ASN Converter
Convert quickly between ASPlain and ASDot notation.
TelcoAIO - Network Engineering Toolbox
TelcoAIO is a bilingual, browser-native toolbox for telecom operations, network engineering, ISP backbones, IDC teams, and day-to-day NOC workflows. It brings together practical utilities such as subnet calculation, VLSM planning, IP format conversion, DNS lookup, ASN conversion, BGP and RPKI checks, IP aggregation, batch PTR lookups, and maintenance notification generation.
Instead of acting like a generic calculator directory, the site focuses on operational tasks that usually send engineers across multiple tabs and reference sites. The goal is to keep related checks in one place so it is easier to validate a prefix, confirm routing context, sanity-check an MTU question, and turn the same maintenance window into a customer-ready notice without rebuilding the context each time.
Quick Tools
Fast Network Tools
IPv4 Subnet
Calculate network ID, mask, broadcast, and usable range.
CIDR / Mask / Wildcard
Convert between prefix length, subnet mask, and wildcard mask.
IP Geo / WHOIS Lite
Look up geolocation, RIR country, and origin ASN for an IP or prefix.
MTU Payload
Estimate payload after common encapsulation overhead.
Who This Is For
TelcoAIO is built for people who already work close to the network: telecom engineers, backbone and peering teams, cloud and IDC operators, support engineers, and anyone who needs fast browser-based tooling during planning or incident response. The emphasis is on reducing friction in real workflows rather than presenting glossy dashboards or marketing copy.
What Makes It Different
Several tools on the site solve problems that are often split between separate destinations: RIPE-backed IP and ASN context, RPKI and IRR checks, practical route-filter generation, maintenance notification drafting, and bilingual English / Simplified Chinese navigation. Calculators that can run locally stay in the browser, while lookup-style pages call public data sources directly so results remain transparent about where they come from.
Data Sources And Boundaries
External lookups rely on public services such as RIPEstat, the RIPE Database, Google Public DNS over HTTPS, and Cloudflare DNS over HTTPS. TelcoAIO is meant to speed up investigation and review, not replace vendor documentation, internal telemetry, or a production change process. If a result will influence a live network decision, it should still be verified against authoritative sources and your own monitoring.
Maintained By
TelcoAIO is maintained by Ray as a lightweight personal project built around common network operations tasks. The code lives in the public GitHub repository crusaderay/telcoaio. If you spot a bug, want a new workflow covered, or have a suggestion that would make the site more useful in real operations, the Contact page is the best place to reach out.