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Autonomous System

AS17378 · TierPoint, LLC

Overview

AS17378 is announced on the Internet: RIPE RIS route collectors currently see 391 IPv4 prefixes and 50 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 856,576 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 29 upstream neighbours (transit providers or peers) and 124 downstream neighbours (customers or networks it carries). Its most visible upstreams are Zayo Bandwidth (AS6461), Cogent Communications, LLC (AS174), and Level 3 Parent, LLC (AS3356). AS17378 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 10:04 PM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 134.172.0.1

The trace goes to 134.172.0.1, the first address of 134.172.0.0/16. 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 (391 prefixes)

PrefixAddresses
8.34.28.0/221,024
12.202.147.0/24256
23.169.232.0/24256
24.248.88.0/24256
24.249.224.0/221,024
38.99.115.0/24256
38.109.140.0/23512
38.123.244.0/23512
40.133.32.0/212,048
40.138.220.0/221,024
40.142.8.0/221,024
40.142.16.0/204,096
40.142.32.0/198,192
40.142.32.0/221,024
40.142.36.0/221,024
40.142.40.0/221,024
40.142.44.0/221,024
40.142.48.0/221,024
40.142.52.0/221,024
40.142.56.0/221,024
40.142.60.0/221,024
40.142.64.0/1816,384
40.142.64.0/212,048
40.142.72.0/221,024
40.142.76.0/221,024
40.142.80.0/212,048
40.142.88.0/212,048
40.142.96.0/212,048
40.142.104.0/212,048
40.143.0.0/1816,384
40.143.0.0/212,048
40.143.8.0/212,048
40.143.16.0/212,048
40.143.24.0/212,048
40.143.32.0/212,048
40.143.40.0/212,048
40.143.48.0/221,024
40.143.52.0/221,024
40.143.56.0/212,048
40.143.72.0/212,048
40.143.72.0/23512
40.143.74.0/23512
40.143.76.0/23512
40.143.78.0/23512
40.143.80.0/204,096
40.143.80.0/212,048
40.143.88.0/212,048
40.143.96.0/198,192
40.143.96.0/212,048
40.143.104.0/212,048
40.143.112.0/212,048
40.143.114.0/24256
40.143.120.0/221,024
40.143.124.0/221,024
40.143.127.0/24256
40.143.128.0/1732,768
40.143.128.0/204,096
40.143.144.0/204,096
40.143.160.0/204,096
40.143.176.0/204,096
40.143.192.0/204,096
40.143.208.0/204,096
40.143.222.0/24256
40.143.224.0/204,096
40.143.240.0/212,048
40.143.248.0/23512
40.143.250.0/23512
40.143.252.0/23512
40.143.254.0/23512
50.21.101.0/24256
63.131.224.0/204,096
63.131.228.0/221,024
63.131.232.0/212,048
63.147.104.0/221,024
63.227.188.0/24256
63.246.0.0/198,192
63.254.152.0/212,048
63.254.152.0/221,024
63.254.154.0/24256
63.254.156.0/221,024
64.30.159.0/24256
65.61.96.0/198,192
65.99.192.0/1816,384
65.99.228.0/23512
65.99.238.0/23512
66.33.6.0/24256
66.36.16.0/204,096
66.36.16.0/212,048
66.36.24.0/212,048
66.45.160.0/198,192
66.45.160.0/204,096
66.45.176.0/212,048
66.45.184.0/221,024
66.45.188.0/221,024
66.159.102.0/24256
66.192.48.0/212,048
66.203.64.0/198,192
66.203.76.0/24256
66.206.192.0/204,096
66.206.202.0/24256

Showing the first 100 of 391, in address order. Complete list on RIPEstat

IPv6 prefixes (50 prefixes)

Prefix
2001:19b8::/32
2001:4970::/32
2600:2c00::/30
2600:2c00:1000::/36
2600:2c00:2000::/36
2600:2c00:3000::/36
2600:2c00:4000::/36
2600:2c00:5000::/36
2600:2c00:7000::/36
2600:2c00:8000::/36
2600:2c00:9000::/36
2600:2c00:b000::/36
2600:2c00:c000::/36
2600:2c00:f000::/36
2600:2c01::/36
2600:2c01:1000::/36
2600:2c01:3000::/36
2600:2c01:4000::/36
2600:2c01:5000::/36
2600:2c01:6000::/36
2600:2c01:7000::/36
2604:7e00::/32
2604:7e00::/44
2604:7e00:20::/44
2604:7e00:30::/44
2604:7e00:32::/48
2604:7e00:40::/44
2604:7e00:50::/44
2604:7e00:60::/44
2604:7e00:250::/48
2604:7e00:251::/48
2604:7e00:252::/48
2604:7e00:253::/48
2604:7e00:254::/48
2604:7f80::/32
2606:a700::/32
2606:a700::/36
2606:a700:1000::/36
2607:f1d0::/32
2607:f3f8::/32
2607:f3f8:1000::/36
2607:f3f8:2000::/36
2607:f3f8:4000::/36
2607:f3f8:6000::/36
2607:fc38::/32
2607:fdb8::/32
2607:fdb8::/36
2607:fdb8:1000::/36
2620:5f:4000::/48
2620:c3:a000::/48

Neighbours

Upstreams (transit or peers) (29)

ASNetworkVisibility
AS6461Zayo Bandwidth9,650
AS174Cogent Communications, LLC5,997
AS3356Level 3 Parent, LLC5,496
AS3257GTT Communications Inc.3,212
AS6939Hurricane Electric LLC1,701
AS25091IP-Max SA571
AS13576SDN Communications395
AS33891Core-Backbone GmbH242
AS137409GSL Networks Pty LTD161
AS14840BR.Digital Telecom125
AS13786Seabras 1 USA, LLC118
AS286GTT Communications Inc.106
AS6057-102
AS3303Swisscom (Schweiz) AG101
AS8359MTS PJSC92
AS9002RETN Limited67
AS4230CLARO S.A.60
AS60171AFR-IX TELECOM S.A.46
AS31133PJSC MegaFon30
AS971PureVoltage Hosting Inc.24
AS22773Cox Communications Inc.24
AS37468Angola Cables24
AS52025ParadoxNetworks Limited12
AS6204INTERKVM HOST SRL8
AS7575Australian Academic and Research Network (AARNet)8
AS394256Tech Futures Interactive Inc.8
AS8220COLT Technology Services Group Limited6
AS7195-4
AS64049-1

Downstreams (customers) (124)

ASNetworkVisibility
AS3700Cloud 9 Internet, Inc.591
AS395382COMMONWEALTH EQUITY SERVICES, INC.562
AS396839TekTonic553
AS40476Scala Hosting LLC542
AS26936USI INSURANCE SERVICES527
AS17034Gozunga LLC513
AS55045TekTonic511
AS1982Northwest Nexus Inc.481
AS398063Advisor360 LLC425
AS395591Election systems & Software423
AS24459RIMU HOSTING LIMITED360
AS30496-311
AS21913-303
AS62918-302
AS398581-301
AS23357-297
AS26998-282
AS46429-277
AS32062-276
AS393967-269
AS36745-268
AS19068-265
AS22385-265
AS26377-265
AS63189-265
AS203439-265
AS11180-264
AS11288-264
AS13480Ongoing Operations, LLC264
AS20100-264

The 30 most visible of 124.

23 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.