{"announced_v4":0,"announced_v6":0,"asn":21508,"canonical_url":"https://bgptree.com/as/21508","classification":"Transit Provider / Regional ISP","compliance":"DPDP Act 2023, Jurisdiction of Mumbai, Maharashtra, INDIA","country":"US","data_sources":["RIPE NCC RIS","PeeringDB","RouteViews","APNIC/ARIN/RIPE/LACNIC/AFRINIC RDAP"],"description":"Comcast Cable Communications, LLC","direct_peers_count":0,"downstreams_count":50,"name":"COMCAST-21508 - Comcast Cable Communications, LLC","neighbors":[{"source_asn":21508,"target_asn":7922,"target_name":"COMCAST-7922 - Comcast Cable Communications, LLC","target_country":"US","protocol":"both","relation_type":"upstream","v4_peers":18033,"v6_peers":21190,"peer_count":39223,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":40641,"target_name":"MGWTEL - MGW Telephone Company, Inc.","target_country":"US","protocol":"both","relation_type":"downstream","v4_peers":2151,"v6_peers":11,"peer_count":2162,"last_observed":"2026-11-02T18:37:21Z"},{"source_asn":21508,"target_asn":15297,"target_name":"EPLUS-ASN - EPLUS, Inc.","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":987,"v6_peers":0,"peer_count":987,"last_observed":"2026-11-03T00:55:38Z"},{"source_asn":21508,"target_asn":13335,"target_name":"CLOUDFLARENET","target_country":"US","protocol":"both","relation_type":"downstream","v4_peers":332,"v6_peers":331,"peer_count":663,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":396083,"target_name":"ARVUS-160-84 - Framatome Inc.","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":660,"v6_peers":0,"peer_count":660,"last_observed":"2026-11-03T01:41:11Z"},{"source_asn":21508,"target_asn":54113,"target_name":"FASTLY - Fastly, Inc.","target_country":"US","protocol":"both","relation_type":"downstream","v4_peers":330,"v6_peers":330,"peer_count":660,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":400114,"target_name":"","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":659,"v6_peers":0,"peer_count":659,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":394058,"target_name":"TELOSC-ASH - Telos Corporation","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":658,"v6_peers":0,"peer_count":658,"last_observed":"2026-11-02T18:59:45Z"},{"source_asn":21508,"target_asn":15173,"target_name":"","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":643,"v6_peers":0,"peer_count":643,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":2134,"target_name":"Santander Global Technology and Operations, S.L.","target_country":"ES","protocol":"ipv4","relation_type":"downstream","v4_peers":545,"v6_peers":0,"peer_count":545,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":18773,"target_name":"HENRICO-AS - County of Henrico","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":480,"v6_peers":0,"peer_count":480,"last_observed":"2026-11-02T18:13:52Z"},{"source_asn":21508,"target_asn":36364,"target_name":"MHSNET - Mary Washington Hospital, Inc.","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":339,"v6_peers":0,"peer_count":339,"last_observed":"2026-11-02T23:28:38Z"},{"source_asn":21508,"target_asn":19923,"target_name":"SHENANDOAH-UNIV - Shenandoah University","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":333,"v6_peers":0,"peer_count":333,"last_observed":"2026-11-02T19:34:47Z"},{"source_asn":21508,"target_asn":394276,"target_name":"TAF - TurnAround Factor, Inc.","target_country":"US","protocol":"ipv6","relation_type":"downstream","v4_peers":0,"v6_peers":333,"peer_count":333,"last_observed":"2026-11-02T20:57:11Z"},{"source_asn":21508,"target_asn":32540,"target_name":"","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":330,"v6_peers":0,"peer_count":330,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":402549,"target_name":"","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":330,"v6_peers":0,"peer_count":330,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":54219,"target_name":"","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":330,"v6_peers":0,"peer_count":330,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":54883,"target_name":"CORVA - City of Richmond, Virginia","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":330,"v6_peers":0,"peer_count":330,"last_observed":"2026-11-02T20:47:58Z"},{"source_asn":21508,"target_asn":36040,"target_name":"YOUTUBE - Google LLC","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":329,"v6_peers":0,"peer_count":329,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":399099,"target_name":"PCPS-ASN - petersburg city public schools","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":328,"v6_peers":0,"peer_count":328,"last_observed":"2026-11-03T01:58:17Z"},{"source_asn":21508,"target_asn":399938,"target_name":"BHE-TRANSIT - Berkshire Hathaway Energy Company","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":328,"v6_peers":0,"peer_count":328,"last_observed":"2026-11-02T22:29:04Z"},{"source_asn":21508,"target_asn":14583,"target_name":"VITA-VSP-1 - Virginia Information Technologies Agency (VITA)","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":327,"v6_peers":0,"peer_count":327,"last_observed":"2026-11-02T17:55:59Z"},{"source_asn":21508,"target_asn":11739,"target_name":"CHIRISA-TECHNOLOGY-PARKS-01 - Digital Fortress, Inc.","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":321,"v6_peers":0,"peer_count":321,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":395772,"target_name":"","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":293,"v6_peers":0,"peer_count":293,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":36244,"target_name":"SVEC - Shenandoah Valley Electric Cooperative","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":285,"v6_peers":0,"peer_count":285,"last_observed":"2026-11-03T01:07:45Z"},{"source_asn":21508,"target_asn":401426,"target_name":"MARSHALL-HEALTH-NETWORK-02 - St. Mary's Medical Center, Inc.","target_country":"US","protocol":"both","relation_type":"downstream","v4_peers":148,"v6_peers":107,"peer_count":255,"last_observed":"2026-11-02T22:49:55Z"},{"source_asn":21508,"target_asn":397039,"target_name":"WORLDSTRIDES - WorldStrides","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":144,"v6_peers":0,"peer_count":144,"last_observed":"2026-11-02T21:10:37Z"},{"source_asn":21508,"target_asn":397483,"target_name":"ACBO-185 - UNIVERSAL HEALTH SERVICES","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":53,"v6_peers":0,"peer_count":53,"last_observed":"2026-11-03T01:21:55Z"},{"source_asn":21508,"target_asn":27326,"target_name":"VHSA-AS - VCU HEALTH SYSTEM AUTHORITY","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":49,"v6_peers":0,"peer_count":49,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":393613,"target_name":"VACU-ASN-1 - Virginia Credit Union, Inc.","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":43,"v6_peers":0,"peer_count":43,"last_observed":"2026-11-02T23:25:40Z"},{"source_asn":21508,"target_asn":11679,"target_name":"","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":39,"v6_peers":0,"peer_count":39,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":63468,"target_name":"","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":38,"v6_peers":0,"peer_count":38,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":19404,"target_name":"QUEST - Quest","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":30,"v6_peers":0,"peer_count":30,"last_observed":"2026-11-02T21:25:33Z"},{"source_asn":21508,"target_asn":393591,"target_name":"","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":30,"v6_peers":0,"peer_count":30,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":399607,"target_name":"","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":25,"v6_peers":0,"peer_count":25,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":17381,"target_name":"AS-WSI-ECOM-WEST - Williams-Sonoma","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":17,"v6_peers":0,"peer_count":17,"last_observed":"2026-11-02T19:47:48Z"},{"source_asn":21508,"target_asn":10794,"target_name":"BANKAMERICA","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":15,"v6_peers":0,"peer_count":15,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":396452,"target_name":"LOUDOUN-WATER - Loudoun Water","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":15,"v6_peers":0,"peer_count":15,"last_observed":"2026-11-02T23:29:14Z"},{"source_asn":21508,"target_asn":397190,"target_name":"WSP-DIGITAL - WSP","target_country":"US","protocol":"both","relation_type":"downstream","v4_peers":8,"v6_peers":7,"peer_count":15,"last_observed":"2026-11-02T23:19:46Z"},{"source_asn":21508,"target_asn":46643,"target_name":"VIRGINIA-COLLEGE-SAVINGS-PLAN - Virginia College Savings Plan","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":15,"v6_peers":0,"peer_count":15,"last_observed":"2026-11-02T20:59:33Z"},{"source_asn":21508,"target_asn":23209,"target_name":"VHDA20011260123220 - Virginia Housing Development Authority","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":14,"v6_peers":0,"peer_count":14,"last_observed":"2026-11-02T23:26:15Z"},{"source_asn":21508,"target_asn":395527,"target_name":"","target_country":"","protocol":"ipv4","relation_type":"downstream","v4_peers":14,"v6_peers":0,"peer_count":14,"last_observed":"2026-11-02T17:44:55Z"},{"source_asn":21508,"target_asn":399232,"target_name":"SETON-HOME - Seton Home Study School","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":14,"v6_peers":0,"peer_count":14,"last_observed":"2026-11-03T03:18:53Z"},{"source_asn":21508,"target_asn":62971,"target_name":"COUNTY-OF-CHESTERFIELD-VA - County of Chesterfield","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":14,"v6_peers":0,"peer_count":14,"last_observed":"2026-11-02T21:25:34Z"},{"source_asn":21508,"target_asn":54391,"target_name":"CRUTCHFIELD - Crutchfield New Media LLC","target_country":"US","protocol":"both","relation_type":"downstream","v4_peers":10,"v6_peers":2,"peer_count":12,"last_observed":"2026-11-02T21:05:05Z"},{"source_asn":21508,"target_asn":395441,"target_name":"EDGECONNEX-ASN - EdgeConneX, INC","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":10,"v6_peers":0,"peer_count":10,"last_observed":"2026-11-03T00:59:49Z"},{"source_asn":21508,"target_asn":54751,"target_name":"VEDP - Virginia Economic Development Partnership","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":9,"v6_peers":0,"peer_count":9,"last_observed":"2026-11-03T01:17:38Z"},{"source_asn":21508,"target_asn":22274,"target_name":"SMP-VIR - Standard Motor Products, Inc","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":8,"v6_peers":0,"peer_count":8,"last_observed":"2026-11-02T21:23:54Z"},{"source_asn":21508,"target_asn":398475,"target_name":"DRILLINGINFO-VIRGINIA - Drilling Info Inc.","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":8,"v6_peers":0,"peer_count":8,"last_observed":"2026-11-02T18:59:47Z"},{"source_asn":21508,"target_asn":27341,"target_name":"GFNET-AS01 - Gannet Fleming, Inc.","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":7,"v6_peers":0,"peer_count":7,"last_observed":"2026-11-02T23:19:13Z"},{"source_asn":21508,"target_asn":393415,"target_name":"LITTNET - LITTLER MENDELSON, P.C.","target_country":"US","protocol":"ipv4","relation_type":"downstream","v4_peers":1,"v6_peers":0,"peer_count":1,"last_observed":"2026-11-02T20:22:16Z"}],"owner":"SystGrid Solutions Pvt Ltd","owner_url":"https://systgrid.com","registry":"ARIN","telemetry_url":"https://bgptree.com/api/as/21508","total_peers":51,"total_prefixes":0,"updated_at":"2026-11-02T16:01:13Z","upstreams_count":1}
