Network
AS21547 FirstLight Networks, LLC
- Autonomous system number
- AS21547
- Registered in
- US
- Registry
- ARIN
- ASN registered
- 2001-05-21
- IPv4 prefixes announced
- 55
- IPv6 prefixes announced
- 5
- Internet exchanges
- 0
- Data centres
- 0
- Internet users (estimate)
- ~19,876
Prefix counts from the global routing table as of 2026-10-11. Not counted: 1 more prefixes this network originates that few routers see, inside address space AS174 announces widely. Exchange and data-centre counts are what the network lists in PeeringDB. User estimate by APNIC Labs, 2026-10-06. Website: firstlight.net
Upstreams and peers, traceroute paths through it, where it hands off to its transit providers, routing history and alerts - free with an account, and queryable from Claude, ChatGPT and other AI agents through the BGPScout MCP server.
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