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Autonomous System

AS72

Schlumberger Limited

Announced IPs
1,152,000
CIDR prefixes
79
ASN
AS72

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

57/100
Caution
How this score is built
  • Baseline (neutral) 65
  • Active-threat / abuse risk −12
  • Enterprise allocation +4
  • Trust score 57 / 100

Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →

About SLB

SLB, formerly known as Schlumberger, is a multinational oilfield services company. Founded in France in 1926, the company is now incorporated as SLB N.V.

Founded
1926
Headquarters
Houston
Industry
petroleum industry
Employees
100,000

⚠ 2 MOAS prefixes — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS72 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

PrefixOrigin ASNsLast detected (UTC)
192.23.185.0/24 AS72, AS10094 2026-10-18 13:44:38
192.23.62.0/24 AS72, AS32034 2026-10-18 13:44:38

Network profile

Source: PeeringDB →
Network type Enterprise
Geographic scope Global
Traffic ratio Not Disclosed
Peering policy Selective
IRR record AS-SLB

Present at 2 internet exchanges: NL-ix: Main, MegaIX Singapore

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
136.250.0.0/15 131.1K
99.4%
Schlumberger Limited US — —
136.252.0.0/15 131.1K
99.0%
Schlumberger Limited US — —
163.186.0.0/15 131.1K
99.4%
Schlumberger Limited US — —
128.58.0.0/16 65.5K
99.3%
Schlumberger Limited US — —
129.87.0.0/16 65.5K
99.2%
Schlumberger Limited US — —
134.32.0.0/16 65.5K
99.4%
Schlumberger Limited US — —
136.249.0.0/16 65.5K
99.4%
Schlumberger Limited US — —
136.253.0.0/16 65.5K
99.4%
Schlumberger Limited US — —
136.254.0.0/16 65.5K
99.4%
Schlumberger Limited US — —
137.144.0.0/16 65.5K
99.5%
Schlumberger Limited US — —
163.183.0.0/16 65.5K
99.4%
Schlumberger Limited US — —
163.184.0.0/16 65.5K
99.4%
Schlumberger Limited US — —
163.188.0.0/16 65.5K
99.4%
Schlumberger Limited US — —
134.32.0.0/17 32.8K
99.3%
Schlumberger Limited US — —
136.252.0.0/17 32.8K
99.4%
Schlumberger Limited US — —
163.185.0.0/17 32.8K
99.4%
Schlumberger Limited US — —
199.6.128.0/17 32.8K
88.5%
Schlumberger Limited US — —
134.32.192.0/18 16.4K
99.4%
Schlumberger Limited US — —
163.185.128.0/18 16.4K
99.4%
Schlumberger Limited US — —
192.23.192.0/18 16.4K
99.3%
Schlumberger Limited US Texas Houston
199.6.192.0/18 16.4K
99.4%
Schlumberger Limited US — —
134.32.160.0/19 8.2K
99.6%
Schlumberger Limited US — —
163.185.192.0/19 8.2K
99.3%
Schlumberger Limited US — —
192.23.32.0/19 8.2K
99.4%
Schlumberger Limited US Texas Houston
199.6.160.0/19 8.2K
99.4%
Schlumberger Limited US — —
134.32.128.0/20 4.1K
99.2%
Schlumberger Limited US — —
136.252.144.0/20 4.1K
99.5%
Schlumberger Limited US — —
136.252.208.0/20 4.1K
99.3%
Schlumberger Limited US — —
163.185.224.0/20 4.1K
99.5%
Schlumberger Limited US — —
192.23.80.0/20 4.1K
99.4%
Schlumberger Limited US — —
192.23.96.0/20 4.1K
99.2%
Schlumberger Limited US — —
192.23.128.0/20 4.1K
99.5%
Schlumberger Limited US — —
199.6.144.0/20 4.1K
99.1%
Schlumberger Limited US — —
134.32.152.0/21 2.0K
99.4%
Schlumberger Limited US — —
136.252.128.0/21 2.0K
87.1%
Schlumberger Limited US — —
136.252.168.0/21 2.0K
99.7%
Schlumberger Limited US — —
136.252.232.0/21 2.0K
87.1%
Schlumberger Limited US — —
136.252.240.0/21 2.0K
99.6%
Schlumberger Limited US — —
163.185.240.0/21 2.0K
99.3%
Schlumberger Limited US — —
