Skip to content

Autonomous System

AS19905 · Vercara, LLC

Overview

AS19905 is announced on the Internet: RIPE RIS route collectors currently see 132 IPv4 prefixes and 26 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 35,328 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 8 upstream neighbours (transit providers or peers) and 36 downstream neighbours (customers or networks it carries). Its most visible upstreams are GTT Communications Inc. (AS3257), NTT America, Inc. (AS2914), and TATA COMMUNICATIONS (AMERICA) INC (AS6453). AS19905 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 12:56 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 139.104.72.1, the first address of 139.104.72.0/21. 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 (132 prefixes)

PrefixAddresses
5.36.169.0/24256
12.51.26.0/24256
24.248.247.0/24256
37.224.77.0/24256
46.184.55.0/24256
68.22.157.0/24256
68.71.223.0/24256
74.115.24.0/24256
74.115.26.0/24256
74.115.27.0/24256
74.115.28.0/24256
74.115.30.0/24256
77.232.97.0/24256
83.111.28.0/24256
91.102.233.0/24256
91.102.234.0/24256
91.102.235.0/24256
91.102.236.0/24256
91.102.237.0/24256
91.102.239.0/24256
91.229.32.0/24256
91.229.33.0/24256
95.140.160.0/24256
95.140.161.0/24256
109.71.24.0/24256
139.104.72.0/212,048
139.104.186.0/24256
146.88.242.0/24256
146.88.245.0/24256
146.88.246.0/24256
147.160.159.0/24256
156.137.1.0/24256
156.137.195.0/24256
156.154.92.0/24256
156.154.118.0/24256
156.154.120.0/24256
156.154.121.0/24256
156.154.152.0/24256
156.154.160.0/24256
156.154.161.0/24256
156.154.162.0/24256
156.154.163.0/24256
156.154.164.0/23512
156.154.166.0/24256
156.154.178.0/24256
156.154.179.0/24256
156.154.208.0/24256
156.154.209.0/24256
156.154.210.0/24256
156.154.211.0/24256
156.154.212.0/24256
156.154.213.0/24256
156.154.214.0/24256
156.154.215.0/24256
156.154.216.0/24256
156.154.217.0/24256
156.154.218.0/24256
156.154.219.0/24256
156.154.220.0/24256
156.154.221.0/24256
156.154.222.0/24256
156.154.223.0/24256
156.154.224.0/24256
156.154.225.0/24256
156.154.226.0/24256
156.154.227.0/24256
156.154.228.0/24256
156.154.229.0/24256
156.154.230.0/24256
156.154.231.0/24256
156.154.232.0/24256
156.154.233.0/24256
156.154.234.0/24256
156.154.236.0/24256
156.154.237.0/24256
156.154.238.0/24256
156.154.240.0/24256
156.154.241.0/24256
156.154.242.0/24256
156.154.243.0/24256
156.154.245.0/24256
156.154.246.0/24256
156.154.247.0/24256
165.72.190.0/24256
165.72.192.0/24256
178.249.176.0/24256
178.249.177.0/24256
184.185.28.0/24256
184.185.29.0/24256
185.98.183.0/24256
185.148.148.0/24256
185.148.150.0/24256
185.148.151.0/24256
192.193.81.0/24256
192.193.83.0/24256
193.8.250.0/24256
193.19.90.0/24256
193.19.91.0/24256
194.69.42.0/24256
194.126.231.0/24256

Showing the first 100 of 132, in address order. Complete list on RIPEstat

IPv6 prefixes (26 prefixes)

Prefix
2001:67c:3e8::/48
2403:c580:fff3::/48
2403:c580:fffd::/48
2610:a1:2000::/48
2610:a1:2001::/48
2610:a1:2002::/48
2610:a1:2003::/48
2610:a1:2004::/48
2610:a1:2005::/48
2610:a1:2006::/48
2610:a1:2007::/48
2610:a1:2008::/48
2610:a1:2009::/48
2610:a1:200a::/48
2610:a1:200b::/48
2610:a1:200c::/48
2610:a1:200d::/48
2610:a1:200f::/48
2610:a1:2016::/48
2610:a1:201c::/48
2610:a1:20ff::/48
2620:1d6:fff3::/48
2620:1d6:fffd::/48
2a02:cb81:1014::/48
2a05:4a40:fff3::/48
2a05:4a40:fffd::/48

Neighbours

Upstreams (transit or peers) (8)

ASNetworkVisibility
AS3257GTT Communications Inc.3,911
AS2914NTT America, Inc.3,560
AS6453TATA COMMUNICATIONS (AMERICA) INC3,279
AS260GTT Americas, LLC433
AS4637Telstra Global270
AS6461Zayo Bandwidth244
AS286GTT Communications Inc.38
AS12956TELEFONICA GLOBAL SOLUTIONS SL15

Downstreams (customers) (36)

ASNetworkVisibility
AS54697EverBank, N.A.537
AS10584TradeWeb, LLC456
AS22894Network Information Center Mexico382
AS26380MasterCard Technologies LLC374
AS13008Entain Services Austria GmbH357
AS133847Anpple Tech Enterprise311
AS13688Public Service Enterprise Group296
AS11313Fannie Mae292
AS209924MLB Limited287
AS36544BWIN.PARTY ENTERTAINMENT (NJ), LLC283
AS397688-282
AS26848-278
AS20577-277
AS19305-273
AS19524-272
AS21110-272
AS20311-271
AS27386-271
AS9051-270
AS47448-270
AS14738-269
AS16839-269
AS201461-269
AS14555-268
AS15625-268
AS35704-268
AS42223-268
AS59807-268
AS208902-268
AS31446-267

The 30 most visible of 36.

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.