AS72 Schlumberger Limited

SCHLUMBERGER-AS - Schlumberger Limited · registered in the United States

IPv4 addresses1,152,512171 prefixes · 0.037% of announced IPv4

Rank in United States#90largest network in US by IPv4 space, of 18,338 · 0.08% of US

Rank worldwide#319of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS72 in ASN lookup Look up an IP in this network (128.58.0.1) All networks in United States

IPv4 prefixes

All 171 prefixes, in address order.

128.58.0.0/16
129.87.0.0/16
134.32.0.0/16
136.249.0.0/16
136.250.0.0/15
136.252.0.0/15
136.254.0.0/16
137.144.0.0/16
163.183.0.0/16
163.184.0.0/16
163.185.0.0/17
163.185.128.0/18
163.185.192.0/19
163.185.224.0/20
163.185.240.0/21
163.185.248.0/24
163.185.250.0/23
163.185.252.0/22
163.186.0.0/15
163.188.0.0/16
192.12.34.0/23
192.12.40.0/24
192.12.43.0/24
192.23.0.0/22
192.23.4.0/23
192.23.6.0/24
192.23.8.0/22
192.23.12.0/24
192.23.14.0/23
192.23.16.0/23
192.23.19.0/24
192.23.20.0/23
192.23.22.0/24
192.23.23.0/24
192.23.24.0/22
192.23.28.0/22
192.23.32.0/24
192.23.33.0/24
192.23.34.0/23
192.23.36.0/23
192.23.38.0/23
192.23.40.0/23
192.23.42.0/24
192.23.43.0/24
192.23.44.0/24
192.23.45.0/24
192.23.46.0/23
192.23.48.0/21
192.23.56.0/23
192.23.58.0/24
192.23.59.0/24
192.23.60.0/22
192.23.65.0/24
192.23.66.0/23
192.23.68.0/23
192.23.71.0/24
192.23.72.0/24
192.23.73.0/24
192.23.74.0/23
192.23.76.0/22
192.23.80.0/22
192.23.84.0/23
192.23.86.0/24
192.23.87.0/24
192.23.88.0/23
192.23.90.0/23
192.23.92.0/22
192.23.96.0/22
192.23.100.0/24
192.23.101.0/24
192.23.102.0/23
192.23.104.0/23
192.23.106.0/23
192.23.108.0/23
192.23.110.0/24
192.23.111.0/24
192.23.112.0/21
192.23.120.0/22
192.23.127.0/24
192.23.128.0/23
192.23.130.0/24
192.23.131.0/24
192.23.132.0/22
192.23.136.0/22
192.23.140.0/23
192.23.142.0/24
192.23.143.0/24
192.23.144.0/21
192.23.152.0/22
192.23.156.0/24
192.23.158.0/23
192.23.160.0/22
192.23.164.0/24
192.23.166.0/23
192.23.168.0/23
192.23.170.0/23
192.23.172.0/23
192.23.174.0/23
192.23.176.0/23
192.23.178.0/23
192.23.180.0/23
192.23.182.0/24
192.23.183.0/24
192.23.184.0/23
192.23.186.0/24
192.23.188.0/22
192.23.192.0/22
192.23.196.0/23
192.23.198.0/24
192.23.199.0/24
192.23.200.0/21
192.23.208.0/20
192.23.224.0/21
192.23.232.0/22
192.23.236.0/24
192.23.237.0/24
192.23.238.0/24
192.23.239.0/24
192.23.240.0/21
192.23.248.0/24
192.23.249.0/24
192.23.250.0/23
192.23.252.0/22
192.31.32.0/24
192.31.36.0/24
192.58.37.0/24
192.58.38.0/23
195.19.192.0/24
198.136.232.0/24
198.160.175.0/24
198.160.176.0/24
198.176.175.0/24
199.6.128.0/21
199.6.136.0/24
199.6.137.0/24
199.6.138.0/23
199.6.140.0/22
199.6.144.0/22
199.6.148.0/24
199.6.149.0/24
199.6.150.0/23
199.6.152.0/21
199.6.160.0/21
199.6.168.0/24
199.6.169.0/24
199.6.170.0/23
199.6.172.0/22
199.6.176.0/20
199.6.192.0/23
199.6.194.0/24
199.6.195.0/24
199.6.196.0/22
199.6.200.0/21
199.6.208.0/22
199.6.212.0/22
199.6.216.0/21
199.6.224.0/21
199.6.232.0/22
199.6.236.0/22
199.6.240.0/22
199.6.244.0/22
199.6.248.0/21
199.168.0.0/21
199.168.8.0/23
204.17.157.0/24
204.17.158.0/23
204.17.160.0/23
204.17.162.0/24
204.126.126.0/23
212.192.205.0/24
212.193.96.0/24

Other ASNs named Schlumberger Limited

1 other network uses the same organisation name; together with AS72 they announce 1,153,536 IPv4 addresses.

ASNNameIPv4 addresses

AS2567SLB-WESTERNGECO-AS - Schlumberger Limited US1,024

Similar-sized networks in United States

ASNNameIPv4 addresses

AS22561#87 CENTURYLINK-LEGACY-LIGHTCORE - CenturyLink Communications, LLC1,228,800

AS4010#88 DNIC-AS-04010 - Headquarters, USAISC1,175,808

AS3371#89 MCI-ASN - Verizon Business1,153,280

AS33659#91 CMCS - Comcast Cable Communications, LLC1,147,136

AS7155#92 VIASAT-SP-BACKBONE - ViaSat,Inc.1,143,296

AS109#93 CISCOSYSTEMS - CISCO SYSTEMS, INC.1,141,504

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