Network Tools

HTTP Header Checker

Check the response headers sent by the server

DNS Records Checker

Free DNS records lookup tool

IPv4 to IPv6 Converter

IPv4 to IPv6 Converter

IPv6 to IPv4 Converter

IPv6 to IPv4 Converter

IP to Decimal Converter

Convert IP addresses to decimal format with our IP to Decimal converter tool. Transform IPv4 and IPv6 addresses into their decimal representations easily.

IP to Octal Converter

Convert IP addresses to octal format. Free online IP to octal converter supporting both IPv4 and IPv6 addresses.

CIDR Calculator

Calculate network information from CIDR notation. Free online CIDR calculator showing network address, broadcast address, subnet mask, and host range.

Hostname to IP

Convert hostname to IP address instantly. Free online hostname to IP converter that resolves domain names to their corresponding IPv4 and IPv6 addresses using DNS lookup.

DNS Lookup

Query DNS records for any domain. Look up A, AAAA, MX, NS, TXT, CNAME, and other DNS record types instantly.

Octal to IP Converter

Convert octal format to IP address instantly. Free online octal to IP converter that converts octal-encoded IP addresses back to standard IPv4 or IPv6 format.

IPv6 to Binary Converter

Convert IPv6 addresses into 128-bit binary groups instantly

IP to Hex Converter

Convert IPv4 addresses to hexadecimal formats instantly.

IP to Hostname

Convert IPv4 addresses into hostnames via reverse DNS PTR lookup in real time.

Binary to IP Converter

Convert binary IPv4 notation into standard dotted-decimal IP address format instantly.

Decimal to IP Converter

Convert decimal IPv4 integers into dotted IP addresses instantly.

Hex To IP Converter

Convert 32-bit hexadecimal IPv4 values to dotted-decimal notation with validation and grouped hex preview.

IP to Binary Converter

Convert IPv4 addresses to dot-separated 32-bit binary instantly. This free browser tool validates each octet and supports multi-line input for quick conversion.

Binary to IPv6 Converter

Convert a 128-bit binary string into its corresponding IPv6 address with zero-compression, casing support, and detailed address block visualization.

IP Address Lookup

Find your public IP address and get detailed geolocation information including country, city, ISP, and more. Free online IP lookup tool.

Bandwidth Calculator

Calculate bandwidth needs including data unit conversion, download/upload time estimation, website bandwidth requirements, and hosting bandwidth conversion. Supports bits, bytes, and all metric multiples.

MAC Address Analyzer

Validate, lookup device vendor, and analyze MAC address details like Unicast/Multicast, UAA/LAA, and multiple formats.

IPv4 Address Converter

Convert an IPv4 address to decimal, hexadecimal, binary, and IPv6 mapped format instantly. All representations shown side by side in a single view.

IPv4 Range Expander

Convert an IPv4 address range (start-end) to the smallest CIDR block notation. Free online IPv4 range expander for network engineers and system administrators.

IPv6 ULA Generator

Generate random IPv6 Unique Local Addresses (ULA) using the IETF method with SHA1 hashing. Free online tool for network engineers.

MAC Address Lookup

Look up the manufacturer/vendor of any MAC address instantly. Free online MAC address vendor lookup tool.

Bandwidth Delay Product Calculator

Calculate bandwidth delay product (BDP) from link bandwidth and round-trip time to size TCP windows for long fat networks.

Baud Rate Calculator

Calculate baud rate from bit rate, ASK bandwidth, FSK bandwidth, or convert baud to frequency for serial communication.

Download Time Calculator

Estimate how long it takes to download a file based on file size and internet speed with decimal and binary unit support.

IP Address Converter

Convert IPv4 addresses between dotted decimal, decimal, hexadecimal, and binary formats.

Propagation Delay Calculator

Calculate electromagnetic signal propagation delay from cable length, velocity factor, and dielectric constant for RF and PCB traces.

Upload Time Calculator

Estimate file upload time from file size, upload speed, and connection overhead for planning cloud backups and transfers.

Uptime Calculator

Calculate uptime percentage, allowed downtime, and SLA metrics from uptime ratio or downtime duration over any period.

DKIM Record Generator

Generate a DKIM DNS TXT record and RSA key pair in your browser, with selector, domain, hashing algorithm, and copy-ready private key output.

DNS Propagation Checker

Check whether DNS changes have propagated by querying Cloudflare, Google, and DNS.SB resolvers side by side, with response times and a consistency verdict.

SPF Generator

Build validated SPF TXT records with IP, include, MX, and redirect mechanisms plus DNS lookup limit warnings.

Sort IP Address

Sort IPv4 and IPv6 addresses numerically with optional deduplication and invalid-line reporting.

DKIM Record Decoder

Parse DKIM TXT records to view version, key type, hash algorithms, flags, and the embedded RSA public key.

DMARC Record Builder

Compose DMARC DNS records with policy, alignment, reporting URIs, percentage, and subdomain options.

DMARC Report XML Parser

Read DMARC aggregate XML reports and summarize published policies, sources, and pass or fail counts.

DNS Zone File Validator

Check BIND-style zone files for SOA, NS, MX, CNAME, TTL, and common formatting mistakes.

MTA-STS Policy Checker

Check MTA-STS TXT records and mta-sts.txt policy files for RFC 8461 syntax, MX hosts, mode, and max_age.

TLS Cipher Suite Explainer

Break down IANA TLS cipher suite strings into key exchange, authentication, encryption, and MAC components.

TLS RPT Record Builder

Compose SMTP TLS Reporting (TLS-RPT) TXT records with ruas endpoints for mail security monitoring.

IPv6 Expand Compress

Expand IPv6 to full eight-group form or compress to RFC 5952 canonical shorthand in your browser.

IPv4 IPv6 Subnet Calculator

Calculate network, broadcast, host range, and usable addresses from CIDR notation for IPv4 and IPv6.

Hosts Per Subnet Calculator

Find usable host counts from IPv4 prefix length or subnet mask, including /31 and /32 edge cases.