Upstream networks
AS63199 CDSC-AS1
Hosting ARIN
Transit
Upstream networks
Networks observed carrying traffic for AS63199: 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 |
|---|---|---|---|---|
| AS174 | Cogent Communications, LLC | Transit | IPv4 IPv6 | 6,185 |
| AS1299 | Arelion Sweden AB | Transit | IPv4 IPv6 | 4,745 |
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 IPv6 | 2,668 |
| AS6453 | TATA COMMUNICATIONS (AMERICA) INC | Transit | IPv4 IPv6 | 2,540 |
| AS17408 | AboveNet Communications Taiwan | Unclassified | IPv4 IPv6 | 1,873 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 1,845 |
| AS3257 | GTT Communications Inc. | Transit | IPv4 IPv6 | 1,777 |
| AS21859 | Zenlayer Inc | Hosting | IPv4 IPv6 | 1,144 |
| AS3491 | PCCW Global (HK) Ltd. | Transit | IPv4 IPv6 | 1,045 |
| AS41095 | IPTP LTD | Hosting | IPv4 IPv6 | 784 |
| AS9286 | KINX | Hosting | IPv4 | 604 |
| AS12956 | TELEFONICA GLOBAL SOLUTIONS SL | Transit | IPv4 | 510 |
| AS7195 | EDGEUNO S.A.S | Unclassified | IPv4 IPv6 | 455 |
| AS17676 | SoftBank Corp. | Mobile | IPv4 IPv6 | 437 |
| AS2914 | NTT America, Inc. | Transit | IPv4 IPv6 | 400 |
| AS4657 | StarHub Ltd | Residential | IPv4 | 393 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 287 |
| AS4788 | TM TECHNOLOGY SERVICES SDN. BHD. | Mobile | IPv4 | 249 |
| AS17639 | Converge ICT Solutions Inc. | Unclassified | IPv4 IPv6 | 217 |
| AS34549 | meerfarbig GmbH & Co. KG | Hosting | IPv4 IPv6 | 208 |
| AS9002 | RETN Limited | Unclassified | IPv4 | 196 |
| AS20485 | Joint Stock Company TransTeleCom | Unclassified | IPv4 | 90 |
| AS38001 | NewMedia Express Pte Ltd | Hosting | IPv4 IPv6 | 80 |
| AS33891 | Core-Backbone GmbH | Hosting | IPv4 | 72 |
| AS4635 | Hong Kong Internet Exchange--Route Server 1 | Unclassified | IPv4 | 56 |
| AS34019 | Hivane Association | Unclassified | IPv4 IPv6 | 54 |
| AS37989 | DCS1 Pte. Ltd. | Hosting | IPv4 | 54 |
| AS48362 | Stadtwerke Feldkirch | Residential | IPv4 IPv6 | 54 |
| AS37721 | Virtual Technologies & Solutions | Residential | IPv4 IPv6 | 53 |
| AS1836 | green.ch AG | Residential | IPv4 IPv6 | 51 |
| AS12389 | PJSC Rostelecom | Residential | IPv4 | 51 |
| AS18403 | FPT Telecom Company | Residential | IPv4 IPv6 | 51 |
| AS12859 | BIT BV | Hosting | IPv4 IPv6 | 50 |
| AS37100 | SEACOM Limited | Unclassified | IPv4 | 50 |
| AS6797 | GlobalConnect AB | Unclassified | IPv4 | 49 |
| AS12779 | IT.Gate S.p.A. | Unclassified | IPv4 | 47 |
| AS7473 | Singapore Telecommunications Ltd | Unclassified | IPv4 | 42 |
| AS212024 | Marc Schmitt | Unclassified | IPv4 IPv6 | 42 |
| AS140951 | IPTP Networks | Unclassified | IPv4 IPv6 | 32 |
| AS9957 | KINX | Hosting | IPv4 IPv6 | 24 |
| AS9318 | SK Broadband Co Ltd | Unclassified | IPv4 | 22 |
| AS14907 | Wikimedia Foundation Inc. | Hosting | IPv4 IPv6 | 18 |
| AS132132 | MyRepublic Ltd. | Residential | IPv4 | 13 |
| AS8966 | EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC | Mobile | IPv4 | 11 |
| AS9930 | TIME dotCom Berhad No. 14, Jalan Majistret U1/26 Hicom Glenmarie Industrial Park 40150 Shah Alam Selangor, Malaysia | Unclassified | IPv4 | 8 |
| AS29632 | Netassist International EOOD | Unclassified | IPv6 | 8 |
| AS293 | ESnet | Unclassified | IPv4 | 6 |
| AS56662 | Marcin Gondek | Unclassified | IPv6 | 4 |
| AS213241 | TECHIT.BE SRL | Residential | IPv6 | 4 |
| AS3216 | PJSC "Vimpelcom" | Mobile | IPv4 | 1 |
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.
Derived from routing tables collected at 2026-10-15 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.09M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.