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Autonomous System

AS63023 · GTHost

Overview

AS63023 is announced on the Internet: RIPE RIS route collectors currently see 338 IPv4 prefixes and 30 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 90,880 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 94 upstream neighbours (transit providers or peers) and 60 downstream neighbours (customers or networks it carries). Its most visible upstreams are Cogent Communications, LLC (AS174), Zayo Bandwidth (AS6461), and GTT Communications Inc. (AS3257). AS63023 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:01 PM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 45.142.216.1

The trace goes to 45.142.216.1, the first address of 45.142.216.0/22. 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 (338 prefixes)

PrefixAddresses
2.56.117.0/24256
5.180.23.0/24256
23.26.145.0/24256
23.27.197.0/24256
23.137.4.0/24256
23.137.12.0/24256
23.137.28.0/24256
23.137.84.0/24256
23.138.228.0/24256
23.139.20.0/24256
23.139.36.0/24256
23.139.84.0/24256
23.150.152.0/24256
23.150.248.0/24256
23.154.136.0/24256
23.157.40.0/24256
23.157.88.0/24256
23.158.40.0/24256
23.158.56.0/24256
23.158.200.0/24256
23.160.72.0/24256
23.162.152.0/24256
23.166.88.0/24256
23.168.72.0/24256
38.22.17.0/24256
38.64.138.0/24256
38.68.134.0/24256
38.68.135.0/24256
38.72.132.0/24256
38.75.136.0/23512
38.83.112.0/24256
38.83.113.0/24256
38.83.114.0/24256
38.86.135.0/24256
38.89.70.0/24256
38.91.100.0/23512
38.91.102.0/24256
38.91.106.0/23512
38.96.255.0/24256
38.99.82.0/24256
38.99.247.0/24256
38.107.226.0/24256
38.109.228.0/24256
38.110.1.0/24256
38.114.114.0/24256
38.114.119.0/24256
38.114.120.0/24256
38.114.121.0/24256
38.114.122.0/24256
38.114.123.0/24256
38.121.43.0/24256
38.128.66.0/24256
38.143.66.0/24256
38.224.162.0/24256
45.66.164.0/24256
45.86.48.0/24256
45.86.49.0/24256
45.86.50.0/24256
45.86.51.0/24256
45.86.77.0/24256
45.88.160.0/24256
45.88.170.0/24256
45.88.171.0/24256
45.88.178.0/24256
45.88.179.0/24256
45.88.181.0/24256
45.89.96.0/24256
45.89.98.0/24256
45.89.197.0/24256
45.89.198.0/24256
45.89.199.0/24256
45.136.115.0/24256
45.142.216.0/221,024
45.149.112.0/24256
45.192.2.0/24256
45.195.2.0/24256
45.195.89.0/24256
45.195.137.0/24256
45.196.193.0/24256
45.196.224.0/24256
45.197.134.0/24256
45.206.0.0/24256
45.206.52.0/24256
46.34.44.0/24256
46.254.106.0/24256
62.76.226.0/24256
64.29.180.0/24256
64.190.213.0/24256
66.163.112.0/24256
66.163.114.0/24256
66.163.115.0/24256
66.163.116.0/24256
66.163.117.0/24256
66.163.118.0/24256
66.163.119.0/24256
66.163.120.0/24256
66.163.121.0/24256
66.163.122.0/24256
66.163.123.0/24256
66.163.125.0/24256

Showing the first 100 of 338, in address order. Complete list on RIPEstat

IPv6 prefixes (30 prefixes)

Prefix
2602:fec3:f00::/48
2604:7580:f2::/48
2604:86c0::/36
2604:86c0:1000::/36
2604:86c0:2000::/36
2604:86c0:3000::/36
2604:86c0:4000::/36
2604:86c0:5000::/36
2604:86c0:6000::/36
2604:86c0:7000::/36
2604:86c0:8000::/36
2604:86c0:9000::/36
2604:86c0:a000::/36
2604:86c0:b000::/36
2604:86c0:f000::/40
2604:86c0:f100::/40
2604:86c0:f200::/40
2604:86c0:f300::/40
2604:86c0:f400::/40
2604:86c0:f500::/40
2604:86c0:f600::/40
2605:e240:fe00::/48
2605:e240:fe05::/48
2605:e240:fe07::/48
2605:e240:fe0a::/48
2a07:e02:1100::/40
2a0f:f400::/29
2a10:fa81:1a00::/40
2a13:c240::/29
2a13:e040::/29

Neighbours

Upstreams (transit or peers) (94)

ASNetworkVisibility
AS174Cogent Communications, LLC6,151
AS6461Zayo Bandwidth4,388
AS3257GTT Communications Inc.3,781
AS6939Hurricane Electric LLC1,437
AS35280F5 Networks SARL159
AS34019Hivane Association154
AS25091IP-Max SA147
AS50629LWLcom GmbH117
AS3935131173 Services AB115
AS34927iFog GmbH114
AS8218-107
AS5405Inter.link GmbH106
AS14840BR.Digital Telecom104
AS24482SG.GS102
AS61049Exascale Ltd101
AS34177Celeste SAS100
AS20485Joint Stock Company TransTeleCom99
AS12389PJSC Rostelecom97
AS8220COLT Technology Services Group Limited93
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH91
AS20764CJSC RASCOM87
AS1103SURF B.V.82
AS48362-80
AS33891Core-Backbone GmbH79
AS3214xTom GmbH78
AS49434FBW NETWORKS SAS73
AS29075IELO-LIAZO SERVICES SAS70
AS6696VERIXI SA63
AS8298IPng Networks GmbH61
AS6204INTERKVM HOST SRL60

The 30 most visible of 94.

Downstreams (customers) (60)

ASNetworkVisibility
AS215540GLOBAL CONNECTIVITY SOLUTIONS LLP1,002
AS44559IT HOSTLINE LTD961
AS39798MivoCloud MivoCloud SRL857
AS209372WS Telecom Inc797
AS30088GTHost784
AS205840Fonecloud GmbH669
AS214238iwihost HOST TELECOM LTD647
AS152672Aiyun (HK) Network615
AS218964QUATTRO APPS LTD615
AS219359Edge Core FZE588
AS26383Baxet Group Inc.527
AS136258BrainStorm Network, Inc520
AS20724-496
AS27463-469
AS213690-437
AS52122-432
AS151338-432
AS46873Host Color415
AS211056-401
AS213541-376
AS218674-368
AS199301-354
AS199915-354
AS61003-288
AS198652-276
AS24947-274
AS209363-274
AS197234-272
AS198243-272
AS199412-272

The 30 most visible of 60.

119 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.