AS21508
Description: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 US
Registry: LEVEL3
aut-num: AS21508
descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 US
admin-c: IC161-ARIN
tech-c: IC161-ARIN
remarks: First Pass
mnt-by: MNT-CMCS
changed: tony_tauber@spam-free.cable.comcast.com 20070517
source: LEVEL3
Upstream AS Paths
50 unique paths, avg length 2.8
AS Looking Glass
Upstream paths (matching graph above)
All 50 Upstream Paths
Complete list of all observed paths
Prefixes
92 prefixes originated by AS21508
IPv4 (18)
IPv6 (74)
Hostnames in AS21508
Direct Membership
Macros that directly list AS21508 as a member:
AS-COMCAST-IBONE(132 members)
Expanded Membership
All macros containing AS21508 (directly or via nested macros): 12
Show 12 macros
AS-COMCAST-IBONE(19,609 ASNs)
AS-GLOBEINTERNET(84,477 ASNs)
AS-GLOBEINTERNET-CLIENTS(84,477 ASNs)
AS-DECIX(96,509 ASNs)
AS-NFON-DECIX-PEERS-V4(96,509 ASNs)
AS-NFON-DECIX-PEERS-V6(96,509 ASNs)
AS6695:AS-DECIX-FRA(96,509 ASNs)
AS-ST1-IXPS(96,670 ASNs)
AS-DECIX-V6(100,277 ASNs)
AS6695:AS-DECIX-FRA-V6(100,277 ASNs)
AS-CLOUD-IX-PRO(100,911 ASNs)
AS-MERKEL-PEERS(100,925 ASNs)