Downstream networks
AS21508 COMCAST-21508
Unclassified DROP-listed space ARIN Cable/DSL/ISP
Transit
Downstream networks
Networks for which AS21508 was observed as the last hop before the origin, meaning it appears to provide them transit.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS40641 | MGW Telephone Company, Inc. | Unclassified | IPv4 IPv6 | 400 |
| AS15297 | EPLUS, Inc. | Unclassified | IPv4 | 177 |
| AS11679 | Stihl Inc. | Unclassified | IPv4 | 162 |
| AS400114 | Apogee Telecom Inc. | Unclassified | IPv4 | 118 |
| AS396083 | Framatome Inc. | Unclassified | IPv4 | 117 |
| AS394058 | Telos Corporation | Unclassified | IPv4 | 114 |
| AS15173 | Newmarket Corporation | Unclassified | IPv4 | 112 |
| AS18773 | County of Henrico | Unclassified | IPv4 | 105 |
| AS2134 | Santander Global Technology and Operations, S.L. | Unclassified | IPv4 | 101 |
| AS13335 | Cloudflare, Inc. | Hosting | IPv4 IPv6 | 92 |
| AS54113 | Fastly, Inc. | Hosting | IPv4 IPv6 | 91 |
| AS19923 | Shenandoah University | Unclassified | IPv4 | 77 |
| AS36364 | Mary Washington Hospital, Inc. | Unclassified | IPv4 | 64 |
| AS32540 | HP Hood | Unclassified | IPv4 | 59 |
| AS36040 | Google LLC | Hosting | IPv4 | 59 |
| AS54219 | Matthews International Corporation | Unclassified | IPv4 | 59 |
| AS54883 | City of Richmond, Virginia | Unclassified | IPv4 | 59 |
| AS399099 | petersburg city public schools | Unclassified | IPv4 | 59 |
| AS402549 | Terraservers | Unclassified | IPv4 | 59 |
| AS10794 | Bank of America, National Association | Unclassified | IPv4 | 57 |
| AS11739 | Digital Fortress, Inc. | Hosting | IPv4 | 57 |
| AS395772 | Augusta Health Care, Inc | Unclassified | IPv4 | 57 |
| AS36244 | Shenandoah Valley Electric Cooperative | Unclassified | IPv4 | 53 |
| AS14583 | Virginia Information Technologies Agency (VITA) | Unclassified | IPv4 | 50 |
| AS394276 | TurnAround Factor, Inc. | Unclassified | IPv6 | 32 |
| AS401426 | St. Mary's Medical Center, Inc. | Unclassified | IPv4 IPv6 | 25 |
| AS397039 | WorldStrides | Unclassified | IPv4 | 23 |
| AS27326 | VCU HEALTH SYSTEM AUTHORITY | Unclassified | IPv4 | 21 |
| AS19404 | Quest | Unclassified | IPv4 | 16 |
| AS63468 | Infinitt North America, Inc. | Unclassified | IPv4 | 11 |
| AS397483 | UNIVERSAL HEALTH SERVICES | Unclassified | IPv4 | 10 |
| AS393591 | Gamewood Technology Group, Inc. | Unclassified | IPv4 | 9 |
| AS393613 | Virginia Credit Union, Inc. | Unclassified | IPv4 | 8 |
| AS17381 | Williams-Sonoma | Unclassified | IPv4 | 6 |
| AS23209 | Virginia Housing Development Authority | Unclassified | IPv4 | 5 |
| AS27341 | Gannet Fleming, Inc. | Unclassified | IPv4 | 5 |
| AS397190 | WSP | Unclassified | IPv4 IPv6 | 5 |
| AS54751 | Virginia Economic Development Partnership | Unclassified | IPv4 | 4 |
| AS62971 | County of Chesterfield | Unclassified | IPv4 | 4 |
| AS395527 | -Reserved AS- | Unclassified | IPv4 | 4 |
| AS399607 | Louisa County Public Schools | Unclassified | IPv4 | 4 |
| AS22274 | Standard Motor Products, Inc | Unclassified | IPv4 | 3 |
| AS46643 | Virginia College Savings Plan | Unclassified | IPv4 | 3 |
| AS396452 | Loudoun Water | Unclassified | IPv4 | 3 |
| AS399232 | Seton Home Study School | Unclassified | IPv4 | 3 |
| AS54391 | Crutchfield New Media LLC | Unclassified | IPv4 | 2 |
| AS395441 | EdgeConneX, INC | Unclassified | IPv4 | 1 |
| AS398475 | Drilling Info Inc. | Unclassified | IPv4 | 1 |
Derived from routing tables collected at 2026-10-26 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.