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AS12129 123.Net, Inc.

123NET - 123.Net, Inc. · registered in the United States

IPv4 addresses162,81694 prefixes · 0.005% of announced IPv4
Rank in United States#381largest network in US by IPv4 space, of 18,338 · 0.01% of US
Rank worldwide#1,248of 79,396 networks with IPv4
IPv61 x /32 (65,538 x /48)7 prefixes
CountryUnited States18,679 ASNs registered there
Open AS12129 in ASN lookup Look up an IP in this network (65.183.160.1) All networks in United States

IPv4 prefixes

All 94 prefixes, in address order.

  • 65.183.160.0/21
  • 65.183.168.0/22
  • 65.183.173.0/24
  • 65.183.174.0/23
  • 65.183.176.0/20
  • 66.51.144.0/22
  • 66.51.149.0/24
  • 66.51.150.0/24
  • 66.51.152.0/21
  • 66.103.224.0/20
  • 66.103.240.0/22
  • 66.103.245.0/24
  • 66.103.246.0/23
  • 66.103.248.0/21
  • 67.214.112.0/22
  • 67.214.116.0/23
  • 67.214.118.0/24
  • 67.214.120.0/21
  • 69.39.64.0/19
  • 69.54.68.0/23
  • 74.126.0.0/21
  • 74.126.8.0/22
  • 74.126.12.0/24
  • 74.126.13.0/24
  • 74.126.14.0/23
  • 74.126.17.0/24
  • 74.126.18.0/23
  • 74.126.20.0/22
  • 74.126.24.0/21
  • 130.44.28.0/22
  • 130.51.212.0/22
  • 149.19.205.0/24
  • 152.160.0.0/18
  • 152.160.64.0/20
  • 152.160.80.0/23
  • 152.160.82.0/24
  • 152.160.84.0/22
  • 152.160.88.0/21
  • 152.160.96.0/21
  • 152.160.104.0/22
  • 152.160.108.0/23
  • 152.160.110.0/24
  • 152.160.111.0/24
  • 152.160.112.0/20
  • 152.160.128.0/20
  • 152.160.144.0/24
  • 152.160.146.0/23
  • 152.160.148.0/22
  • 152.160.152.0/21
  • 152.160.160.0/20
  • 152.160.176.0/22
  • 152.160.181.0/24
  • 152.160.182.0/23
  • 152.160.184.0/21
  • 192.96.208.0/20
  • 192.149.240.0/24
  • 192.153.192.0/24
  • 192.159.68.0/23
  • 198.3.44.0/22
  • 198.153.129.0/24
  • 199.33.234.0/23
  • 199.167.252.0/22
  • 199.231.52.0/22
  • 199.249.0.0/21
  • 204.106.17.0/24
  • 204.232.80.0/20
  • 205.251.176.0/20
  • 207.91.193.0/24
  • 207.91.194.0/23
  • 207.91.196.0/22
  • 207.91.200.0/22
  • 207.91.204.0/22
  • 207.91.208.0/20
  • 207.91.224.0/20
  • 207.91.240.0/20
  • 208.86.112.0/24
  • 209.103.128.0/20
  • 209.124.32.0/22
  • 209.124.36.0/23
  • 209.124.38.0/24
  • 209.124.40.0/21
  • 209.124.48.0/22
  • 209.124.52.0/23
  • 209.124.54.0/23
  • 209.124.56.0/22
  • 209.124.60.0/22
  • 209.131.0.0/19
  • 216.109.192.0/20
  • 216.150.224.0/20
  • 216.234.96.0/20
  • 216.234.112.0/23
  • 216.234.114.0/24
  • 216.234.116.0/22
  • 216.234.120.0/21

IPv6 prefixes

All 7 prefixes.

  • 2607:f790::/33
  • 2607:f790:8000::/34
  • 2607:f790:c000::/35
  • 2607:f790:e000::/36
  • 2607:f790:f000::/36
  • 2620:84:c000::/48
  • 2620:11f:7008::/48

Similar-sized networks in United States

ASNNameIPv4 addresses
AS3851#378 NSHE-NEVADANET - Nevada System of Higher Education163,840
AS12#379 NYU-DOMAIN - New York University163,072
AS801#380 AMAZON-LEO - Amazon Technologies Inc.163,072
AS22742#382 CT-EDU-NET - Connecticut Education Network162,816
AS13693#383 NTS-ONLINE - Vexus Fiber161,536
AS7782#384 ALSK-7782 - Alaska Communications Systems Group, Inc.160,768

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources