Observed topology
AS2907 SINET-AS Research Organization of Information and Systems, National Institute of Informatics
Transit
Upstream networks
Networks observed carrying traffic for AS2907: the AS immediately before it in a routing path. Ranked by how many paths showed the relationship, which reflects how widely it is used, not how much traffic crosses it.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS2497 | Internet Initiative Japan Inc. | Unclassified | IPv4 IPv6 | 25,277 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 5,646 |
| AS7660 | Asia Pacific Advanced Network - Japan | Unclassified | IPv4 | 665 |
| AS7575 | Australian Academic and Research Network (AARNet) | Education | IPv4 | 606 |
| AS11537 | Internet2 | Unclassified | IPv4 | 606 |
| AS1103 | SURF B.V. | Unclassified | IPv4 IPv6 | 601 |
| AS2153 | CENIC | Unclassified | IPv4 | 600 |
| AS38001 | NewMedia Express Pte Ltd | Hosting | IPv4 IPv6 | 600 |
| AS17639 | Converge ICT Solutions Inc. | Unclassified | IPv4 IPv6 | 600 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 600 |
| AS20485 | Joint Stock Company TransTeleCom | Unclassified | IPv4 | 598 |
| AS24287 | National Institute of Informatics | Unclassified | IPv4 IPv6 | 596 |
| AS8966 | EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC | Mobile | IPv4 | 595 |
| AS293 | ESnet | Unclassified | IPv4 | 593 |
Inferred from path position, not from any declaration by either party. A network appearing here is carrying these routes; whether that is a paid transit arrangement, a backup, or something else is not something routing data can tell you.
Transit
Downstream networks
Networks for which AS2907 was observed as the last hop before the origin, meaning it appears to provide them transit.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS58647 | Kagawa University | Unclassified | IPv4 | 11,543 |
| AS23793 | National Institute of Advanced Industrial Science and Technology | Unclassified | IPv4 | 1,013 |
| AS2506 | NTT business Solutions corporation | Unclassified | IPv4 IPv6 | 845 |
| AS63770 | Industrial Cyber Security Center of Excellence | Unclassified | IPv4 IPv6 | 629 |
| AS59103 | SoftEther Corporation | Unclassified | IPv4 IPv6 | 594 |
| AS3488 | Japan Aerospace Exploration Agency | Hosting | IPv4 | 574 |
| AS18124 | Okayama University of Science | Unclassified | IPv4 IPv6 | 571 |
| AS18148 | Fukuoka University | Unclassified | IPv4 IPv6 | 543 |
| AS131159 | Yamagata University | Unclassified | IPv4 IPv6 | 391 |
| AS58652 | Kochi University | Unclassified | IPv4 | 320 |
| AS151388 | SoftEther Corporation (SE-JIKKEN-AS) | Unclassified | IPv4 IPv6 | 318 |
| AS45688 | The University of Tokyo Interfaculty Initiative in Information Studies | Unclassified | IPv4 | 317 |
| AS37918 | NTT, Inc. | Unclassified | IPv4 | 317 |
| AS63783 | Chiba University of Commerce | Unclassified | IPv4 | 316 |
| AS2501 | The University of Tokyo | Education | IPv4 IPv6 | 307 |
| AS131981 | Takushoku University | Unclassified | IPv4 | 256 |
| AS23781 | Toyama University | Unclassified | IPv4 | 255 |
| AS2505 | High Energy Accelerator Research Organization, KEK | Education | IPv4 | 254 |
| AS2504 | Kyoto University | Education | IPv4 | 254 |
