AS6461 Zayo Bandwidth

United States ZAYO-6461 ARIN 214 IPv4 prefixes 13 IPv6 prefixes
IPv4 addresses
1,751,552
IPv6 /48 networks
266,246
RPKI
127 valid4 invalid96 no ROA
Peers and downstreams
1942

Holder

AS name
ZAYO-6461
Description
Zayo Bandwidth
Organisation
Zayo Bandwidth
Abuse contact
Not published
Assigned
1996-04-21
Registered
1996-04-22
Record last changed
2016-06-21 19:05 UTC
103.139.130.0/23104.145.0.0/20104.224.2.0/24104.251.96.0/20104.36.8.0/21107.178.32.0/20128.177.0.0/16129.192.170.0/24129.192.171.0/24129.192.189.0/24129.35.162.0/24141.193.226.0/24142.194.0.0/16144.83.0.0/16149.64.226.0/24150.169.12.0/24159.18.0.0/16159.246.52.0/24162.223.112.0/22162.223.4.0/22162.245.96.0/22162.249.88.0/21162.251.150.0/24162.253.136.0/21164.90.20.0/24167.217.0.0/16168.102.128.0/20168.254.5.0/24170.81.198.0/24172.110.64.0/20173.241.208.0/20173.46.64.0/20176.46.143.0/24176.46.146.0/24184.94.0.0/17192.124.45.0/24192.132.44.0/24192.197.156.0/24192.255.94.0/24192.40.232.0/21192.64.252.0/24192.75.172.0/24193.160.88.0/22193.28.104.0/23193.28.62.0/23193.34.72.0/23193.34.74.0/23198.100.128.0/21198.136.150.0/24198.60.184.0/22198.90.96.0/22199.119.160.0/22199.16.106.0/24199.164.64.0/18199.164.68.0/24199.199.36.0/24199.212.160.0/19199.43.120.0/24199.5.171.0/24199.85.120.0/22199.87.52.0/22199.96.32.0/22199.96.40.0/22200.123.205.0/24200.123.207.0/24204.128.64.0/19204.128.96.0/19204.128.96.0/24204.14.211.0/24204.19.20.0/23204.9.72.0/21205.159.43.0/24206.165.102.0/24206.191.64.0/18206.222.64.0/19206.254.231.0/24207.11.241.0/24207.126.96.0/19207.181.64.0/18207.190.143.0/24207.230.224.0/19207.235.128.0/17207.235.133.0/24207.235.136.0/24207.235.146.0/24207.235.148.0/24207.235.149.0/24207.235.150.0/24207.235.151.0/24207.235.152.0/24207.235.153.0/24207.235.154.0/24207.235.155.0/24207.235.157.0/24207.235.158.0/24207.235.160.0/24207.235.161.0/24207.235.255.0/24207.245.0.0/18207.245.192.0/18208.184.0.0/15208.187.29.0/24208.39.192.0/18208.67.192.0/21208.67.56.0/22208.70.197.0/24208.83.248.0/21208.91.200.0/22209.105.164.0/24209.112.0.0/18209.133.0.0/17209.146.128.0/17209.152.0.0/20209.152.16.0/20209.153.192.0/18209.183.176.0/20209.221.32.0/19209.249.0.0/16209.66.64.0/18209.82.0.0/17209.82.160.0/19209.90.52.0/24209.90.58.0/24212.32.48.0/24212.32.50.0/24213.152.224.0/19213.161.64.0/19216.119.0.0/18216.123.0.0/17216.123.128.0/18216.129.0.0/18216.129.64.0/19216.13.0.0/16216.157.192.0/19216.191.0.0/16216.200.0.0/17216.200.128.0/19216.200.160.0/20216.200.176.0/21216.200.184.0/22216.200.188.0/22216.200.192.0/18216.222.0.0/17216.227.120.0/24216.227.5.0/24216.23.128.0/19216.235.128.0/19216.248.208.0/2023.139.176.0/2431.99.0.0/1845.33.128.0/2050.115.24.0/2463.208.55.0/2463.249.63.0/2464.124.0.0/1764.124.128.0/1964.124.160.0/2064.124.176.0/2164.124.184.0/2264.124.188.0/2364.124.190.0/2364.124.192.0/1864.125.0.0/1664.125.74.0/2464.56.211.0/2466.213.128.0/1966.46.0.0/1666.62.132.0/2466.62.161.0/2466.62.182.0/2366.62.230.0/2466.62.238.0/2466.62.239.0/2466.62.240.0/2266.62.244.0/2367.136.93.0/2467.208.224.0/1967.213.160.0/2067.230.192.0/1968.170.192.0/2069.147.0.0/2069.147.2.0/2469.147.4.0/2469.147.44.0/2269.147.52.0/2269.147.55.0/2469.166.105.0/2469.195.0.0/2070.98.210.0/2471.19.160.0/1972.10.64.0/1972.20.192.0/1872.5.65.0/2474.114.161.0/2474.114.162.0/2474.114.163.0/2474.114.164.0/2274.212.179.0/2474.213.234.0/2474.213.235.0/2474.216.0.0/1674.80.190.0/2476.78.123.0/2479.141.32.0/2079.183.247.0/2482.98.192.0/2182.98.232.0/2182.98.240.0/2091.197.231.0/2491.208.131.0/2494.31.0.0/1895.164.96.0/2097.107.64.0/2497.107.65.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade C · 64/100
partly Prefixes covered by valid ROAs
127 of 227 announced prefixes are RPKI valid, 96 have no ROA.
14/25
fail No RPKI invalid announcements
4 announced prefixes are RPKI invalid and dropped by networks that validate.
0/10
pass Announces IPv6
13 IPv6 prefixes.
15/15
pass More than one upstream
58 upstreams seen in BGP.
10/10
pass Working abuse contact
abuse@zayo.com is published.
15/15
fail Publishes a geofeed
No geofeed found. Without one, location databases have to guess.
0/10
pass No prefixes smaller than /24 or /48
All prefixes are /24 (IPv4) or /48 (IPv6) or larger.
10/10
fail Registry record maintained
Last changed 2016-06-21.
0/5

Routing changes

Last 30 days
2026-10-06 05:39 UTCNeighbour gone AS32952 peer
2026-10-06 05:39 UTCNeighbour gone AS30257 peer
2026-10-06 05:39 UTCNeighbour gone AS9583 peer
2026-10-06 05:39 UTCNew neighbour AS7821 downstream

WHOIS

aut-num:        AS6461
as-name:        ZAYO-6461
handle:         AS6461
registrant:     ZAYOB (Zayo Bandwidth)
technical,administrative,noc:ZIE-ARIN (Zayo IP Engineering) <ipeng@zayo.com>
abuse:          ABUSE5675-ARIN (Abuse) <abuse@zayo.com>
last changed:   2016-06-21T15:05:54-04:00
registration:   1996-04-22T00:00:00-04:00
source:         ARIN (RDAP)