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

AS6461 · ZAYO-6461

Zayo Bandwidth

AS6461 is run by 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. The bulk of its IP address space is in the United States, with additional presence in the United Kingdom and Canada, and smaller footprints in 21 additional countries. This AS's prefix announcements have been recently modified.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #10 by Reach — Top 100 by customer cone size
  • #25 by Degree — Top 100 by unique BGP neighbor count
  • #8 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
March 04, 2026
Last Seen
April 14, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
229 / 184
IPv6 Prefixes (raw / aggregated)
16 / 13
IPv4 Addresses
1 760 000
Largest IPv4 Prefix
/15 (131 072 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇺🇸 United States (2 516 272 IPs), 🇬🇧 United Kingdom (109 136 IPs), 🇨🇦 Canada (24 480 IPs) and 21 more
Prefix Changed
April 13, 2026

Reputation

Reputation
Good — 6 flagged IPs out of 1 760 000 total (0.00%)

Connectivity Summary

Peers
455 networks exchanging traffic without transit
Downstream Customers
2 384 downstreams buying transit
Unclassified
100 unclassified BGP neighbors
Degree
2 939 unique BGP neighbors
Reach
55 631 networks in customer cone

Prefix Lists

IPv4 Prefixes (229 total)

  • 64.124.0.0/15 (131 072 addresses (/15 prefix))
  • 208.184.0.0/15 (131 072 addresses (/15 prefix))
  • 144.83.0.0/16 (65 536 addresses (/16 prefix))
  • 128.177.0.0/16 (65 536 addresses (/16 prefix))
  • 216.13.0.0/16 (65 536 addresses (/16 prefix))
  • 167.217.0.0/16 (65 536 addresses (/16 prefix))
  • 216.200.0.0/16 (65 536 addresses (/16 prefix))
  • 66.46.0.0/16 (65 536 addresses (/16 prefix))
  • 216.191.0.0/16 (65 536 addresses (/16 prefix))
  • 142.194.0.0/16 (65 536 addresses (/16 prefix))
  • 159.18.0.0/16 (65 536 addresses (/16 prefix))
  • 209.249.0.0/16 (65 536 addresses (/16 prefix))
  • 74.216.0.0/16 (65 536 addresses (/16 prefix))
  • 216.123.0.0/17 (32 768 addresses (/17 prefix))
  • 209.82.0.0/17 (32 768 addresses (/17 prefix))
  • 207.235.128.0/17 (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))
  • 184.94.0.0/17 (32 768 addresses (/17 prefix))
  • 216.222.0.0/17 (32 768 addresses (/17 prefix))
  • 216.129.0.0/18 (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))
  • 94.31.0.0/18 (16 384 addresses (/18 prefix))
  • 206.191.64.0/18 (16 384 addresses (/18 prefix))
  • 208.39.192.0/18 (16 384 addresses (/18 prefix))
  • 31.99.0.0/18 (16 384 addresses (/18 prefix))
  • 209.66.64.0/18 (16 384 addresses (/18 prefix))
  • 216.119.0.0/18 (16 384 addresses (/18 prefix))
  • 209.153.192.0/18 (16 384 addresses (/18 prefix))
  • 216.123.128.0/18 (16 384 addresses (/18 prefix))
  • 72.20.192.0/18 (16 384 addresses (/18 prefix))
  • 209.112.0.0/18 (16 384 addresses (/18 prefix))
  • 199.164.64.0/18 (16 384 addresses (/18 prefix))
  • 213.161.64.0/19 (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))
  • 72.10.64.0/19 (8 192 addresses (/19 prefix))
  • 71.19.160.0/19 (8 192 addresses (/19 prefix))
  • 216.235.128.0/19 (8 192 addresses (/19 prefix))
  • 216.157.192.0/19 (8 192 addresses (/19 prefix))
  • 199.212.160.0/19 (8 192 addresses (/19 prefix))
  • 216.129.64.0/19 (8 192 addresses (/19 prefix))
  • 204.128.64.0/19 (8 192 addresses (/19 prefix))
  • 66.213.128.0/19 (8 192 addresses (/19 prefix))
  • 216.23.128.0/19 (8 192 addresses (/19 prefix))
  • 67.208.224.0/19 (8 192 addresses (/19 prefix))
  • 209.221.32.0/19 (8 192 addresses (/19 prefix))
  • 206.222.64.0/19 (8 192 addresses (/19 prefix))
  • and 134 more

IPv6 Prefixes (16 total)

  • 2a0b:7ec0::/29
  • 2604:e500::/32
  • 2001:4c8::/32
  • 2a00:16f8::/32
  • 2001:438::/32
  • 2606:da80::/36
  • 2602:fdbe::/36
  • 2604:b040:b::/48
  • 2602:807:400c::/48
  • 2607:c200:1106::/48
  • 2800:870:1002::/48
  • 2001:1b70:b3::/48
  • 2001:df0:7c80::/48