Skip to content

Autonomous System

AS2516 · KDDI CORPORATION

Overview

AS2516 is announced on the Internet: RIPE RIS route collectors currently see 561 IPv4 prefixes and 9 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 18,072,832 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 38 upstream neighbours (transit providers or peers) and 287 downstream neighbours (customers or networks it carries). Its most visible upstreams are BIGLOBE Inc. (AS2518), Hurricane Electric LLC (AS6939), and Arelion Sweden AB (AS1299). AS2516 was assigned by ARIN, and its registration country is Japan.

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

Trace a route to this networkOpen in the BGP viewerWHOIS of 106.128.0.1

The trace goes to 106.128.0.1, the first address of 106.128.0.0/11. 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 (561 prefixes)

PrefixAddresses
14.8.0.0/15131,072
14.10.0.0/15131,072
14.12.0.0/15131,072
14.14.0.0/1816,384
14.14.0.0/198,192
14.14.32.0/198,192
14.14.64.0/204,096
14.14.64.0/212,048
14.14.72.0/212,048
14.14.80.0/204,096
14.14.80.0/212,048
14.14.88.0/212,048
14.101.0.0/1665,536
23.226.37.0/24256
23.226.45.0/24256
23.226.222.0/24256
23.239.164.0/24256
23.239.166.0/24256
27.80.0.0/1665,536
27.81.0.0/1665,536
27.82.0.0/1665,536
27.83.0.0/1665,536
27.84.0.0/1665,536
27.85.0.0/1665,536
27.86.0.0/1665,536
27.87.0.0/1665,536
27.88.0.0/1665,536
27.89.0.0/1665,536
27.90.0.0/1665,536
27.91.0.0/1665,536
27.92.0.0/1665,536
27.93.0.0/1665,536
27.94.0.0/1665,536
27.95.0.0/1665,536
36.8.0.0/13524,288
36.255.236.0/221,024
43.246.192.0/221,024
45.116.224.0/221,024
45.118.40.0/221,024
45.121.148.0/221,024
45.124.216.0/221,024
45.126.156.0/221,024
49.132.0.0/14262,144
59.128.0.0/1816,384
59.128.64.0/198,192
59.128.96.0/198,192
59.128.128.0/1732,768
59.129.0.0/1665,536
59.131.0.0/1665,536
59.132.0.0/1665,536
59.133.0.0/1665,536
59.134.0.0/1665,536
59.135.0.0/1665,536
59.136.0.0/1665,536
59.137.0.0/1732,768
59.137.128.0/1732,768
59.138.0.0/1665,536
59.139.0.0/1665,536
59.140.0.0/1665,536
59.141.0.0/1665,536
59.142.0.0/1665,536
59.143.0.0/1665,536
59.153.140.0/221,024
61.114.0.0/1816,384
61.117.0.0/1732,768
61.117.128.0/1732,768
61.120.0.0/1732,768
61.198.128.0/1732,768
61.200.128.0/1732,768
61.202.0.0/1732,768
61.204.0.0/1732,768
61.204.128.0/1732,768
61.215.0.0/1732,768
103.6.44.0/221,024
103.13.140.0/221,024
103.37.240.0/221,024
103.51.212.0/221,024
103.65.44.0/221,024
103.90.28.0/221,024
103.228.60.0/221,024
103.232.200.0/221,024
103.233.40.0/221,024
103.234.196.0/221,024
103.235.12.0/221,024
103.240.252.0/221,024
106.72.0.0/15131,072
106.128.0.0/112,097,152
106.153.243.0/24256
106.160.0.0/1665,536
106.161.0.0/1665,536
106.162.0.0/1665,536
106.163.0.0/1665,536
106.164.0.0/1665,536
106.165.0.0/1665,536
106.166.0.0/1665,536
106.167.0.0/1665,536
106.168.0.0/1665,536
106.169.0.0/1665,536
106.170.0.0/1665,536
106.171.0.0/1665,536

Showing the first 100 of 561, in address order. Complete list on RIPEstat

IPv6 prefixes (9 prefixes)

Prefix
2001:268::/32
2001:268:fd0e::/48
2401:980::/32
2403:8300:813f::/48
2404:9200::/32
240b::/26
240b:240::/26
240f::/24
240f:100::/24

Neighbours

Upstreams (transit or peers) (38)

ASNetworkVisibility
AS2518BIGLOBE Inc.40,761
AS6939Hurricane Electric LLC22,246
AS1299Arelion Sweden AB7,286
AS3356Level 3 Parent, LLC5,276
AS3257GTT Communications Inc.5,252
AS174Cogent Communications, LLC4,865
AS6762TELECOM ITALIA SPARKLE S.p.A.2,331
AS701Verizon Business1,038
AS13030Init7 (Switzerland) Ltd.898
AS3320Deutsche Telekom AG840
AS6830LibertyGlobal Liberty Global Europe Holding B.V.496
AS33891Core-Backbone GmbH428
AS2914NTT America, Inc.356
AS12389PJSC Rostelecom327
AS3491PCCW Global (HK) Ltd.299
AS6453TATA COMMUNICATIONS (AMERICA) INC256
AS4637Telstra Global227
AS4230CLARO S.A.225
AS2500WIDE Project214
AS286GTT Communications Inc.200
AS4657StarHub Ltd182
AS577Bell Canada181
AS7473Singapore Telecommunications Ltd162
AS3303Swisscom (Schweiz) AG135
AS58453China Mobile International Limited131
AS2497Internet Initiative Japan Inc.101
AS1273IDDQD-AS80
AS15412Flag Telecom UK Limited71
AS4713NTT DOCOMO BUSINESS,Inc.20
AS8966EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC20

The 30 most visible of 38.

Downstreams (customers) (287)

ASNetworkVisibility
AS3356Level 3 Parent, LLC15,758
AS3257GTT Communications Inc.13,917
AS6762TELECOM ITALIA SPARKLE S.p.A.12,606
AS174Cogent Communications, LLC6,997
AS6453TATA COMMUNICATIONS (AMERICA) INC6,694
AS1299Arelion Sweden AB6,470
AS2518BIGLOBE Inc.5,236
AS2914NTT America, Inc.3,850
AS6939Hurricane Electric LLC3,637
AS3491PCCW Global (HK) Ltd.3,355
AS9824JCOM Co., Ltd.3,236
AS7922Comcast Cable Communications, LLC2,756
AS1273IDDQD-AS2,293
AS20940Akamai International B.V.2,179
AS701Verizon Business1,859
AS6830LibertyGlobal Liberty Global Europe Holding B.V.1,748
AS4230CLARO S.A.1,526
AS9354Community Network Center Inc.1,408
AS4637Telstra Global1,375
AS3320Deutsche Telekom AG1,350
AS15830Equinix Equinix (EMEA) Acquisition Enterprises B.V.1,094
AS8220COLT Technology Services Group Limited902
AS21433AccentureFSSC Accenture UK Limited780
AS24295-766
AS4134No.31,Jin-rong Street754
AS9370-711
AS58453China Mobile International Limited697
AS18092-642
AS7843Charter Communications Inc626
AS132203Tencent Building, Kejizhongyi Avenue614

The 30 most visible of 287.

148 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.