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Autonomous System

AS13335 · Cloudflare, Inc.

Overview

AS13335 is announced on the Internet: RIPE RIS route collectors currently see 2,523 IPv4 prefixes and 3,010 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 1,412,096 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 321 upstream neighbours (transit providers or peers) and 1,034 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), Level 3 Parent, LLC (AS3356), and GTT Communications Inc. (AS3257). AS13335 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 6:56 PM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 152.114.0.1

The trace goes to 152.114.0.1, the first address of 152.114.0.0/17. 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 (2,523 prefixes)

PrefixAddresses
1.0.0.0/24256
1.1.1.0/24256
5.10.214.0/24256
5.10.215.0/24256
5.83.149.0/24256
5.172.33.0/24256
5.226.183.0/24256
5.252.81.0/24256
8.6.112.0/24256
8.20.125.0/24256
8.21.10.0/24256
8.24.87.0/24256
8.27.64.0/24256
8.27.66.0/24256
8.27.67.0/24256
8.29.109.0/24256
8.29.228.0/24256
8.29.230.0/24256
8.29.231.0/24256
8.31.160.0/24256
8.31.161.0/24256
8.34.70.0/24256
8.34.146.0/24256
8.35.211.0/24256
8.39.125.0/24256
8.39.204.0/24256
8.39.214.0/24256
8.44.61.0/24256
8.44.62.0/24256
8.47.69.0/24256
16.5.144.0/204,096
23.131.204.0/24256
23.145.136.0/24256
23.145.152.0/24256
23.145.232.0/24256
23.145.248.0/24256
23.179.248.0/24256
23.180.136.0/24256
23.227.37.0/24256
23.227.38.0/23512
23.227.42.0/23512
23.227.48.0/23512
23.227.60.0/24256
31.185.108.0/24256
37.72.109.0/24256
37.153.170.0/24256
37.153.171.0/24256
38.96.28.0/23512
42.61.47.0/24256
43.229.39.0/24256
43.230.144.0/24256
45.6.45.0/24256
45.6.47.0/24256
45.12.44.0/24256
45.12.45.0/24256
45.43.147.0/24256
45.43.158.0/24256
45.45.255.0/24256
45.128.76.0/24256
45.130.106.0/24256
45.130.125.0/24256
45.134.227.0/24256
45.146.130.0/24256
45.148.100.0/24256
45.152.208.0/24256
45.157.17.0/24256
45.192.223.0/24256
45.192.224.0/24256
45.195.153.0/24256
45.196.29.0/24256
45.196.168.0/24256
45.198.114.0/24256
45.198.116.0/24256
45.198.139.0/24256
45.199.183.0/24256
45.199.188.0/24256
46.38.152.0/24256
49.238.236.0/221,024
49.238.236.0/24256
49.238.237.0/24256
49.238.238.0/24256
49.238.239.0/24256
51.194.144.0/221,024
51.241.128.0/23512
57.250.49.0/24256
57.250.50.0/24256
57.250.51.0/24256
57.250.58.0/24256
61.8.33.0/24256
61.32.240.0/24256
61.245.108.0/24256
62.144.59.0/24256
62.146.255.0/24256
64.8.255.0/24256
64.40.138.0/24256
64.40.140.0/24256
64.205.115.0/24256
65.110.63.0/24256
66.71.220.0/24256
66.80.5.0/24256

Showing the first 100 of 2,523, in address order. Complete list on RIPEstat

IPv6 prefixes (3,010 prefixes)

