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Autonomous System

AS51375 · STC BAHRAIN B.S.C CLOSED

Overview

AS51375 is announced on the Internet: RIPE RIS route collectors currently see 408 IPv4 prefixes and 13 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 174,336 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 61 upstream neighbours (transit providers or peers) and 18 downstream neighbours (customers or networks it carries). Its most visible upstreams are Saudi Telecom Company JSC (AS39386), BEYON B.S.C. (AS5416), and GulfBridgeInternational Gulf Bridge International Inc. (AS200612). AS51375 was assigned by RIPE NCC, and its registration country is Bahrain.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 9:49 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 37.131.0.1, the first address of 37.131.0.0/17. An address picked inside a prefix may not answer (nothing listens there, or the network filters probes): the trace then shows the path up to the last network that replies.

Announced prefixes

IPv4 prefixes (408 prefixes)

PrefixAddresses
37.131.0.0/1732,768
37.131.0.0/24256
37.131.1.0/24256
37.131.2.0/24256
37.131.3.0/24256
37.131.4.0/24256
37.131.5.0/24256
37.131.6.0/24256
37.131.7.0/24256
37.131.8.0/24256
37.131.9.0/24256
37.131.10.0/24256
37.131.11.0/24256
37.131.12.0/24256
37.131.13.0/24256
37.131.14.0/24256
37.131.15.0/24256
37.131.16.0/24256
37.131.17.0/24256
37.131.20.0/24256
37.131.21.0/24256
37.131.22.0/24256
37.131.23.0/24256
37.131.24.0/24256
37.131.25.0/24256
37.131.26.0/24256
37.131.27.0/24256
37.131.28.0/24256
37.131.29.0/24256
37.131.30.0/24256
37.131.31.0/24256
37.131.32.0/24256
37.131.33.0/24256
37.131.38.0/24256
37.131.39.0/24256
37.131.40.0/24256
37.131.41.0/24256
37.131.42.0/24256
37.131.43.0/24256
37.131.44.0/24256
37.131.45.0/24256
37.131.47.0/24256
37.131.48.0/24256
37.131.49.0/24256
37.131.51.0/24256
37.131.55.0/24256
37.131.56.0/24256
37.131.57.0/24256
37.131.58.0/24256
37.131.59.0/24256
37.131.60.0/24256
37.131.61.0/24256
37.131.62.0/24256
37.131.63.0/24256
37.131.66.0/24256
37.131.68.0/24256
37.131.69.0/24256
37.131.70.0/24256
37.131.71.0/24256
37.131.72.0/24256
37.131.73.0/24256
37.131.74.0/24256
37.131.75.0/24256
37.131.76.0/24256
37.131.77.0/24256
37.131.78.0/24256
37.131.79.0/24256
37.131.80.0/24256
37.131.81.0/24256
37.131.83.0/24256
37.131.84.0/24256
37.131.85.0/24256
37.131.88.0/24256
37.131.89.0/24256
37.131.90.0/24256
37.131.91.0/24256
37.131.92.0/24256
37.131.94.0/24256
37.131.95.0/24256
37.131.104.0/24256
37.131.105.0/24256
37.131.106.0/24256
37.131.107.0/24256
37.131.108.0/24256
37.131.109.0/24256
37.131.110.0/24256
37.131.111.0/24256
46.42.64.0/1816,384
46.42.72.0/24256
46.42.73.0/24256
46.42.74.0/24256
46.42.75.0/24256
46.42.80.0/24256
46.42.84.0/24256
46.42.85.0/24256
46.42.86.0/24256
46.42.92.0/24256
46.42.93.0/24256
46.42.94.0/24256
46.42.95.0/24256

Showing the first 100 of 408, in address order. Complete list on RIPEstat

IPv6 prefixes (13 prefixes)

Prefix
2a02:2578::/32
2a02:2578::/48
2a02:2578:80::/48
2a02:2578:11bb::/48
2a02:2578:11bd::/48
2a02:2578:1304::/48
2a02:2578:1305::/48
2a02:2578:130c::/48
2a02:2578:130d::/48
2a02:2578:1910::/44
2a02:2578:1930::/44
2a02:2578:2001::/48
2a02:c400::/29

Neighbours

Upstreams (transit or peers) (61)