| AS2523 | Internet Technology Research Consortium | Unclassified | IPv4 IPv6 | 226 |
| AS18087 | Toyo University | Unclassified | IPv4 IPv6 | 225 |
| AS55379 | Hosei University | Unclassified | IPv4 IPv6 | 225 |
| AS55390 | Tokyo University of Science | Unclassified | IPv4 IPv6 | 224 |
| AS55912 | University of Kochi | Unclassified | IPv4 IPv6 | 209 |
| AS63798 | Industrial Cyber Security Center of Excellence | Unclassified | IPv4 IPv6 | 193 |
| AS38641 | Osaka Sangyo University | Unclassified | IPv4 | 192 |
| AS17687 | National University Corporation Nagoya University | Unclassified | IPv4 | 191 |
| AS7509 | Hokkaido University | Education | IPv4 | 191 |
| AS23826 | Daido University | Unclassified | IPv4 | 189 |
| AS37889 | J-PARC Center | Unclassified | IPv4 | 189 |
| AS63785 | Fukuoka University | Unclassified | IPv4 IPv6 | 179 |
| AS38635 | Keio University | Unclassified | IPv4 IPv6 | 172 |
| AS24261 | Mie University | Unclassified | IPv4 | 169 |
| AS37917 | University of Tsukuba | Unclassified | IPv4 | 164 |
| AS18267 | Doshisha University | Unclassified | IPv4 IPv6 | 161 |
| AS55904 | KOGAKUIN University | Unclassified | IPv4 IPv6 | 161 |
| AS9367 | Institute of Science Tokyo | Education | IPv4 IPv6 | 157 |
| AS17701 | Seinan Gakuin University | Unclassified | IPv4 IPv6 | 150 |
| AS4729 | Japan Atomic Energy Agency | Unclassified | IPv4 | 128 |
| AS59104 | Soka University | Unclassified | IPv4 | 128 |
| AS4730 | Osaka University | Education | IPv4 | 128 |
| AS17523 | Aoyama Gakuin University | Unclassified | IPv4 | 128 |
| AS131919 | Meiji University | Unclassified | IPv4 | 128 |
| AS59096 | Meiji Gakuin University | Unclassified | IPv4 | 128 |
| AS150358 | Tokyo Woman's Christian University | Unclassified | IPv4 | 126 |
| AS18091 | Teikyo University | Unclassified | IPv4 | 126 |
| AS18123 | INAOKI EDUCATIONAL INSTITUTION | Unclassified | IPv4 IPv6 | 125 |
| AS131158 | Nara Institute of Science and Technology, National University Corporation | Unclassified | IPv4 IPv6 | 123 |
| AS9355 | National Institute of Information and Communications Technology | Education | IPv4 IPv6 | 122 |
| AS9591 | National Institute for Fusion Science | Education | IPv4 | 113 |
| AS55909 | National Institute of Technology, Kochi College | Unclassified | IPv4 IPv6 | 100 |
| AS58785 | Tohoku Gakuin University | Unclassified | IPv4 IPv6 | 97 |
| AS131895 | Okinawa Institute of science and technology | Unclassified | IPv4 IPv6 | 96 |
| AS24287 | National Institute of Informatics | Unclassified | IPv4 IPv6 | 94 |
| AS152870 | Incorporated Educational Institution Kaichigakuen | Unclassified | IPv4 IPv6 | 87 |
| AS59115 | CYBERDYNE Inc. | Unclassified | IPv4 IPv6 | 82 |
| AS131946 | MUSASHINO UNIVERSITY E.F. | Unclassified | IPv4 | 71 |
| AS152861 | Chiba Institute of Technology | Unclassified | IPv4 | 64 |
| AS2508 | Kyushu University | Education | IPv4 | 64 |
| AS17960 | University of the Ryukyus | Unclassified | IPv4 | 64 |
| AS23807 | Ritsumeikan University | Unclassified | IPv4 | 64 |
| AS55380 | Kanazawa University | Unclassified | IPv4 | 64 |
| AS23615 | University of Shizuoka | Unclassified | IPv4 | 64 |
| AS63777 | National Institutes of Natural Sciences National Astronomical Observatory of JAPAN | Unclassified | IPv4 | 64 |
