Upstream networks
AS3573 ACCENTURE
Unclassified ARIN
Transit
Upstream networks
Networks observed carrying traffic for AS3573: 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 |
|---|---|---|---|---|
| AS8220 | COLT Technology Services Group Limited | Hosting | IPv4 IPv6 | 2,340 |
| AS7018 | AT&T Enterprises, LLC | Residential | IPv4 IPv6 | 2,229 |
| AS701 | Verizon Business | Residential | IPv4 IPv6 | 1,890 |
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 IPv6 | 1,455 |
| AS3320 | Deutsche Telekom AG | Mobile | IPv4 IPv6 | 755 |
| AS4637 | Telstra Global | Unclassified | IPv4 IPv6 | 584 |
| AS4826 | Vocus Connect International Backbone | Unclassified | IPv4 IPv6 | 476 |
| AS13237 | euNetworks GmbH | Unclassified | IPv4 IPv6 | 382 |
| AS12552 | GlobalConnect AB | Unclassified | IPv4 IPv6 | 375 |
| AS174 | Cogent Communications, LLC | Transit | IPv6 | 327 |
| AS2685 | AT&T Enterprises, LLC | Unclassified | IPv6 | 313 |
| AS2687 | AT&T Enterprises, LLC | Unclassified | IPv4 IPv6 | 299 |
| AS12874 | Fastweb SpA | Residential | IPv4 IPv6 | 271 |
| AS2856 | British Telecommunications Limited | Residential | IPv6 | 267 |
| AS262197 | MILLICOM CABLE COSTA RICA S.A. | Unclassified | IPv4 IPv6 | 242 |
| AS3269 | Telecom Italia S.p.A. | Residential | IPv4 IPv6 | 241 |
| AS4713 | NTT DOCOMO BUSINESS,Inc. | Residential | IPv4 IPv6 | 224 |
| AS702 | Verizon Business | Unclassified | IPv4 IPv6 | 219 |
| AS4755 | TATA Communications formerly VSNL is Leading ISP | Hosting | IPv4 IPv6 | 207 |
| AS2516 | KDDI CORPORATION | Mobile | IPv4 IPv6 | 175 |
| AS1221 | Telstra Limited | Mobile | IPv4 IPv6 | 171 |
| AS7303 | Telecom Argentina S.A. | Mobile | IPv4 IPv6 | 152 |
| AS11664 | Techtel LMDS Comunicaciones Interactivas S.A. | Residential | IPv6 | 136 |
| AS6461 | Zayo Bandwidth | Transit | IPv6 | 128 |
| AS14080 | Telmex Colombia S.A. | Residential | IPv6 | 128 |
| AS8218 | Zayo Infrastructure France SA | Unclassified | IPv4 IPv6 | 125 |
| AS28716 | Retelit Digital Services S.p.A. | Unclassified | IPv4 IPv6 | 125 |
| AS262202 | Telefonica de Costa Rica TC, SA | Hosting | IPv4 IPv6 | 122 |
| AS12213 | Centersquare | Hosting | IPv4 | 120 |
| AS3303 | Swisscom (Schweiz) AG | Residential | IPv6 | 105 |
| AS209 | CenturyLink Communications, LLC | Residential | IPv6 | 102 |
| AS9790 | Two Degrees Networks Limited | Residential | IPv4 IPv6 | 101 |
| AS5400 | British Telecommunications Limited | Unclassified | IPv6 | 99 |
| AS9186 | INFOCOMUNICACOES, S.A. | Unclassified | IPv6 | 99 |
| AS12357 | VODAFONE ESPANA S.A.U. | Mobile | IPv6 | 99 |
| AS45458 | SBN-ISP/AWN-ISP and SBN-NIX/AWN-NIX | Unclassified | IPv4 IPv6 | 96 |
| AS4657 | StarHub Ltd | Residential | IPv4 IPv6 | 95 |
| AS7474 | SingTel Optus Pty Ltd | Unclassified | IPv4 IPv6 | 92 |
| AS30844 | Liquid Telecommunications Ltd | Unclassified | IPv4 IPv6 | 92 |
| AS9498 | BHARTI Airtel Ltd. | Mobile | IPv4 IPv6 | 77 |
| AS4788 | TM TECHNOLOGY SERVICES SDN. BHD. | Mobile | IPv6 | 74 |
| AS12741 | Netia SA | Residential | IPv6 | 74 |
| AS9255 | Singapore Telecom | Unclassified | IPv6 | 72 |
| AS9381 | HKBN Enterprise Solutions HK Limited | Hosting | IPv6 | 70 |
| AS4768 | One New Zealand Group Limited | Residential | IPv4 IPv6 | 67 |
| AS55666 | PT Media Sarana Data | Residential | IPv4 | 67 |
| AS1680 | Cellcom Fixed Line Communication L.P | Mobile | IPv6 | 66 |
| AS2860 | NOS COMUNICACOES, S.A. | Residential | IPv6 | 66 |
| AS3257 | GTT Communications Inc. | Transit | IPv6 | 66 |
| AS6799 | Ote SA (Hellenic Telecommunications Organisation) | Residential | IPv6 | 66 |
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 2026-10-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.22M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.