192.23.24.0/21 2.0K
99.6%
Schlumberger Limited US — —
192.23.72.0/21 2.0K
99.6%
Schlumberger Limited US — —
192.23.112.0/21 2.0K
99.3%
Schlumberger Limited US — —
192.23.136.0/21 2.0K
99.4%
Schlumberger Limited US — —
192.23.168.0/21 2.0K
99.3%
Schlumberger Limited US Texas Houston
192.23.176.0/21 2.0K
99.4%
Schlumberger Limited US Texas Houston
199.6.136.0/21 2.0K
0.0%
Schlumberger Limited US — —
199.168.0.0/21 2.0K
99.4%
Schlumberger Limited US — —
134.32.144.0/22 1.0K
99.0%
Schlumberger Limited US — —
136.252.164.0/22 1.0K
99.0%
Schlumberger Limited US — —
136.252.180.0/22 1.0K
99.3%
Schlumberger Limited US — —
136.252.184.0/22 1.0K
99.6%
Schlumberger Limited US — —
136.252.192.0/22 1.0K
99.2%
Schlumberger Limited US — —
136.252.204.0/22 1.0K
99.1%
Schlumberger Limited US — —
136.252.228.0/22 1.0K
99.4%
Schlumberger Limited US — —
163.185.252.0/22 1.0K
99.4%
Schlumberger Limited US — —
192.23.0.0/22 1.0K
99.5%
Schlumberger Limited US — —
192.23.8.0/22 1.0K
99.6%
Schlumberger Limited US — —
192.23.20.0/22 1.0K
98.9%
Schlumberger Limited US — —
192.23.28.0/22 1.0K
99.5%
Schlumberger Limited US — —
192.23.96.0/22 1.0K
99.4%
Schlumberger Limited US — —
192.23.108.0/22 1.0K
99.3%
Schlumberger Limited US — —
192.23.120.0/22 1.0K
99.3%
Schlumberger Limited US — —
192.23.132.0/22 1.0K
99.4%
Schlumberger Limited US — —
192.23.148.0/22 1.0K
99.3%
Schlumberger Limited US — —
192.23.152.0/22 1.0K
99.1%
Schlumberger Limited US — —
192.23.160.0/22 1.0K
99.4%
Schlumberger Limited US — —
192.23.180.0/22 1.0K
99.5%
Schlumberger Limited US — —
192.23.188.0/22 1.0K
99.5%
Schlumberger Limited US Texas Houston
199.6.128.0/22 1.0K
0.0%
Schlumberger Limited NL — —
134.32.150.0/23 512
99.6%
Schlumberger Limited US — —
136.252.136.0/23 512
99.4%
Schlumberger Limited US — —
136.252.160.0/23 512
99.6%
Schlumberger Limited US — —
136.252.178.0/23 512
98.8%
Schlumberger Limited US — —
136.252.188.0/23 512
99.6%
Schlumberger Limited US — —
136.252.198.0/23 512
99.4%
Schlumberger Limited US — —
136.252.202.0/23 512
99.8%
Schlumberger Limited US — —
136.252.226.0/23 512
99.2%
Schlumberger Limited US — —
136.252.254.0/23 512
99.8%
Schlumberger Limited US — —
163.185.250.0/23 512
99.2%
Schlumberger Limited US — —
192.12.34.0/23 512
99.2%
Schlumberger Limited US — —
192.23.4.0/23 512
99.2%
Schlumberger Limited US — —
192.23.14.0/23 512
51.8%
Schlumberger Limited US — —
192.23.16.0/23 512
99.2%
Schlumberger Limited US — —
192.23.22.0/23 512
98.8%
Schlumberger Limited US — —
192.23.26.0/23 512
99.6%
Schlumberger Limited US — —
192.23.66.0/23 512
99.2%
Schlumberger Limited US — —
192.23.68.0/23 512
99.0%
Schlumberger Limited US — —
192.23.100.0/23 512
99.2%
Schlumberger Limited US — —
192.23.106.0/23 512
99.4%
Schlumberger Limited US — —
192.23.128.0/23 512
99.8%
Schlumberger Limited US — —
192.23.144.0/23 512
99.4%
Schlumberger Limited US — —
192.23.158.0/23 512
98.8%
Schlumberger Limited US — —
192.23.160.0/23 512
99.4%
Schlumberger Limited US — —
192.23.166.0/23 512
99.8%
Schlumberger Limited US — —
192.23.178.0/23 512
99.2%
Schlumberger Limited US — —
192.23.184.0/23 512
99.6%
Schlumberger Limited US — —
192.23.188.0/23 512
99.6%
Schlumberger Limited US Texas Houston
192.58.38.0/23 512
99.8%
Schlumberger Limited US — —
199.6.132.0/23 512
99.4%
Schlumberger Limited US — —
199.6.134.0/23 512
0.0%
Schlumberger Limited NL — —