| AS17946 | Gifu University | Unclassified | IPv4 | 64 |
| AS23623 | Chuo University | Unclassified | IPv4 | 64 |
| AS24254 | Kyoto Sangyo University | Unclassified | IPv4 | 64 |
| AS18128 | RIKEN | Unclassified | IPv4 | 64 |
| AS45685 | Rikkyo Gakuin Rikkyo University | Unclassified | IPv4 | 64 |
| AS37910 | Chubu University | Unclassified | IPv4 | 64 |
| AS18276 | Kansai University | Unclassified | IPv4 | 64 |
| AS2513 | Japan Science and Technology Agency | Unclassified | IPv4 | 64 |
| AS58784 | Rissho University | Unclassified | IPv4 | 64 |
| AS146980 | Tokyo Metropolitan College of Industrial Technology Infomation System Engineering Course | Unclassified | IPv4 IPv6 | 64 |
| AS131961 | Dokkyo University | Unclassified | IPv4 | 63 |
| AS151390 | RUTILEA, Inc. | Unclassified | IPv4 | 63 |
| AS151350 | NIPPON COMMUNICATIONS INC. | Education | IPv4 | 63 |
| AS55373 | Foundation for Biomedical Research and Innovation at Kobe | Unclassified | IPv4 | 63 |
| AS18279 | Bukkyo University | Unclassified | IPv4 | 63 |
| AS24264 | Kanazawa Institute of Technology | Unclassified | IPv4 | 57 |
| AS24268 | National University Corporation Shizuoka University | Unclassified | IPv4 | 57 |
| AS24260 | Board of trusty: Kinjo-Gakuen | Unclassified | IPv4 | 54 |
| AS17956 | WASEDA University | Unclassified | IPv4 | 54 |
| AS59111 | Akita International University | Unclassified | IPv4 IPv6 | 53 |
| AS18125 | Tsukuba Business-Academia Cooperation Support Center, Agriculture, Forestry and Fisheries Research Council Secretariat, Ministry of Agriculture, Forestry and Fisheries | Unclassified | IPv4 | 46 |
| AS10014 | Nihon University | Education | IPv4 IPv6 | 41 |
| AS59091 | Kanagawa Institute of Technology | Unclassified | IPv4 | 23 |
| AS18076 | Institute of Advanced Media Arts and Sciences | Unclassified | IPv4 | 21 |
| AS17944 | Japan Weather Association | Unclassified | IPv4 | 20 |
| AS9991 | Hiroshima Shudo University | Education | IPv4 IPv6 | 20 |
| AS131897 | National University Corporation ,Ehime University | Unclassified | IPv4 | 19 |
| AS7660 | Asia Pacific Advanced Network - Japan | Unclassified | IPv4 IPv6 | 18 |
| AS17932 | Japan Advanced Institute of Science and Technology | Unclassified | IPv4 IPv6 | 17 |
| AS150357 | University of Nagasaki | Unclassified | IPv4 IPv6 | 13 |
| AS24248 | Wakayama University | Unclassified | IPv4 | 10 |
| AS55910 | Shibaura Institute of Technology | Unclassified | IPv4 IPv6 | 9 |
Adjacency
Adjacent networks
Every AS seen directly next to AS2907 in a routing path, in either direction.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS2497 | Internet Initiative Japan Inc. | Unclassified | IPv4 IPv6 | 43,039 |
| AS58647 | Kagawa University | Unclassified | IPv4 | 11,543 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 10,455 |
| AS7660 | Asia Pacific Advanced Network - Japan | Unclassified | IPv4 IPv6 | 1,153 |
| AS24287 | National Institute of Informatics | Unclassified | IPv4 IPv6 | 1,131 |
| AS1103 | SURF B.V. | Unclassified | IPv4 IPv6 | 1,095 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 1,082 |
| AS7575 | Australian Academic and Research Network (AARNet) | Education | IPv4 | 1,081 |
| AS17639 | Converge ICT Solutions Inc. | Unclassified | IPv4 IPv6 | 1,077 |
