Browser-native telecom toolkit

telco@aio:~ TelcoAIO Network Engineering Toolbox

Minimal, high-signal utilities for subnet planning, DNS checks, route visibility, and maintenance workflows.

Detecting public IP...

Batch PTR Reverse DNS Lookup

Enter up to 50 IPv4 or IPv6 addresses (one per line) to retrieve their PTR (reverse DNS) records. Queries are sent in parallel to Google DoH and Cloudflare DoH for fast, reliable results.

Batch PTR Lookup

Bulk reverse-DNS resolution for IP ranges and lists.

Category
lookup
Tags
dns, ptr, reverse

Inputs

  • A list of IPv4 addresses, one per line
  • Or an IPv4 CIDR or hyphenated range

Outputs

  • PTR record per address (or 'no PTR')
  • Aggregated table you can copy or export

Use Cases

  • Mapping unknown traffic sources to hostnames
  • Inventorying a /24 before migration
  • Spot-checking PTR coverage on an IP block you operate

Data Sources

  • Public DoH resolvers

Limitations

  • Reverse zones with no PTR records simply return empty
  • Very large ranges are throttled to protect upstream resolvers