Upstream networks
AS21453 FLEX-AS
Residential RIPE Cable/DSL/ISP
Transit
Upstream networks
Networks observed carrying traffic for AS21453: 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 |
|---|---|---|---|---|
| AS12389 | PJSC Rostelecom | Residential | IPv4 IPv6 | 367 |
| AS35598 | INETCOM CARRIER LLC | Unclassified | IPv4 | 202 |
| AS20764 | CJSC RASCOM | Unclassified | IPv4 | 110 |
| AS1299 | Arelion Sweden AB | Transit | IPv4 IPv6 | 105 |
| AS57304 | JSC "RetnNet" | Unclassified | IPv4 IPv6 | 86 |
| AS28917 | Fiord Networks, UAB | Unclassified | IPv4 IPv6 | 83 |
| AS8641 | LLC "Nauka-Svyaz" | Unclassified | IPv4 IPv6 | 46 |
| AS62255 | BiMajLink d.o.o. | Unclassified | IPv4 | 36 |
| AS29076 | Citytelecom LLC | Hosting | IPv6 | 29 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 19 |
| AS9002 | RETN Limited | Unclassified | IPv4 | 17 |
| AS37721 | Virtual Technologies & Solutions | Residential | IPv4 | 17 |
| AS49673 | Truenetwork LLC | Unclassified | IPv4 | 17 |
| AS208972 | GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI | Unclassified | IPv4 | 17 |
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 2026-10-21 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.14M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.