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Autonomous System

AS2687 · AT&T Enterprises, LLC

Overview

AS2687 is announced on the Internet: RIPE RIS route collectors currently see 170 IPv4 prefixes and 2 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 732,928 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 41 upstream neighbours (transit providers or peers) and 62 downstream neighbours (customers or networks it carries). Its most visible upstreams are AT&T Enterprises, LLC (AS7018), BHARTI Airtel Ltd. (AS9498), and GTT Communications Inc. (AS3257). AS2687 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 1:12 AM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 32.25.0.1

The trace goes to 32.25.0.1, the first address of 32.25.0.0/16. 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 (170 prefixes)

PrefixAddresses
15.32.73.0/24256
15.32.74.0/24256
15.32.76.0/24256
15.32.77.0/24256
15.32.78.0/24256
15.32.101.0/24256
15.32.102.0/24256
15.32.108.0/24256
15.32.109.0/24256
15.32.110.0/24256
15.36.88.0/24256
15.36.93.0/24256
15.36.103.0/24256
15.36.126.0/23512
15.40.84.0/24256
15.40.85.0/24256
15.40.86.0/24256
15.40.140.0/23512
15.44.67.0/24256
15.44.68.0/221,024
15.44.72.0/24256
15.44.80.0/24256
15.44.82.0/24256
15.44.88.0/221,024
15.44.92.0/23512
15.44.94.0/24256
15.44.96.0/24256
15.44.168.0/24256
15.79.92.0/24256
15.79.93.0/24256
32.25.0.0/1665,536
32.42.128.0/1732,768
32.60.0.0/1816,384
32.64.164.0/221,024
32.103.0.0/1665,536
32.103.0.0/212,048
32.103.8.0/221,024
32.103.12.0/221,024
32.103.16.0/212,048
32.103.24.0/212,048
32.103.56.0/212,048
32.114.0.0/1665,536
32.114.232.0/23512
32.114.240.0/212,048
32.114.248.0/221,024
32.117.0.0/1665,536
32.117.136.0/24256
32.117.250.0/24256
32.118.0.0/1816,384
32.118.8.0/24256
32.118.34.0/24256
32.118.240.0/204,096
32.139.234.0/24256
32.139.236.0/24256
87.237.220.0/24256
103.211.116.0/24256
103.211.117.0/24256
122.248.128.0/1816,384
122.248.133.0/24256
122.248.148.0/23512
122.248.150.0/24256
122.248.151.0/24256
122.248.152.0/212,048
122.248.156.0/24256
122.248.160.0/221,024
122.248.169.0/24256
122.248.172.0/23512
122.248.176.0/23512
122.248.182.0/23512
122.248.184.0/23512
122.248.186.0/23512
122.248.190.0/23512
137.51.246.0/24256
137.51.247.0/24256
141.81.0.0/1665,536
141.81.190.0/24256
165.87.64.0/204,096
166.100.0.0/1665,536
168.161.109.0/24256
192.20.246.0/24256
192.48.7.0/24256
192.48.10.0/24256
192.48.29.0/24256
192.56.72.0/24256
192.56.73.0/24256
192.56.76.0/24256
192.56.77.0/24256
192.56.78.0/24256
192.56.79.0/24256
192.56.81.0/24256
192.56.84.0/24256
192.56.96.0/24256
192.56.97.0/24256
192.56.101.0/24256
192.56.108.0/24256
192.56.113.0/24256
192.56.116.0/24256
192.56.117.0/24256
192.56.118.0/24256
192.56.123.0/24256

Showing the first 100 of 170, in address order. Complete list on RIPEstat

IPv6 prefixes (2 prefixes)

Prefix
2001:d80::/32
2620:18d:d1::/48

Neighbours

Upstreams (transit or peers) (41)

ASNetworkVisibility
AS7018AT&T Enterprises, LLC5,585
AS9498BHARTI Airtel Ltd.3,965
AS3257GTT Communications Inc.2,953
AS2686AT&T Enterprises, LLC1,214
AS6939Hurricane Electric LLC1,126
AS3491PCCW Global (HK) Ltd.865
AS33891Core-Backbone GmbH243
AS8220COLT Technology Services Group Limited215
AS20485Joint Stock Company TransTeleCom204
AS2497Internet Initiative Japan Inc.116
AS7473Singapore Telecommunications Ltd111
AS9002RETN Limited69
AS35280F5 Networks SARL67
AS8966-64
AS8359MTS PJSC61
AS9304HGC Global Communications Limited59
AS15802Emirates Integrated Telecommunications Company PJSC59
AS132132-59
AS1299Arelion Sweden AB49
AS17557Pakistan Telecommunication Company Limited49
AS286GTT Communications Inc.46
AS64073Vetta Group20
AS15412Flag Telecom UK Limited14
AS6453TATA COMMUNICATIONS (AMERICA) INC12
AS20326TeraSwitch Networks Inc.12
AS1221Telstra Limited10
AS4134No.31,Jin-rong Street9
AS23764CTGNet9
AS4713NTT DOCOMO BUSINESS,Inc.6
AS2518BIGLOBE Inc.4

The 30 most visible of 41.

Downstreams (customers) (62)

ASNetworkVisibility
AS25888HP Inc.1,711
AS30337Deloitte Services LP667
AS3918Shell Information Technology International B.V.591
AS4249Eli Lilly and Company571
AS19239KLA Corporation524
AS14381Caterpillar, Inc.514
AS3738State Street Bank and Trust Company510
AS4797Wipro Spectramind Services Pvt Ltd (BPO -INDIA)499
AS19197Stefanini, Inc.497
AS24126Unisys AsiaPac Intranet Access to Internet490
AS17802-374
AS3614-356
AS3573Accenture LLP341
AS2030-320
AS13778-278
AS4468-275
AS6253-275
AS2631-273
AS16466-269
AS12422-266
AS33619-266
AS36180-265
AS11857-263
AS58664-263
AS17825-262
AS19419-262
AS35923-262
AS38564-262
AS40703Turner Broadcasting System, Inc.262
AS59248-262

The 30 most visible of 62.

22 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.