$ query “AS6461” --type=asn → 1 result(s)

AS6461 · ZAYO-6461

Zayo Bandwidth

AS6461 belongs to Zayo Bandwidth and is a Tier-1 transit provider, registered in the United States since 1996. The system announces an impressive 1.8 million IPv4 addresses, including a /15, and supports IPv6. Most of its address space is geolocated to the United States, with additional presence in the United Kingdom and Canada, and smaller footprints in 21 additional countries. This AS has recently updated its prefix announcements.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #8 by Reach — Top 100 by customer cone size
  • #28 by Degree — Top 100 by unique BGP neighbor count
  • #7 in United States — Top 10 by reach within country
  • Pioneer — Registered before the year 2000

Basic Information

Country
🇺🇸 United States
Category
Internet Service Provider
Network Role
Tier-1 Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
April 22, 1996
Last Changed
October 01, 2026
Last Seen
October 10, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
225 / 174
IPv6 Prefixes (raw / aggregated)
14 / 12
IPv4 Addresses
1 755 392
Largest IPv4 Prefix
/15 (131 072 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇺🇸 United States (1 658 912 IPs), 🇬🇧 United Kingdom (49 808 IPs), 🇨🇦 Canada (29 328 IPs) and 21 more
Prefix Changed
October 11, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Peers
442 networks exchanging traffic without transit
Downstream Customers
2 429 downstreams buying transit
Unclassified
60 unclassified BGP neighbors
Degree
2 931 unique BGP neighbors
Reach
21 066 networks in customer cone

Prefix Lists

IPv4 Prefixes (225 total)

  • 64.124.0.0/15 (131 072 addresses (/15 prefix))
  • 208.184.0.0/15 (131 072 addresses (/15 prefix))
  • 66.46.0.0/16 (65 536 addresses (/16 prefix))
  • 74.216.0.0/16 (65 536 addresses (/16 prefix))
  • 128.177.0.0/16 (65 536 addresses (/16 prefix))
  • 142.194.0.0/16 (65 536 addresses (/16 prefix))
  • 144.83.0.0/16 (65 536 addresses (/16 prefix))
  • 159.18.0.0/16 (65 536 addresses (/16 prefix))
  • 167.217.0.0/16 (65 536 addresses (/16 prefix))
  • 209.249.0.0/16 (65 536 addresses (/16 prefix))
  • 216.13.0.0/16 (65 536 addresses (/16 prefix))
  • 216.191.0.0/16 (65 536 addresses (/16 prefix))
  • 216.200.0.0/16 (65 536 addresses (/16 prefix))
  • 184.94.0.0/17 (32 768 addresses (/17 prefix))
  • 207.235.128.0/17 (32 768 addresses (/17 prefix))
  • 209.82.0.0/17 (32 768 addresses (/17 prefix))
  • 209.133.0.0/17 (32 768 addresses (/17 prefix))
  • 209.146.128.0/17 (32 768 addresses (/17 prefix))
  • 216.123.0.0/17 (32 768 addresses (/17 prefix))
  • 216.222.0.0/17 (32 768 addresses (/17 prefix))
  • 31.99.0.0/18 (16 384 addresses (/18 prefix))
  • 72.20.192.0/18 (16 384 addresses (/18 prefix))
  • 94.31.0.0/18 (16 384 addresses (/18 prefix))
  • 199.164.64.0/18 (16 384 addresses (/18 prefix))
  • 204.128.64.0/18 (16 384 addresses (/18 prefix))
  • 206.191.64.0/18 (16 384 addresses (/18 prefix))
  • 207.181.64.0/18 (16 384 addresses (/18 prefix))
  • 207.245.0.0/18 (16 384 addresses (/18 prefix))
  • 207.245.192.0/18 (16 384 addresses (/18 prefix))
  • 208.39.192.0/18 (16 384 addresses (/18 prefix))
  • 209.66.64.0/18 (16 384 addresses (/18 prefix))
  • 209.112.0.0/18 (16 384 addresses (/18 prefix))
  • 209.153.192.0/18 (16 384 addresses (/18 prefix))
  • 216.119.0.0/18 (16 384 addresses (/18 prefix))
  • 216.123.128.0/18 (16 384 addresses (/18 prefix))
  • 216.129.0.0/18 (16 384 addresses (/18 prefix))
  • 66.213.128.0/19 (8 192 addresses (/19 prefix))
  • 67.208.224.0/19 (8 192 addresses (/19 prefix))
  • 67.230.192.0/19 (8 192 addresses (/19 prefix))
  • 71.19.160.0/19 (8 192 addresses (/19 prefix))
  • 72.10.64.0/19 (8 192 addresses (/19 prefix))
  • 199.212.160.0/19 (8 192 addresses (/19 prefix))
  • 206.222.64.0/19 (8 192 addresses (/19 prefix))
  • 207.126.96.0/19 (8 192 addresses (/19 prefix))
  • 207.230.224.0/19 (8 192 addresses (/19 prefix))
  • 209.82.160.0/19 (8 192 addresses (/19 prefix))
  • 209.152.0.0/19 (8 192 addresses (/19 prefix))
  • 209.221.32.0/19 (8 192 addresses (/19 prefix))
  • 213.152.224.0/19 (8 192 addresses (/19 prefix))
  • 213.161.64.0/19 (8 192 addresses (/19 prefix))

IPv6 Prefixes (14 total)

  • 2001:438::/32
  • 2001:4c8::/32
  • 2604:e500::/32
  • 2606:8180::/32
  • 2a00:16f8::/32
  • 2602:fdbe::/36
  • 2001:df0:7c80::/48
  • 2001:1b70:b3::/48
  • 2602:807:400c::/48
  • 2604:b040:b::/48
  • 2607:c200:1106::/48
  • 2800:870:1002::/48