Network Tools
Debug APIs, clean content, format data, and run release checks directly in your browser.
Tools for HTTP, DNS, IP, and protocol fields β locate network issues fast and dissect header fields.
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DNS Record Generator
Generate A, AAAA, CNAME, TXT and MX records
DNS & Domain
IPv6 Validator
Check IPv6 syntax, canonical addresses and scoped zone identifiers
IP & Routing
CIDR Range Converter
Convert IPv4 CIDRs and inclusive ranges with exact coverage
IP & Routing
IPv4 Integer Converter
Convert strict IPv4 addresses and unsigned 32-bit integers
IP & Routing
CIDR Subnet Splitter
Split IPv4 networks into equal blocks by prefix or count
IP & Routing
MAC Address Generator
Generate distinct MAC batches with explicit address bits
IP & Routing
DNS Zone Parser
Inspect a supported BIND zone text subset
IP & Routing
CIDR Merger
Collapse IPv4 CIDRs into the smallest exact address union
IP & Routing
IP Port Extractor
Extract and normalize IP endpoints in original log order
IP & Routing
MAC Address Validator and Formatter
Check exact MAC syntax, convert formats and inspect bits
IP & Routing
IP in CIDR Checker
Check IPv4/IPv6 membership with longest-prefix matches
IP & Routing
IPv6 Subnet Calculator
Calculate exact IPv6 ranges and preview indexed child subnets
IP & Routing
IPv6 Range to CIDR Converter
Convert inclusive IPv6 intervals to exact minimal CIDRs, or inspect a CIDR range
IP & Routing
IPv6 Reverse DNS Generator
Keep the IPv6 host intact while generating its PTR owner, zone and BIND fragment
IP & Routing
CIDR Exclude Calculator
Subtract contained IPv4 or IPv6 networks and inspect the exact minimal remainder
IP & Routing
Wildcard Mask Calculator
Invert a contiguous IPv4 subnet mask and compare Cisco ACL address matches
IP & Routing
MAC Vendor Lookup
Find registered MAC prefixes using a dated IEEE snapshot
IP & Routing
IP Address Anonymizer
Mask host bits while reviewing what remains in your log
IP Address Anonymization
DMARC Checker
Inspect direct DMARC, SPF and optional DKIM DNS records with partial checks
DNS & Domain
VLSM Subnet Calculator
Allocate IPv4 subnets from strict host requirements with exact capacity totals
IP & Routing