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AS19318 Interserver, Inc

IS-AS-1 - Interserver, Inc · registered in the United States

IPv4 addresses169,728136 prefixes · 0.005% of announced IPv4
Rank in United States#366largest network in US by IPv4 space, of 18,338 · 0.01% of US
Rank worldwide#1,210of 79,396 networks with IPv4
IPv6106 x /32 (7,008,275 x /48)56 prefixes
CountryUnited States18,679 ASNs registered there
Open AS19318 in ASN lookup Look up an IP in this network (31.57.96.1) All networks in United States

IPv4 prefixes

All 136 prefixes, in address order.

  • 31.57.96.0/24
  • 38.156.12.0/24
  • 50.20.202.0/23
  • 50.20.206.0/23
  • 50.114.179.0/24
  • 63.135.164.0/24
  • 64.20.32.0/19
  • 64.49.9.0/24
  • 64.204.112.0/24
  • 66.23.224.0/20
  • 66.45.224.0/19
  • 66.225.228.0/23
  • 66.248.192.0/24
  • 66.248.197.0/24
  • 67.211.209.0/24
  • 67.211.210.0/23
  • 67.211.212.0/22
  • 67.211.216.0/21
  • 67.217.48.0/20
  • 68.168.208.0/20
  • 69.10.32.0/20
  • 69.10.48.0/23
  • 69.10.51.0/24
  • 69.10.52.0/22
  • 69.10.56.0/21
  • 69.164.240.0/21
  • 69.169.96.0/21
  • 69.169.108.0/22
  • 74.50.64.0/19
  • 74.217.202.0/23
  • 82.22.19.0/24
  • 84.75.243.0/24
  • 85.239.151.0/24
  • 87.232.87.0/24
  • 89.106.1.0/24
  • 91.208.95.0/24
  • 92.119.157.0/24
  • 96.126.176.0/24
  • 103.197.16.0/22
  • 104.37.185.0/24
  • 104.37.186.0/23
  • 104.37.188.0/22
  • 104.218.48.0/21
  • 104.234.93.0/24
  • 107.148.158.0/24
  • 107.158.126.0/24
  • 107.181.114.0/24
  • 108.186.206.0/24
  • 108.186.221.0/24
  • 109.66.129.0/24
  • 130.250.190.0/24
  • 131.143.136.0/23
  • 131.143.138.0/24
  • 136.0.213.0/24
  • 142.252.45.0/24
  • 142.252.49.0/24
  • 142.252.116.0/24
  • 150.241.203.0/24
  • 153.75.224.0/22
  • 153.75.236.0/22
  • 153.75.240.0/20
  • 155.2.192.0/24
  • 157.250.192.0/23
  • 157.250.196.0/22
  • 157.250.204.0/23
  • 161.129.64.0/22
  • 161.129.68.0/22
  • 162.33.17.0/24
  • 162.33.21.0/24
  • 162.33.26.0/24
  • 162.33.30.0/23
  • 162.35.0.0/21
  • 162.35.24.0/21
  • 162.35.32.0/19
  • 162.35.96.0/22
  • 162.35.104.0/22
  • 162.35.112.0/20
  • 162.35.160.0/21
  • 162.35.172.0/22
  • 162.35.180.0/22
  • 162.35.184.0/22
  • 162.141.167.0/24
  • 162.216.112.0/22
  • 162.216.176.0/24
  • 162.220.161.0/24
  • 162.220.162.0/23
  • 162.220.164.0/22
  • 162.245.184.0/23
  • 162.245.186.0/23
  • 162.245.188.0/23
  • 162.245.190.0/24
  • 162.245.191.0/24
  • 162.246.16.0/21
  • 162.250.120.0/21
  • 163.245.200.0/21
  • 163.245.208.0/20
  • 167.148.41.0/24
  • 172.82.88.0/24
  • 173.214.162.0/23
  • 173.214.164.0/22
  • 173.214.168.0/21
  • 173.225.96.0/20
  • 173.240.148.0/23
  • 173.240.152.0/23
  • 173.240.158.0/23
  • 174.138.176.0/20
  • 184.174.80.0/24
  • 192.64.80.0/21
  • 192.195.185.0/24
  • 194.180.184.0/24
  • 198.96.88.0/23
  • 198.96.90.0/23
  • 198.96.92.0/22
  • 199.88.242.0/24
  • 199.231.184.0/21
  • 203.188.171.0/24
  • 204.13.232.0/21
  • 205.209.96.0/19
  • 206.72.194.0/23
  • 206.72.196.0/22
  • 206.72.200.0/21
  • 206.206.90.0/24
  • 208.73.202.0/23
  • 208.73.204.0/22
  • 209.159.144.0/20
  • 216.158.226.0/23
  • 216.158.228.0/22
  • 216.158.232.0/21
  • 216.219.80.0/21
  • 216.219.88.0/23
  • 216.219.91.0/24
  • 216.219.92.0/23
  • 216.219.94.0/24
  • 216.225.153.0/24
  • 216.225.154.0/23
  • 216.225.156.0/22

