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AS numbers

AS2386 AT&T Data Communications Services

AS2386 is operated by AT&T Data Communications Services and registered with ARIN (US) since 1993-02-03.

It announces 389 IPv4 and 1 IPv6 prefixes, 50% of them RPKI valid.

RIPE RIS sees 8 upstream and peer networks and 13 downstream networks next to it.

PeeringDB lists it with no exchanges or facilities. Its peering policy is open.

Run the full network report BGP lookup WHOIS PeeringDB lookup
NameAT&T Data Communications Services
Registry handleINS-AS
Registry (RIR)ARIN
CountryUnited States (US)
Delegated on1993-02-03
Network typeNot Disclosed
Peering policyOpen
Prefixes (IPv4 / IPv6)389 / 1
RPKI valid50% (197 / 390)
Upstreams and peers8
Downstream networks13
Websiteqsun.att.com

Routing health

  • AS2386 announces 389 IPv4 and 1 IPv6 prefixes.
  • 4 of 390 announced prefixes are RPKI invalid: 12.43.88.0/24, 12.43.89.0/24, 12.43.90.0/24, 12.43.91.0/24.
  • 197 of 390 announced prefixes are RPKI valid.
  • 189 announced prefixes are not covered by a ROA of AS2386 (they may have none, or another network’s).
  • 8 upstreams and peers, 13 downstream networks seen.

For every check with the fix (IRR route objects, the RPKI state of each route, reverse DNS and the registration), run the full network report.

Announced prefixes 390

  • 12.0.224.0/24
  • 12.0.225.0/24
  • 12.0.226.0/24
  • 12.0.227.0/24
  • 12.0.228.0/24
  • 12.0.229.0/24
  • 12.0.230.0/24
  • 12.0.231.0/24
  • 12.3.167.0/24
  • 12.4.26.0/24
  • 12.4.27.0/24
  • 12.6.136.0/24
  • 12.8.110.0/24
  • 12.13.10.0/24
  • 12.13.233.0/24
  • 12.14.147.0/24
  • 12.17.245.0/24
  • 12.18.20.0/24
  • 12.20.178.0/24
  • 12.22.96.0/22
  • 12.27.251.0/24
  • 12.28.131.0/24
  • 12.29.167.0/24
  • 12.29.196.0/24
  • 12.29.197.0/24
  • 12.30.10.0/23
  • 12.30.249.0/24
  • 12.31.223.0/24
  • 12.32.224.0/22
  • 12.35.54.0/24
  • 12.37.13.0/24
  • 12.37.100.0/23
  • 12.37.132.0/24
  • 12.37.152.0/24
  • 12.39.169.0/24
  • 12.40.117.0/24
  • 12.42.184.0/24
  • 12.43.10.0/23
  • 12.43.88.0/22
  • 12.43.88.0/24
  • 12.43.89.0/24
  • 12.43.90.0/24
  • 12.43.91.0/24
  • 12.44.118.0/24
  • 12.47.66.0/24
  • 12.47.84.0/24
  • 12.48.163.0/24
  • 12.48.206.0/24
  • 12.53.15.0/24
  • 12.54.143.0/24
  • 12.71.82.0/24
  • 12.96.136.0/24
  • 12.104.218.0/24
  • 12.104.223.0/24
  • 12.105.142.0/24
  • 12.106.188.0/24
  • 12.106.240.0/24
  • 12.108.48.0/24
  • 12.108.69.0/24
  • 12.108.158.0/23
  • 12.108.158.0/24
  • 12.108.159.0/24
  • 12.108.255.0/24
  • 12.129.26.0/24
  • 12.129.89.0/24
  • 12.129.227.0/24
  • 12.131.121.0/24
  • 12.131.215.0/24
  • 12.133.88.0/24
  • 12.138.71.0/24
  • 12.138.110.0/24
  • 12.138.193.0/24
  • 12.139.114.0/23
  • 12.139.118.0/24
  • 12.139.123.0/24
  • 12.139.164.0/24
  • 12.144.222.0/24
  • 12.147.178.0/24
  • 12.148.63.0/24
  • 12.148.112.0/24
  • 12.148.167.0/24
  • 12.148.190.0/24
  • 12.150.102.0/23
  • 12.150.107.0/24
  • 12.151.240.0/24
  • 12.152.24.0/23
  • 12.166.243.0/24
  • 12.167.90.0/23
  • 12.167.90.0/24
  • 12.167.91.0/24
  • 12.168.16.0/24
  • 12.168.17.0/24
  • 12.169.17.0/24
  • 12.171.92.0/23
  • 12.171.108.0/24
  • 12.171.214.0/24
  • 12.173.41.0/24
  • 12.177.2.0/24
  • 12.177.3.0/24
  • 12.177.52.0/24

Showing the first 100.

RPKI problems

  • Invalid 12.43.88.0/24
  • Invalid 12.43.89.0/24
  • Invalid 12.43.90.0/24
  • Invalid 12.43.91.0/24

Upstreams and peers 8

The networks RIPE RIS sees next to AS2386 in BGP paths, the most visible first.

Peering

Peering policy: Open. Suggested max-prefix limits: 0 IPv4, 0 IPv6. PeeringDB record

More about AS2386

Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-15 09:13 UTC. The country is where the AS number was registered, not necessarily where the network operates.