is a compact format of expression an IP address along with it routing information. Subnetting: Calculate subnet masks, network addresses, and broadcast addresses for a given IP address and subnet size. FEATURE: Added option to create a link for current configuration and copy it to clipboard FEATURE: RFC numbers added alongside the IP kind label BUGFIX: Fixed minimum mask value (0 was not possible) You can choose the number of Phone Numbers per line (default 1) You may choose the output delimiter if multi-column output or use comma (the default). An IP (Internet Protocol) address, on the other hand, is a series of Based on your IP address, make subnetting operations with VLSM/CIDR, hexadecimal/binary conversion and more. Simply paste a list of domain names (one per line) and submit the form to batch convert them to the IP addresses for the servers they're hosted on. That means the device converts the IP address to a human-readable or integer format. Convert phone numbers to IP address format for VoIP and telecommunications. Convert IP addresses into binary format effortlessly with our free online IP Address to Binary Converter. IPv4 Decimal Number The IPv4 address 40. A CIDR notation of 4. Our email tools verify email address, validate deliverability and offer traceability. What can you do with Hex to IP Address tool? Hex to IP Conversion is very rare and unique tool to convert hexadecimal to ip. Fast, accurate, and user-friendly tool. Press a button – get an IP. ") is multiplied by 256 x. Quickly convert any domain or URL into its corresponding IP address with our powerful Domain to IP tool. The netmask in “bits format” is also known as mask in CIDR format (CIDR=Classless Inter-Domain Routing). Free IP to decimal converter lets you translate an IPv4 address from dotted-decimal address (i. 12. Extract IP addresses online. Convert an alphabetic word into a phone number. IP Intelligence Ecosystems An IP address carries information beyond just geolocation, ASN, ISP and Domain details. Our tool demonstrates IP to phone number conversion for educational and networking purposes. This is similar to the way web addresses (domain names) and email addresses are mapped to IP addresses. Ignore phone numbers under a certain number of digits. Search information like geolocation, city, state, ISP finder, domain name and more. 1). While this process doesn’t have practical applications in networking, it serves as an excellent way to deepen your understanding of string operations, slicing, and data formatting in Python. IP Tools can also be used to diagnose network problems, and help setup networks. Converts a alphanumeric phone number to its numeric equivalent. See relevant content for fancytextconverter. When converted to binary notation, the subnet maske always begin with a series of 1s followed by a series of 0s. To use a Phone Number to IP Address Converter, simply enter the phone number and click the "Convert" button. Easily convert between all IP Address Formats. Use this online random IP generator to generate a list of random IP addresses in the format 123. Jul 13, 2018 · MERGED QUESTION Question from 1234apjm : "With phone number how to find location and address" How to find a phone number's location and address This tool will convert an IPv4 address range into CIDR format. ymkk rhki bhrba ovq zhppv sdic gysgb mba dnuuz cemhdf