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AS33660

CMCS

Comcast Cable Communications, LLC

Registry

Authoritative registration data

AS number
33660
Name
CMCS
Organisation
Comcast Cable Communications, LLC
Country
—
RIR
ARIN
Registered
Source:asn:rdap retrieved

IPv4 prefixes

8

IPv6 prefixes

49

Total announced

57

Announced prefixes

Observed in BGP by route collectors, not a registry allocation list

Prefixes announced by AS33660
129.134.166.0/24 IPv4 /24 RPKI not found
129.134.167.0/24 IPv4 /24 not checked
192.16.177.0/24 IPv4 /24 RPKI not found
50.204.89.0/24 IPv4 /24 not checked
50.207.68.0/24 IPv4 /24 not checked
50.222.146.0/24 IPv4 /24 not checked
50.222.157.0/24 IPv4 /24 not checked
50.224.25.0/24 IPv4 /24 not checked
2001:559:20a::/48 IPv6 /48 not checked
2001:559:26c::/48 IPv6 /48 not checked
2001:559:29::/48 IPv6 /48 RPKI valid
2001:559:2de::/48 IPv6 /48 not checked
2001:559:2e4::/48 IPv6 /48 RPKI valid
2001:559:31a::/48 IPv6 /48 not checked
2001:559:37f::/48 IPv6 /48 RPKI valid
2001:559:3b2::/48 IPv6 /48 not checked
2001:559:3b3::/48 IPv6 /48 not checked
2001:559:3c4::/48 IPv6 /48 RPKI valid
2001:559:41a::/48 IPv6 /48 not checked
2001:559:4a7::/48 IPv6 /48 not checked
2001:559:4a9::/48 IPv6 /48 not checked
2001:559:521::/48 IPv6 /48 RPKI valid
2001:559:57f::/48 IPv6 /48 RPKI valid
2001:559:58c::/48 IPv6 /48 not checked
2001:559:5d8::/48 IPv6 /48 not checked
2001:559:808a::/48 IPv6 /48 RPKI valid
2001:559:8092::/48 IPv6 /48 not checked
2001:559:8137::/48 IPv6 /48 not checked
2001:559:819d::/48 IPv6 /48 RPKI valid
2001:559:82d4::/48 IPv6 /48 not checked
2001:559:82e8::/48 IPv6 /48 not checked
2001:559:831b::/48 IPv6 /48 RPKI valid
2001:559:8329::/48 IPv6 /48 RPKI valid
2001:559:83a6::/48 IPv6 /48 not checked
2001:559:8443::/48 IPv6 /48 RPKI valid
2001:559:8450::/48 IPv6 /48 not checked
2001:559:8460::/48 IPv6 /48 not checked
2001:559:8484::/48 IPv6 /48 RPKI valid
2001:559:8485::/48 IPv6 /48 RPKI valid
2001:559:85e0::/48 IPv6 /48 RPKI valid
2001:559:86b6::/48 IPv6 /48 RPKI valid
2001:559:8782::/48 IPv6 /48 RPKI valid
2001:559:c0ef::/48 IPv6 /48 not checked
2001:559:c154::/48 IPv6 /48 RPKI valid
2001:559:c16d::/48 IPv6 /48 not checked
2001:559:c171::/48 IPv6 /48 RPKI valid
2001:559:c173::/48 IPv6 /48 not checked
2001:559:c285::/48 IPv6 /48 not checked
2001:559:c2e6::/48 IPv6 /48 not checked
2001:559:c348::/48 IPv6 /48 RPKI valid
2001:559:c3f5::/48 IPv6 /48 not checked
2001:559:c493::/48 IPv6 /48 RPKI valid
2001:559:c54c::/48 IPv6 /48 RPKI valid
2001:559:fa::/48 IPv6 /48 not checked
2001:559:fb::/48 IPv6 /48 RPKI valid
2a03:2887:ff46::/48 IPv6 /48 not checked
2a03:2887:ff47::/48 IPv6 /48 not checked

No rows match “”.

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Source:ripestat:announced-prefixes observed

Internet Exchanges

Exchanges where this network has a listed peering LAN connection

No Internet Exchange memberships found

The exchange directory has no current membership records for this AS.

Source:peeringdb retrieved

Exchange membership means the network has a listed connection; it does not prove peering with other members.

