$ query “AS21547” --type=asn → 1 result(s)

AS21547 · FLASN-21547

FirstLight Networks LLC

AS21547 is owned by FirstLight Networks LLC and is a residential access provider, registered in the United States since 2001. The system announces a respectable 84 736 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to the United States, with additional presence in Australia.

Basic Information

Country
🇺🇸 United States
Category
Internet Service Provider
Network Role
Access Provider
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
May 21, 2001
Last Changed
April 24, 2026
Last Seen
April 30, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
68 / 25
IPv6 Prefixes (raw / aggregated)
5 / 2
IPv4 Addresses
84 736
Largest IPv4 Prefix
/18 (16 384 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇺🇸 United States (104 192 IPs), 🇦🇺 Australia (1 024 IPs)
Prefix Changed
March 04, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
1 upstream providing transit
Downstream Customers
4 downstreams buying transit
Degree
5 unique BGP neighbors
Reach
4 networks in customer cone

Upstream Providers (1)

Prefix Lists

IPv4 Prefixes (68 total)

  • 64.140.192.0/18 (16 384 addresses (/18 prefix))
  • 72.12.64.0/19 (8 192 addresses (/19 prefix))
  • 66.186.160.0/19 (8 192 addresses (/19 prefix))
  • 66.231.192.0/19 (8 192 addresses (/19 prefix))
  • 69.49.128.0/19 (8 192 addresses (/19 prefix))
  • 72.55.224.0/19 (8 192 addresses (/19 prefix))
  • 69.168.0.0/20 (4 096 addresses (/20 prefix))
  • 74.220.224.0/20 (4 096 addresses (/20 prefix))
  • 204.97.232.0/21 (2 048 addresses (/21 prefix))
  • 208.31.8.0/21 (2 048 addresses (/21 prefix))
  • 208.3.240.0/21 (2 048 addresses (/21 prefix))
  • 208.0.176.0/21 (2 048 addresses (/21 prefix))
  • 63.127.192.0/21 (2 048 addresses (/21 prefix))
  • 204.97.16.0/21 (2 048 addresses (/21 prefix))
  • 206.106.132.0/22 (1 024 addresses (/22 prefix))
  • 205.247.20.0/22 (1 024 addresses (/22 prefix))
  • 205.247.112.0/22 (1 024 addresses (/22 prefix))
  • 208.28.192.0/22 (1 024 addresses (/22 prefix))
  • 204.249.238.0/23 (512 addresses (/23 prefix))
  • 198.212.226.0/23 (512 addresses (/23 prefix))
  • 208.17.26.0/23 (512 addresses (/23 prefix))
  • 208.28.182.0/23 (512 addresses (/23 prefix))
  • 198.212.230.0/24 (256 addresses (/24 prefix))
  • 198.212.225.0/24 (256 addresses (/24 prefix))
  • 140.165.50.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (5 total)

  • 2001:4940::/32
  • 2604:3f00::/32