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AS72Schlumberger Limited

United StatesRegistryARIN

As of 23rd October 2026, AS72 (Schlumberger Limited), a network registered in the United States with ARIN, originates 138 IPv4 prefixes covering 1.3M addresses. By IPv4 address space that makes it the 395th-largest of the 79,658 networks we see originating IPv4, and the 94th-largest of 18,483 in the United States. It is seen behind 37 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS174 (Cogent Communications, LLC). 1% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. Over 99% of its routes reach at least 90% of full-feed peers, and 2 prefixes are also originated by another network.

At a glance

IPv4 prefixes

138

IPv6 prefixes

0

IPv4 addresses

1.3M

IPv6 /64s

0

Upstream graph

The networks AS72 is seen behind, one and two hops out, drawn from real AS paths.

AS72Toward the internet core
Upstream graph for AS72: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS72Schlumberger Limi…This networkAS174Cogent Communicat…AS1273Vodafone Group PLCAS3300British Telecommu…AS6660Vodafone Enterpri…AS6939Hurricane Electri…AS151326DCConnect Communi…AS1299Arelion (fka. Tel…AS6667Elisa OyjAS41811CONVERGENCE (GROU…AS2914NTT America, Inc.AS20130Depaul UniversityAS132337Axclusive

Networks observed one and two hops upstream of AS72 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

78

adjacent networks

Upstreams
3747%
Peers
4153%
Downstreams
00%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS72
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer6,34275
AS174Cogent Communications, LLCUSPeer73714
AS1273Vodafone Group PLCEUPeer52877
AS3300British Telecommunications LimitedGBPeer38577
AS6660Vodafone Enterprise Equipment LimitedGBPeer32561
AS5400British Telecommunications (International) GBPeer30877
AS8359MTS PJSCRUPeer16164
AS35104QMOBILE JSCKZPeer15477
AS24785Joint Transit (Broadband Hosting B.V.)NLPeer1337
AS3216Vimpelcom PJSCRUPeer11759

Prefixes

All 138

The largest blocks AS72 originates, widest first.

Largest prefixes originated by AS72
PrefixAddressesVisibility
128.58.0.0/1665.5k77/77
129.87.0.0/1665.5k77/77
134.32.0.0/1665.5k77/77
136.249.0.0/1665.5k77/77
136.250.0.0/1665.5k77/77
136.251.0.0/1665.5k77/77
136.252.0.0/1665.5k77/77
136.253.0.0/1665.5k77/77
136.254.0.0/1665.5k77/77
137.144.0.0/1665.5k77/77

Routing health

How AS72's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid1.4%2
  • Invalid0.0%0
  • No ROA98.6%136

Propagation

  • Globally propagated90% of full-feed peers or more99.3%137
  • Partially propagated40% to 90%0.7%1
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 138 prefixes

Recent changes

Announcements that started or stopped since 24th Sept 2026.

No announcement by AS72 started or stopped in this period.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.