IP Address and Network Tools
Explore all 12 browser-accessible IP intelligence, RDAP registration, DNS-over-HTTPS, connectivity, and deterministic CIDR calculation utilities. Filter by protocol task below.
IP Address Lookup
Inspect country/region, ASN, provider, special-range scope, and data provenance for any IPv4 or IPv6 address.
ASN Lookup
Query IANA RDAP bootstrap and regional registries for Autonomous System Number registration records.
ISP Lookup
Identify the network operator, organization, ASN, and registry holder associated with an IP address.
IP WHOIS / RDAP Lookup
Resolve the authoritative RIR via RFC 9224 IANA bootstrap and inspect structured RDAP allocation records.
DNS Lookup
Query A, AAAA, MX, TXT, NS, CNAME, and SOA records over DNS-over-HTTPS with TTL and status inspection.
Reverse DNS Lookup
Derive the exact in-addr.arpa or ip6.arpa reverse pointer zone name and query PTR records.
IPv4 Checker
Inspect the visitor IPv4 address observed by the server, octet breakdown, and RFC 1918 / RFC 6598 CGNAT status.
IPv6 Checker
Inspect 128-bit IPv6 reachability, eight-hextet structure, compressed/expanded form, and Indian dual-stack context.
Subnet Calculator
Calculate network address, broadcast, usable host range, wildcard mask, and 32-bit binary mask for /0 to /32.
IP Range to CIDR Calculator
Convert any arbitrary IPv4 start–end boundary into minimal covering CIDR blocks for firewall rules and routing.
IP Address Validator & Classifier
Verify syntactic validity and inspect whether an IP is globally routable or reserved in an IANA special-purpose block.
IP Address Converter
Convert IPv4 and IPv6 addresses across canonical, expanded, decimal integer, hexadecimal, binary, and reverse ARPA forms.
Choosing the Right Networking Utility
Use IP Address Lookup or ISP Lookup when you want a combined overview of an address's country/region and network operator. When you need primary registry proof of netblock ownership or abuse contact roles, use IP WHOIS / RDAP Lookup or ASN Lookup, which query Regional Internet Registries via RFC 9224.
Deterministic Local Calculators vs. Live Protocol Queries
Our Subnet Calculator, IP Range to CIDR Calculator, IP Validator, and IP Format Converter perform 100% deterministic bitwise calculations without external API dependencies. Looking for conceptual explanations? Visit the Networking Learning Center.
Technical Specifications & Protocol Facts
Authoritative parameters, dimensions, and IETF RFC compliance
| Parameter / Dimension | Technical Specification | Standard / Authority |
|---|---|---|
| Canonical Document Scope | All IP Tools — Route /tools | IPAddressLookup.in Technical Reference |
| Supported Address Families | IPv4 (32-bit dotted-decimal) & IPv6 (128-bit hexadecimal) | RFC 791 / RFC 8200 / RFC 5952 |
| Authoritative Registration Protocol | Registration Data Access Protocol (RDAP) via IANA Bootstrap | RFC 7480–7484 / RFC 9224 |
| Special-Purpose Range Classification | Private LAN (RFC 1918), Shared CGNAT 100.64.0.0/10 (RFC 6598), ULA (RFC 4193) | RFC 6890 IANA Registry |
Frequently Asked Questions
Concise answers verified against IANA, APNIC, and IETF protocol standards
What is the primary purpose of All IP Tools?
Browse and filter all 12 interactive IP intelligence, DNS, connectivity, and subnet calculation tools. Every output on IPAddressLookup.in follows IETF RFC standards and cites primary RIR/IANA sources.
Are IP and network queries on this page logged or shared with advertisers?
No. IPAddressLookup.in operates on a strict data-minimization model with stateless query execution, short-lived caching (15 minutes max for upstream RDAP/DNS), and zero persistent user lookup history.
How often is the technical documentation on IPAddressLookup.in reviewed?
All protocol calculators, RFC citations, and Indian telecom notes are verified by the 2026-11-01 editorial and engineering review cycle.
Related Network Tools & Technical Guides
Contextual utilities and reference documentation verified for this workflow
Diagnostic & Calculation Utilities
- IP Address Lookup
Inspect country/region, ASN, provider, special-range scope, and data provenance for any IPv4 or IPv6 address.
- ASN Lookup
Query IANA RDAP bootstrap and regional registries for Autonomous System Number registration records.
- ISP Lookup
Identify the network operator, organization, ASN, and registry holder associated with an IP address.
- IP WHOIS / RDAP Lookup
Resolve the authoritative RIR via RFC 9224 IANA bootstrap and inspect structured RDAP allocation records.
- DNS Lookup
Query A, AAAA, MX, TXT, NS, CNAME, and SOA records over DNS-over-HTTPS with TTL and status inspection.
- Reverse DNS Lookup
Derive the exact in-addr.arpa or ip6.arpa reverse pointer zone name and query PTR records.
- IPv4 Checker
Inspect the visitor IPv4 address observed by the server, octet breakdown, and RFC 1918 / RFC 6598 CGNAT status.
- IPv6 Checker
Inspect 128-bit IPv6 reachability, eight-hextet structure, compressed/expanded form, and Indian dual-stack context.
- Subnet Calculator
Calculate network address, broadcast, usable host range, wildcard mask, and 32-bit binary mask for /0 to /32.
- IP Range to CIDR Calculator
Convert any arbitrary IPv4 start–end boundary into minimal covering CIDR blocks for firewall rules and routing.
- IP Address Validator & Classifier
Verify syntactic validity and inspect whether an IP is globally routable or reserved in an IANA special-purpose block.
- IP Address Converter
Convert IPv4 and IPv6 addresses across canonical, expanded, decimal integer, hexadecimal, binary, and reverse ARPA forms.
IP Tools · Canonical: https://ipaddresslookup.in/tools · Reviewed: 2026-11-01
Reviewer: IPAddressLookup.in Technical Network Utility Group · Stateless Privacy · Accuracy & Data Limits