| AS2153 | CENIC | Unclassified | IPv4 | 1,070 |
| AS11537 | Internet2 | Unclassified | IPv4 | 1,066 |
| AS38001 | NewMedia Express Pte Ltd | Hosting | IPv4 IPv6 | 1,043 |
| AS293 | ESnet | Unclassified | IPv4 | 1,041 |
| AS23793 | National Institute of Advanced Industrial Science and Technology | Unclassified | IPv4 | 1,013 |
| AS8966 | EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC | Mobile | IPv4 | 1,001 |
| AS2506 | NTT business Solutions corporation | Unclassified | IPv4 IPv6 | 845 |
| AS20485 | Joint Stock Company TransTeleCom | Unclassified | IPv4 | 844 |
| AS63798 | Industrial Cyber Security Center of Excellence | Unclassified | IPv4 IPv6 | 728 |
| AS59103 | SoftEther Corporation | Unclassified | IPv4 IPv6 | 678 |
| AS63770 | Industrial Cyber Security Center of Excellence | Unclassified | IPv4 IPv6 | 629 |
| AS3488 | Japan Aerospace Exploration Agency | Hosting | IPv4 | 574 |
| AS18124 | Okayama University of Science | Unclassified | IPv4 | 570 |
| AS18148 | Fukuoka University | Unclassified | IPv4 IPv6 | 543 |
| AS131159 | Yamagata University | Unclassified | IPv4 IPv6 | 391 |
| AS58652 | Kochi University | Unclassified | IPv4 | 320 |
| AS151388 | SoftEther Corporation (SE-JIKKEN-AS) | Unclassified | IPv4 IPv6 | 318 |
| AS37918 | NTT, Inc. | Unclassified | IPv4 | 317 |
| AS45688 | The University of Tokyo Interfaculty Initiative in Information Studies | Unclassified | IPv4 | 317 |
| AS63783 | Chiba University of Commerce | Unclassified | IPv4 | 316 |
| AS2501 | The University of Tokyo | Education | IPv4 IPv6 | 307 |
| AS131981 | Takushoku University | Unclassified | IPv4 | 256 |
| AS23781 | Toyama University | Unclassified | IPv4 | 255 |
| AS2504 | Kyoto University | Education | IPv4 | 254 |
| AS2505 | High Energy Accelerator Research Organization, KEK | Education | IPv4 | 254 |
| AS2523 | Internet Technology Research Consortium | Unclassified | IPv4 IPv6 | 226 |
| AS18087 | Toyo University | Unclassified | IPv4 IPv6 | 225 |
| AS55379 | Hosei University | Unclassified | IPv4 IPv6 | 225 |
| AS55390 | Tokyo University of Science | Unclassified | IPv4 IPv6 | 224 |
| AS55912 | University of Kochi | Unclassified | IPv4 IPv6 | 209 |
| AS38641 | Osaka Sangyo University | Unclassified | IPv4 | 192 |
| AS17687 | National University Corporation Nagoya University | Unclassified | IPv4 | 191 |
| AS7509 | Hokkaido University | Education | IPv4 | 191 |
| AS23826 | Daido University | Unclassified | IPv4 | 189 |
| AS37889 | J-PARC Center | Unclassified | IPv4 | 189 |
| AS63785 | Fukuoka University | Unclassified | IPv4 IPv6 | 179 |
| AS38635 | Keio University | Unclassified | IPv4 IPv6 | 172 |
| AS24261 | Mie University | Unclassified | IPv4 | 169 |
| AS37917 | University of Tsukuba | Unclassified | IPv4 | 164 |
| AS18267 | Doshisha University | Unclassified | IPv4 IPv6 | 161 |
| AS55904 | KOGAKUIN University | Unclassified | IPv4 IPv6 | 161 |
| AS9367 | Institute of Science Tokyo | Education | IPv4 IPv6 | 157 |
| AS17701 | Seinan Gakuin University | Unclassified | IPv4 IPv6 | 150 |
| AS4729 | Japan Atomic Energy Agency | Unclassified | IPv4 | 128 |
| AS4730 | Osaka University | Education | IPv4 | 128 |
| AS59096 | Meiji Gakuin University | Unclassified | IPv4 | 128 |