Observed adjacencies

Networks seen next to AS33660 in BGP paths by route collectors.

Source:ripestat:asn-neighbours observed

Observed upstreams

2 networks seen before AS33660 in AS paths

Observed upstreams
Families
AS7922 COMCAST-7922 5,298 27,886
v4 v6
AS3356 LEVEL3 2,434 3,381
v4 v6

No rows match “”.

Showing – of

Observed downstreams

66 networks seen after AS33660 in AS paths

Observed downstreams
Families
AS19477 FLYINGJ 201 2,367
v4
AS54113 FASTLY 343 660
v4 v6
AS27178 HSPS-HQ 208 536
v4
AS23389 CAMPBELL-SCIENTIFIC 258 425
v4
AS11052 IHC-NET 254 358
v4
AS394662 UFAASNUM 246 354
v4 v6
AS33741 DENNIS-GROUP 254 344
v4 v6
AS393917 CVE 258 343
v4
AS29298 SUSE 242 331
v4 v6
AS394185 BOU-BANCORP 256 330
v4
AS393459 DOMOINC772 255 330
v4
AS40644 IFS 254 330
v4
AS54308 RETOUCHUP 254 330
v4
AS54977 MERITMEDICAL 254 330
v4
AS399421 EMI-HEALTH 254 330
v4
AS10786 CHARTWAY-FCU 253 330
v4
AS11396 TWC-ASN 253 330
v4
AS55251 TAXHAWK-AS 253 329
v4
AS393541 ESS-CORP 252 328
v4
AS397612 ANX 252 328
v4
AS23154 SANMINA-SCI 248 321
v4
AS399965 UTAH-JAZZ 250 320
v4
AS402114 CYPRUSCU 248 318
v4
AS54629 AFSTORES-AS 123 316
v4
AS16785 USANA-INC 236 309
v4
AS33173 MYGN-US 194 234
v4
AS400988 SLCO-ASN-01 20 187
v4
AS14149 ICONFITNESS-MAIN 68 179
v4
AS400284 LTP-USDC-FO-01 115 152
v4
AS395994 VECC911 53 134
v4
AS32602 CORP-HDQTRS 91 107
v4
AS393940 ULTRADENT-PRODUCTS 70 93
v4
AS402277 MILLERSE-DTDB-01 64 86
v4
AS19648 LDSCHURCH1 11 54
v4
AS13335 CLOUDFLARENET 19 44
v4 v6
AS17150 AFCU 13 42
v4
AS11791 SLC-IDENT-AS 12 30
v4
AS20229 MERRICK-AS 11 28
v4
AS30639 CMCFLEX 10 26
v4
AS29864 SPORTSMANS-WAREHOUSE 11 21
v4
AS63169 BMA 19 20
v4
AS53882 COMMUNITECT 15 16
v4
AS17206 MOUNTAIN-AMERICA 7 16
v4
AS55018 PRIME 12 15
v4
AS14034 SWIRE-COCA-COLA-USA-DRAPER-REDUNDANT-ACCESS 11 14
v4
AS14950 LHM-GROUP 11 14
v4
AS19831 STAMPIN 11 14
v4
AS26740 LIFEWAVE-ORG-1 11 14
v4
AS27480 MTC-CORP 11 14
v4
AS32230 PRESTIGEFINANCIAL1420 11 14
v4
AS46367 URSAS 11 14
v4
AS393546 ARUP 11 14
v4
AS393557 PCMC 11 14
v4
AS399885 EVANS-SUTHERLAND-ASN 11 14
v4
AS396033 BFDX515 7 14
v4
AS11688 LTSTREAM 10 13
v4
AS397157 10 13
v4
AS398374 NSL-ASN 6 13
v4
AS40505 APXALARM-ASN 7 10
v4
AS398140 WBGAMES-SLC 7 10
v4
AS27625 UBNT-AS 7 9
v4 v6
AS29919 29919 6 7
v4
AS29960 QUALTRICS-01 6 7
v4
AS400179 PDQCOM 5 7
v4
AS13610 PROVOCRAFT-NOVELTY 5 6
v4
AS400605 FLEETFLO 5 6
v4

No rows match “”.

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Note:
These are observed adjacencies derived from BGP path data, not confirmed commercial relationships. A network appearing before another in an AS path does not establish that it is a paying transit customer, a settlement free peer, or anything else contractual.