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Autonomous System

AS16276 · OVH SAS

Overview

AS16276 is announced on the Internet: RIPE RIS route collectors currently see 724 IPv4 prefixes and 43 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 4,648,192 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 135 upstream neighbours (transit providers or peers) and 256 downstream neighbours (customers or networks it carries). Its most visible upstreams are Cogent Communications, LLC (AS174), TELEFONICA GLOBAL SOLUTIONS SL (AS12956), and Arelion Sweden AB (AS1299). AS16276 was assigned by RIPE NCC, and its registration country is France.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 6:47 PM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 51.254.0.1

The trace goes to 51.254.0.1, the first address of 51.254.0.0/15. 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 (724 prefixes)

PrefixAddresses
2.26.132.0/24256
2.26.153.0/24256
2.27.97.0/24256
2.27.164.0/24256
2.58.85.0/24256
2.58.172.0/24256
5.39.0.0/1732,768
5.135.0.0/1665,536
5.172.36.0/24256
5.175.162.0/24256
5.175.168.0/24256
5.175.195.0/24256
5.175.226.0/24256
5.175.227.0/24256
5.178.110.0/24256
5.182.19.0/24256
5.196.0.0/1665,536
5.230.49.0/24256
5.230.153.0/24256
5.230.196.0/24256
5.231.64.0/24256
5.231.88.0/24256
5.231.207.0/24256
5.231.255.0/24256
8.7.244.0/24256
8.18.128.0/24256
8.18.172.0/24256
8.20.110.0/24256
8.21.41.0/24256
8.24.8.0/212,048
8.26.94.0/24256
8.29.224.0/24256
8.30.208.0/212,048
8.33.96.0/212,048
8.33.128.0/212,048
8.33.136.0/24256
8.33.137.0/24256
15.204.0.0/1732,768
15.204.128.0/1732,768
15.235.0.0/1732,768
15.235.128.0/1732,768
16.216.27.0/24256
16.217.96.0/24256
23.92.224.0/198,192
23.137.200.0/24256
23.151.184.0/24256
23.156.24.0/24256
23.156.25.0/24256
23.230.14.0/24256
23.230.93.0/24256
31.6.62.0/24256
31.24.81.0/24256
31.41.37.0/24256
31.56.219.0/24256
31.57.161.0/24256
31.57.199.0/24256
31.59.68.0/24256
31.77.120.0/24256
31.99.205.0/24256
37.59.0.0/1665,536
37.60.48.0/212,048
37.60.56.0/212,048
37.187.0.0/1665,536
40.27.29.0/24256
40.160.0.0/1732,768
40.160.128.0/198,192
40.160.224.0/24256
40.160.225.0/24256
40.160.226.0/24256
40.160.227.0/24256
40.160.228.0/24256
40.160.230.0/24256
40.160.231.0/24256
40.160.232.0/24256
40.160.233.0/24256
40.160.234.0/24256
40.160.235.0/24256
40.160.236.0/24256
40.160.237.0/24256
40.160.238.0/24256
40.160.239.0/24256
40.160.240.0/24256
40.160.241.0/24256
40.160.242.0/24256
40.160.244.0/24256
40.160.246.0/24256
40.160.248.0/24256
40.160.250.0/24256
40.160.252.0/24256
40.160.254.0/24256
43.226.0.0/23512
45.39.79.0/24256
45.43.142.0/24256
45.66.82.0/24256
45.66.83.0/24256
45.92.60.0/221,024
45.94.49.0/24256
45.94.50.0/24256
45.94.51.0/24256
45.112.195.0/24256

Showing the first 100 of 724, in address order. Complete list on RIPEstat

IPv6 prefixes (43 prefixes)

Prefix
2001:41d0::/32
2001:41d0:ab00::/48
2001:41d0:ab01::/48
2001:41d0:ab02::/48
2001:41d0:ab03::/48
2001:41d0:ab04::/48
2001:41d0:ab05::/48
2001:41d0:ab06::/48
2001:41d0:ab07::/48
2001:41d0:ab08::/48
2001:41d0:ab09::/48
2001:41d0:ab0a::/48
2001:41d0:ab0b::/48
2001:41d0:ab0c::/48
2001:41d0:ab0e::/48
2001:41d0:ab0f::/48
2001:41d0:ab10::/48
2001:41d0:ab11::/48
2001:41d0:ab12::/48
2001:41d0:ab13::/48
2001:41d0:ac00::/40
2402:1f00::/32
2402:1f00:8000::/40
2402:1f00:8100::/40
2402:1f00:8200::/40
2402:1f00:8300::/40
2402:1f00:8400::/48
2604:2dc0::/32
2604:2dc0:300::/48
2604:2dc0:301::/48
2604:2dc0:302::/48
2604:2dc0:303::/48
2604:2dc0:304::/48
2604:2dc0:305::/48
2604:2dc0:306::/48
2604:2dc0:307::/48
2604:2dc0:308::/48
2604:2dc0:309::/48
2604:2dc0:30a::/48
2604:2dc0:30b::/48
2604:2dc0:30c::/48
2607:5300::/32
2607:5300:603::/48

Neighbours

Upstreams (transit or peers) (135)

ASNetworkVisibility
AS174Cogent Communications, LLC4,671
AS12956TELEFONICA GLOBAL SOLUTIONS SL2,556
AS1299Arelion Sweden AB2,531
AS6762TELECOM ITALIA SPARKLE S.p.A.2,306
AS6939Hurricane Electric LLC1,710
AS4637Telstra Global1,369
AS6461Zayo Bandwidth1,329
AS3356Level 3 Parent, LLC1,255
AS2914NTT America, Inc.1,082
AS9002RETN Limited958
AS34549meerfarbig GmbH & Co. KG738
AS3320Deutsche Telekom AG652
AS6057Administracion Nacional de Telecomunicaciones488
AS34177Celeste SAS488
AS14840BR.Digital Telecom486
AS48362Stadtwerke Feldkirch484
AS50304Blix Solutions AS484
AS58057Securebit AG484
AS20764CJSC RASCOM482
AS37497-478
AS6424EDGOO NETWORKS UNIPESSOAL LDA447
AS328066-342
AS12389PJSC Rostelecom297
AS29075IELO-LIAZO SERVICES SAS294
AS2497Internet Initiative Japan Inc.288
AS5511Opentransit Orange S.A.282
AS7195EDGEUNO S.A.S281
AS4230CLARO S.A.274
AS13030Init7 (Switzerland) Ltd.262
AS1267WIND TRE S.P.A.256

The 30 most visible of 135.

Downstreams (customers) (256)

ASNetworkVisibility
AS215117HosterDaddy Private Limited730
AS215381RockHoster ROCKHOSTER PRIVATE LIMITED730
AS2096042E TELEKOMUNIKASYON LTD STI537
AS135073Eric Web Solutions Private Limited518
AS215311Regxa Company for Information Technology Ltd509
AS215759Ziax Ziax Ltd509
AS209334Modat B.V.506
AS213412ONYPHE SAS506
AS401839Pyro Inc.495
AS216032FLICKERLINK TECHNOLOGIES (OPC) PRIVATE LIMITED482
AS396919-322
AS64476-320
AS35540-316
AS219202-287
AS218579-280
AS218984-280
AS207043-279
AS219506-278
AS198180-277
AS22761-276
AS57878-275
AS219284-275
AS401608-275
AS215225-274
AS3280-273
AS57935-273
AS200184-273
AS210734-273
AS218537-273
AS218568-273

The 30 most visible of 256.

405 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.