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS72 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
192.23.186.0/24 3,884,883 2026-10-18 13:44:56
192.23.19.0/24 177,671 2026-10-18 13:22:43
192.23.91.0/24 82,386 2026-10-18 13:37:43
192.23.175.0/24 66,975 2026-10-18 13:23:08
192.23.8.0/24 64,563 2026-10-18 13:37:43
192.23.152.0/24 58,377 2026-10-18 13:22:41
192.23.156.0/24 54,928 2026-10-18 13:22:32
163.184.0.0/16 49,564 2026-10-18 13:44:56
192.23.190.0/24 46,419 2026-10-18 12:34:58
192.23.58.0/24 45,939 2026-10-18 13:44:56
192.23.162.0/24 45,933 2026-10-18 13:44:56
192.23.166.0/24 44,642 2026-10-18 13:37:42
192.23.135.0/24 43,435 2026-10-18 13:44:56
192.23.163.0/24 43,409 2026-10-18 13:44:56
212.193.96.0/24 42,407 2026-10-18 13:42:47
192.23.153.0/24 42,190 2026-10-18 13:37:41
192.23.176.0/24 41,593 2026-10-18 13:22:55
212.192.205.0/24 40,774 2026-10-18 13:42:47
192.23.189.0/24 40,774 2026-10-18 13:26:13
192.23.177.0/24 39,687 2026-10-18 13:37:42
192.23.21.0/24 36,273 2026-10-18 13:03:05
192.23.198.0/24 35,761 2026-10-18 13:23:20
192.23.20.0/24 31,682 2026-10-18 13:37:42
195.19.192.0/24 31,336 2026-10-18 13:22:57
192.23.130.0/24 31,299 2026-10-18 13:23:18
192.23.185.0/24 30,343 2026-10-18 13:39:56
136.253.0.0/16 26,851 2026-10-18 13:37:41
199.6.160.0/21 24,034 2026-10-18 13:37:41
163.185.0.0/16 24,009 2026-10-18 13:37:41
128.58.0.0/16 23,978 2026-10-18 13:37:41
192.58.37.0/24 23,662 2026-10-18 13:37:41
192.58.38.0/23 23,634 2026-10-18 13:37:41
192.23.0.0/16 23,498 2026-10-18 13:37:41
204.17.158.0/23 22,724 2026-10-18 13:37:41
204.17.160.0/23 22,702 2026-10-18 13:37:41
192.23.44.0/24 22,700 2026-10-18 13:37:41
199.6.148.0/24 22,628 2026-10-18 13:37:41
192.23.142.0/24 22,598 2026-10-18 13:37:41
199.6.136.0/24 22,571 2026-10-18 13:37:41
192.23.37.0/24 22,460 2026-10-18 13:37:41
192.23.72.0/24 22,395 2026-10-18 13:37:41
199.6.232.0/24 22,334 2026-10-18 13:37:41
192.23.92.0/24 22,231 2026-10-18 13:37:41
199.6.200.0/21 22,231 2026-10-18 13:37:41
192.23.22.0/24 22,178 2026-10-18 13:37:41
199.168.8.0/23 22,143 2026-10-18 13:37:41
199.6.194.0/24 22,132 2026-10-18 13:37:41
192.23.80.0/24 22,126 2026-10-18 13:37:41
192.23.93.0/24 22,125 2026-10-18 13:37:41
192.23.75.0/24 22,106 2026-10-18 13:37:41

Showing top 50 of 143 announced prefixes by sample volume.

Frequently Asked Questions

What is AS72?

AS72 is an Autonomous System Number assigned to Schlumberger Limited. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS72 announce?

AS72 announces 1.15M IPv4 addresses distributed across 79 routed CIDR prefixes. The network is registered in United States.

Who operates AS72?

AS72 is operated by Schlumberger Limited. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS72 registered in?

AS72 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-10-18 13:54:04 UTC
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