Prefix
2001:500:210::/48
2001:501:210::/48
2001:678:19c::/48
2400:cb00:4::/48
2400:cb00:11::/48
2400:cb00:12::/48
2400:cb00:14::/48
2400:cb00:15::/48
2400:cb00:16::/48
2400:cb00:17::/48
2400:cb00:19::/48
2400:cb00:20::/48
2400:cb00:21::/48
2400:cb00:22::/48
2400:cb00:23::/48
2400:cb00:26::/48
2400:cb00:27::/48
2400:cb00:28::/48
2400:cb00:29::/48
2400:cb00:31::/48
2400:cb00:34::/48
2400:cb00:35::/48
2400:cb00:38::/48
2400:cb00:39::/48
2400:cb00:40::/48
2400:cb00:44::/48
2400:cb00:45::/48
2400:cb00:46::/48
2400:cb00:47::/48
2400:cb00:48::/48
2400:cb00:49::/48
2400:cb00:50::/48
2400:cb00:51::/48
2400:cb00:52::/48
2400:cb00:53::/48
2400:cb00:54::/48
2400:cb00:56::/48
2400:cb00:57::/48
2400:cb00:59::/48
2400:cb00:61::/48
2400:cb00:63::/48
2400:cb00:64::/48
2400:cb00:65::/48
2400:cb00:66::/48
2400:cb00:67::/48
2400:cb00:69::/48
2400:cb00:70::/48
2400:cb00:71::/48
2400:cb00:72::/48
2400:cb00:73::/48
2400:cb00:74::/48
2400:cb00:75::/48
2400:cb00:77::/48
2400:cb00:78::/48
2400:cb00:79::/48
2400:cb00:80::/48
2400:cb00:81::/48
2400:cb00:83::/48
2400:cb00:84::/48
2400:cb00:85::/48
2400:cb00:86::/48
2400:cb00:87::/48
2400:cb00:88::/48
2400:cb00:89::/48
2400:cb00:90::/48
2400:cb00:94::/48
2400:cb00:97::/48
2400:cb00:98::/48
2400:cb00:100::/48
2400:cb00:102::/48
2400:cb00:103::/48
2400:cb00:106::/48
2400:cb00:107::/48
2400:cb00:109::/48
2400:cb00:112::/48
2400:cb00:113::/48
2400:cb00:114::/48
2400:cb00:115::/48
2400:cb00:116::/48
2400:cb00:119::/48
2400:cb00:120::/48
2400:cb00:121::/48
2400:cb00:123::/48
2400:cb00:124::/48
2400:cb00:125::/48
2400:cb00:126::/48
2400:cb00:128::/48
2400:cb00:131::/48
2400:cb00:132::/48
2400:cb00:134::/48
2400:cb00:136::/48
2400:cb00:137::/48
2400:cb00:138::/48
2400:cb00:140::/48
2400:cb00:141::/48
2400:cb00:143::/48
2400:cb00:144::/48
2400:cb00:145::/48
2400:cb00:147::/48
2400:cb00:148::/48

Showing the first 100 of 3,010, in address order. Complete list on RIPEstat

Neighbours

Upstreams (transit or peers) (321)

ASNetworkVisibility
AS1299Arelion Sweden AB7,782
AS3356Level 3 Parent, LLC5,753
AS3257GTT Communications Inc.5,652
AS174Cogent Communications, LLC4,988
AS34549meerfarbig GmbH & Co. KG3,077
AS6762TELECOM ITALIA SPARKLE S.p.A.3,033
AS2914NTT America, Inc.2,920
AS12956TELEFONICA GLOBAL SOLUTIONS SL2,583
AS9002RETN Limited2,133
AS6461Zayo Bandwidth2,120
AS34927iFog GmbH2,071
AS38008Aperture Science Limited2,066
AS48362Stadtwerke Feldkirch2,063
AS20764CJSC RASCOM2,056
AS25091IP-Max SA2,052
AS6057Administracion Nacional de Telecomunicaciones2,048
AS34177Celeste SAS2,046
AS34019Hivane Association2,042
AS6830LibertyGlobal Liberty Global Europe Holding B.V.2,041
AS6424EDGOO NETWORKS UNIPESSOAL LDA2,037
AS14840BR.Digital Telecom2,029
AS20485Joint Stock Company TransTeleCom2,026
AS47147Anexia Cloud Solutions GmbH2,021
AS6453TATA COMMUNICATIONS (AMERICA) INC1,995
AS8758Iway AG1,988
AS5511Opentransit Orange S.A.1,726
AS29075IELO-LIAZO SERVICES SAS1,560
AS4755TATA Communications formerly VSNL is Leading ISP1,385
AS37282-1,189
AS8218Zayo Infrastructure France SA1,141

The 30 most visible of 321.

Downstreams (customers) (1,034)

ASNetworkVisibility
AS395747Cloudflare, Inc.1,262
AS14789Cloudflare, Inc.1,029
AS210356BattleHost KAUA REIS DA SILVA trading as BattleHost808
AS202623Cloudflare Inc587
AS30103Zoom Video Communications, Inc580
AS135377UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED557
AS132839POWER LINE DATACENTER544
AS4907BGPNET PTE. LTD.540
AS215703FREAKHOSTING LTD540
AS265919BB Host LTDA539
AS270824-539
AS397032SPARKED HOST LLC538
AS213920-533
AS132892-524
AS216047-510
AS49304SAKURA LINK LIMITED494
AS1002-469
AS200596-444
AS209242-391
AS22061-338
AS36198-331
AS28680-326
AS57799-324
AS49240-323
AS402542-323
AS23467-322
AS402792-322
AS26324-321
AS42615-321
AS43937Playtech Software Ltd321

The 30 most visible of 1,034.

1,173 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.