| AS59104 | Soka University | Unclassified | IPv4 | 128 |
| AS17523 | Aoyama Gakuin University | Unclassified | IPv4 | 128 |
| AS131919 | Meiji University | Unclassified | IPv4 | 128 |
| AS18091 | Teikyo University | Unclassified | IPv4 | 126 |
| AS150358 | Tokyo Woman's Christian University | Unclassified | IPv4 | 126 |
| AS131158 | Nara Institute of Science and Technology, National University Corporation | Unclassified | IPv4 IPv6 | 123 |
| AS18123 | INAOKI EDUCATIONAL INSTITUTION | Unclassified | IPv4 | 122 |
| AS9355 | National Institute of Information and Communications Technology | Education | IPv4 IPv6 | 122 |
| AS9591 | National Institute for Fusion Science | Education | IPv4 | 113 |
| AS55909 | National Institute of Technology, Kochi College | Unclassified | IPv4 IPv6 | 100 |
| AS58785 | Tohoku Gakuin University | Unclassified | IPv4 IPv6 | 97 |
| AS131895 | Okinawa Institute of science and technology | Unclassified | IPv4 IPv6 | 96 |
| AS152870 | Incorporated Educational Institution Kaichigakuen | Unclassified | IPv4 IPv6 | 87 |
| AS59115 | CYBERDYNE Inc. | Unclassified | IPv4 IPv6 | 82 |
| AS131946 | MUSASHINO UNIVERSITY E.F. | Unclassified | IPv4 | 71 |
| AS152861 | Chiba Institute of Technology | Unclassified | IPv4 | 64 |
| AS2508 | Kyushu University | Education | IPv4 | 64 |
| AS45685 | Rikkyo Gakuin Rikkyo University | Unclassified | IPv4 | 64 |
| AS37910 | Chubu University | Unclassified | IPv4 | 64 |
| AS18276 | Kansai University | Unclassified | IPv4 | 64 |
| AS24254 | Kyoto Sangyo University | Unclassified | IPv4 | 64 |
| AS2513 | Japan Science and Technology Agency | Unclassified | IPv4 | 64 |
| AS17960 | University of the Ryukyus | Unclassified | IPv4 | 64 |
| AS23807 | Ritsumeikan University | Unclassified | IPv4 | 64 |
| AS58784 | Rissho University | Unclassified | IPv4 | 64 |
| AS23623 | Chuo University | Unclassified | IPv4 | 64 |
| AS17946 | Gifu University | Unclassified | IPv4 | 64 |
| AS55380 | Kanazawa University | Unclassified | IPv4 | 64 |
| AS63777 | National Institutes of Natural Sciences National Astronomical Observatory of JAPAN | Unclassified | IPv4 | 64 |
| AS23615 | University of Shizuoka | Unclassified | IPv4 | 64 |
| AS18128 | RIKEN | Unclassified | IPv4 | 64 |
| AS151390 | RUTILEA, Inc. | Unclassified | IPv4 | 63 |
| AS131961 | Dokkyo University | Unclassified | IPv4 | 63 |
| AS55373 | Foundation for Biomedical Research and Innovation at Kobe | Unclassified | IPv4 | 63 |
| AS18279 | Bukkyo University | Unclassified | IPv4 | 63 |
| AS146980 | Tokyo Metropolitan College of Industrial Technology Infomation System Engineering Course | Unclassified | IPv4 | 63 |
| AS151350 | NIPPON COMMUNICATIONS INC. | Education | IPv4 | 63 |
| AS24268 | National University Corporation Shizuoka University | Unclassified | IPv4 | 57 |
| AS24264 | Kanazawa Institute of Technology | Unclassified | IPv4 | 57 |
| AS17956 | WASEDA University | Unclassified | IPv4 | 54 |
| AS24260 | Board of trusty: Kinjo-Gakuen | Unclassified | IPv4 | 54 |
| AS59111 | Akita International University | Unclassified | IPv4 IPv6 | 53 |
| AS18125 | Tsukuba Business-Academia Cooperation Support Center, Agriculture, Forestry and Fisheries Research Council Secretariat, Ministry of Agriculture, Forestry and Fisheries | Unclassified | IPv4 | 46 |
