Upstream networks
AS19512 LYONDELL - Lyondell Chemical Company
Unclassified ARIN
Transit
Upstream networks
Networks observed carrying traffic for AS19512: 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 |
|---|---|---|---|---|
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 | 238 |
| AS9498 | BHARTI Airtel Ltd. | Mobile | IPv4 | 174 |
| AS8220 | COLT Technology Services Group Limited | Hosting | IPv4 | 146 |
| AS3491 | PCCW Global (HK) Ltd. | Transit | IPv4 | 117 |
| AS399589 | 11 11 Systems, Inc | Unclassified | IPv4 | 116 |
| AS701 | Verizon Business | Residential | IPv4 | 114 |
| AS702 | Verizon Business | Unclassified | IPv4 | 84 |
| AS703 | Verizon Business | Unclassified | IPv4 | 55 |
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 2026-11-06 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.00M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.