ASNetworkVisibility
AS39386Saudi Telecom Company JSC2,527
AS5416BEYON B.S.C.1,500
AS200612GulfBridgeInternational Gulf Bridge International Inc.1,286
AS23764CTGNet216
AS31452ZAIN BAHRAIN B.S.C.213
AS6939Hurricane Electric LLC125
AS6453TATA COMMUNICATIONS (AMERICA) INC117
AS1273IDDQD-AS77
AS214329BGP Network LLC24
AS8220COLT Technology Services Group Limited10
AS35280F5 Networks SARL8
AS9002RETN Limited5
AS5405Inter.link GmbH4
AS34549meerfarbig GmbH & Co. KG4
AS20485Joint Stock Company TransTeleCom3
AS25091IP-Max SA3
AS29691Nine Internet Solutions AG3
AS34019Hivane Association3
AS34927iFog GmbH3
AS1267WIND TRE S.P.A.2
AS4230CLARO S.A.2
AS7195EDGEUNO S.A.S2
AS8298IPng Networks GmbH2
AS8758Iway AG2
AS12779IT.Gate S.p.A.2
AS12859BIT BV2
AS14840BR.Digital Telecom2
AS20764CJSC RASCOM2
AS24961WIIT AG2
AS33891Core-Backbone GmbH2

The 30 most visible of 61.

Downstreams (customers) (18)

ASNetworkVisibility
AS200612GulfBridgeInternational Gulf Bridge International Inc.1,158
AS23764CTGNet609
AS13335Cloudflare, Inc.489
AS5416BEYON B.S.C.440
AS35568Nuetel Communications B.S.C381
AS35546Northstar Technology Company W.L.L.315
AS31452ZAIN BAHRAIN B.S.C.297
AS47589Kuwait Telecommunications Company K.S.C.C.287
AS211612cache77 Datacamp Limited268
AS35313Infonas W.L.L.241
AS39386-129
AS197000-15
AS1273IDDQD-AS11
AS25152-7
AS35457-2
AS138915Kaopu Cloud HK Limited2
AS8697-1
AS206264-1

71 more neighbours appear on both sides of this network depending on the path, so they are counted in neither list.

Visibility is RIPEstat's count of how often the route collectors observed the link. It compares neighbours with each other; it is not a traffic volume.

How to read this page

An Autonomous System (AS) is a network run under one routing policy: an internet provider, a cloud, a content network, a university. Each one has a number, its ASN, assigned by a regional registry (ARIN, RIPE NCC, APNIC, LACNIC, AFRINIC), and uses BGP, the protocol networks use to tell each other where addresses are, to announce the blocks of addresses it delivers to.

A prefix such as 203.0.113.0/24 is a block of addresses: the number after the slash says how many bits are fixed, so a /24 holds 256 IPv4 addresses and a /16 holds 65,536. Networks often announce a large block and smaller pieces of it at the same time, which is why the address total counts each address once.

Neighbours come from the paths themselves. A network that appears just before this one in a path, on the collector's side, is an upstream: a transit provider or a peer. One that appears just after it is a downstream, usually a customer. Peering at an internet exchange also shows up as an upstream, so the upstream list is not a list of paid transit.

The data comes from RIPEstat, run by the RIPE NCC, which gathers the routing tables of hundreds of networks through its RIS route collectors. This page reads it when it is visited and keeps it for 12 hours at most; the BGP viewer reads it live.

Frequently asked questions

How do I find the ASN of an IP address?
Type the address in the BGP viewer: it shows the prefix that covers it, the AS that originates that prefix and the paths seen towards it. A traceroute also names the network of each hop, so you can see every AS a connection crosses.
Why does one company have several ASNs?
Large operators split their network by region, by activity or by history: a cloud may use one number for its backbone and another for a region, and every acquisition brings its own numbers. Each number has its own page, with its own prefixes and neighbours.
Why do prefix counts differ from one site to another?
Each source sees the routing table from different collectors, at a different time, and counts differently: some include prefixes withdrawn in recent weeks, some merge a block and its pieces. This page counts the prefixes RIPE RIS collectors see originated by the network at the end of the latest two-week window, and counts each IPv4 address once.
Is this the list of IP ranges of a cloud provider?
It is what its networks announce, which is what the Internet routes to them. Many providers also publish an official list of ranges per service and region; that list is the reference for firewall rules, because a range can be announced before it is used, or announced by another of their AS numbers.