| AS10014 | Nihon University | Education | IPv4 IPv6 | 41 |
| AS59091 | Kanagawa Institute of Technology | Unclassified | IPv4 | 23 |
| AS18076 | Institute of Advanced Media Arts and Sciences | Unclassified | IPv4 | 21 |
| AS17944 | Japan Weather Association | Unclassified | IPv4 | 20 |
| AS9991 | Hiroshima Shudo University | Education | IPv4 | 19 |
| AS131897 | National University Corporation ,Ehime University | Unclassified | IPv4 | 19 |
| AS17932 | Japan Advanced Institute of Science and Technology | Unclassified | IPv4 | 15 |
| AS24248 | Wakayama University | Unclassified | IPv4 | 10 |
| AS150357 | University of Nagasaki | Unclassified | IPv4 | 10 |
| AS55910 | Shibaura Institute of Technology | Unclassified | IPv4 | 7 |
| AS2500 | WIDE Project | Unclassified | IPv4 | 5 |
| AS9002 | RETN Limited | Unclassified | IPv4 | 4 |
Adjacency is not the same as peering. Being next to each other in a path covers paid transit, settlement-free peering and customer connections alike, and routing data cannot distinguish them. Treat this as "these networks exchange routes", nothing more specific.
Interconnection
Exchange presence
Internet exchanges where Packet Clearing House has a port recorded for AS2907, largest fabric first. An exchange is shared switching where networks interconnect directly rather than paying a transit provider to carry traffic between them, so turning up at one is a deliberate choice about how this network wants to be reached. Each name opens that exchange's own page, with its peering LANs and every other network recorded on it. Recorded at 5 exchanges across 1 country and 1 region.
| Exchange | Location | Their address | Member ports |
|---|---|---|---|
| BroadBand Internet eXchange Tokyo | Tokyo, Japan | 101.203.89.206 | 359 |
| JPIX Tokyo | Tokyo, Japan | 210.171.224.150 | 259 |
| BroadBand Internet eXchange Osaka | Osaka, Japan | 218.100.9.134 | 132 |
| Equinix Internet Exchange Tokyo | Tokyo, Japan | 2001:de8:5::2907:1 | 124 |
| JPIX Osaka | Osaka, Japan | 103.246.232.150 | 114 |
Unlike the tables above, this is recorded rather than inferred. An address on a peering LAN is at that exchange by definition. Two carve-outs all the same. Member ports counts every participant at the exchange, not this network's ports, so read it as a size proxy. And an absent exchange means PCH has no record of it, not that the network is not there.
Provenance
Where this comes from
Derived from routing tables collected at 2026-08-08 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.02M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.
Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.
Exchange presence comes from a separate dataset: the directory collected 2026-08-09 by Packet Clearing House (https://www.pch.net/ixp/data), covering 1,327 exchanges and 93,164 recorded member ports, licensed CC BY-NC-SA 3.0.
PeeringDB is the better-known directory and is deliberately not the source here: its acceptable-use policy forbids the bulk storage this needs. The two answer different questions anyway. PeeringDB reports what an operator declares about itself; this reports what PCH has recorded.