IP Addressing

Look up ASN records online to identify holder, routed prefixes, neighbouring ASNs, and public registry or peering details for incident and routing triage.

Calculate online DHCP scope capacity from subnet, pool, exclusions, reservations, and growth so admins can spot lease pressure before users are blocked.

Check EDNS Client Subnet behavior online by comparing DNS answers, echoed scope, TTL drift, and resolver baselines for routing and cache debugging.

Plan IPv4 subnet allocations online from a parent CIDR block, size each segment by host demand, and export clear address plans for rollout worksheets.

Calculate IPv4 supernets online from CIDR or dotted-mask lists, compare cover routes with exact aggregates, and spot exposure before route changes.

Convert online IPv6 addresses between compressed, expanded, dotted-tail, hextet, binary, and reverse DNS views for cleaner reviews and documentation.

Calculate online IPv6 subnet ranges, canonical CIDR, reverse-DNS zones, special-address warnings, target prefixes, and EUI-64 samples for allocation planning.

Plan online IPv6 prefix allocations from a parent CIDR, compare site and LAN capacity, and flag /64 and nibble-boundary risks before routing changes.

Check IP geolocation online from a public IP, domain, or URL to inspect approximate location, ASN, timezone, reverse DNS, and map context for support triage.

Calculate IPv4 subnets online from CIDR or dotted masks, inspect host ranges, wildcard math, and VLSM split plans before allocating network space.

Calculate IPv4 subnet splits online from any address in a parent block, compare equal child CIDR options, and export rollout-ready subnet ledgers.

Plan online IPv4 subnet splits with visual ranges, host counts, and exportable tables for clearer VLAN, ACL, and handoff-ready allocation reviews.

Check IP address details online with current-route detection, ASN, timezone, source consensus, and PTR hostname clues for VPN checks or firewall allowlists.