IPv6 prefixes

All 56 prefixes.

  • 2601:2018::/29
  • 2601:2020::/32
  • 2601:2021::/32
  • 2601:2022::/31
  • 2601:2024::/32
  • 2601:2025::/32
  • 2601:2026::/31
  • 2604:a00::/40
  • 2604:a00:100::/48
  • 2604:a00:102::/47
  • 2604:a00:104::/46
  • 2604:a00:108::/45
  • 2604:a00:110::/44
  • 2604:a00:120::/43
  • 2604:a00:140::/42
  • 2604:a00:180::/41
  • 2604:a00:200::/39
  • 2604:a00:400::/38
  • 2604:a00:800::/37
  • 2604:a00:1000::/37
  • 2604:a00:1800::/39
  • 2604:a00:1a00::/41
  • 2604:a00:1a80::/42
  • 2604:a00:1ac0::/48
  • 2604:a00:1ac2::/47
  • 2604:a00:1ac4::/46
  • 2604:a00:1ac8::/47
  • 2604:a00:1acb::/48
  • 2604:a00:1acc::/46
  • 2604:a00:1ad0::/44
  • 2604:a00:1ae0::/43
  • 2604:a00:1b00::/40
  • 2604:a00:1c00::/38
  • 2604:a00:3000::/36
  • 2604:a00:4000::/34
  • 2604:a00:8000::/33
  • 2a05:b900::/29
  • 2a0a:8180:c8c4::/48
  • 2a0a:8182:2a54::/48
  • 2a0a:8184:cc3c::/48
  • 2a0a:8186:85fa::/48
  • 2a0a:b382::/32
  • 2a0f:1207::/32
  • 2a0f:1440::/29
  • 2a0f:27c0::/29
  • 2a0f:39c0::/29
  • 2a0f:7f00::/29
  • 2a0f:9600::/29
  • 2a0f:e5c0::/29
  • 2a10:34c0::/29
  • 2a10:6d00::/29
  • 2a10:fa80:e::/48
  • 2a12:a800:11::/48
  • 2a13:2b40::/29
  • 2a13:9080::/29
  • 2a14:1ec7:f720::/44

Other ASNs named Interserver, Inc

1 other network uses the same organisation name; together with AS19318 they announce 196,352 IPv4 addresses.

ASNNameIPv4 addresses
AS26666INTERSERVER-LAX - Interserver, Inc US26,624

Similar-sized networks in United States

ASNNameIPv4 addresses
AS11796#363 AIRSTREAMCOMM-NET - Airstream Communications, LLC171,264
AS797#364 AMERITECH-AS - AT&T Services, Inc.170,752
AS2749#365 DNIC-AS-02749 - Navy Network Information Center (NNIC)169,984
AS36692#367 CISCO-UMBRELLA - Cisco OpenDNS, LLC169,728
AS14992#368 CRYSTALTECH - NewtekOne, Inc.168,704
AS26347#369 DREAMHOST-AS - New Dream Network, LLC168,192

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