AS33651 · US — Comcast Cable Communications, LLC

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CMCS · ARIN · US

Identity source

AS33651 ·

US Comcast Cable Communications, LLC

NRO allocation data

109IPv4 prefixes

187IPv6 prefixes

93Observed neighbors

RPKIValid: 281 Invalid: 4 Not found: 11 Unknown: 0

Selected local snapshot coverage; not the whole Internet. BGP snapshots: ris-rrc00 11 Oct 08:00 UTC; routeviews2 11 Oct 08:00 UTC; routeviews6 11 Oct 08:00 UTC. Validator: 11 Oct 09:23 UTC. Publication-point issues: 89

Address space details

Overlapping originated prefixes counted once. IPv4 addresses: 82,176

IPv6 addresses: 634068294203857241212467544064

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Observed originated prefixes

These are observed BGP origins, not an inventory of registered allocations or transit reachability.

187 matching prefix–origin pairs. Each pair appears once; source observations are in Details.

Prefix	RPKI	Last observed	Details
2001:559:2ac::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:2dd::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:2e6::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:305::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:329::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:340::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:35b::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:376::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:37e::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:39c::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:3bd::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:3be::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:457::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:499::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:4ac::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:519::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:520::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:53e::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:546::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:549::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:55a::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:755::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:7b1::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:8000::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid
2001:559:8087::/48	Valid	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI valid

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AS connectivity

93 unique neighbors in the selected local snapshots. This is the available collector dataset, not a complete map of the Internet. Adjacency does not establish upstream service or peering.

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Darker nodes = larger inferred customer cone. CAIDA IPv4 customer cone (includes the AS itself); unknown / IPv6 cone is gray.
Arrow = provider → customer, not traffic direction. Purple: provider/customer · teal: peer · gray: unknown/mixed. Solid: observed BGP adjacency · dashed: inferred only. A graph path is not an observed BGP route or a promise of transit.

Find node (also searches grouped networks)

93 matching neighbors · 1–50 shown

Network	IPv4/IPv6	Seen in	Last observed	Details
AS1226 · US California Department of Technology	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS2894 · US California Department of Water Resources	IPv4	routeviews2	11 Oct 08:00 UTC	Source observations routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS3708 · US Pacific Biosciences of California, Inc.	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS4182 · US MLSListings inc.	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS5081 · US CLARE COMPUTER SOLUTIONS	IPv4, IPv6	ris-rrc00, routeviews2, routeviews6	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC ris-rrc00 · IPv6 · 11 Oct 08:00 UTC routeviews6 · IPv6 · 11 Oct 08:00 UTC
AS5091 · US STRIPE - Stripe, Inc.	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS5098 · US Opus One Winery, LLC	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS6099 · US Alameda County Office of Education	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS6379 · US A-Link Network Services, Inc.	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS7922 · US Comcast Cable Communications, LLC	IPv4, IPv6	ris-rrc00, routeviews2, routeviews6	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC ris-rrc00 · IPv6 · 11 Oct 08:00 UTC routeviews6 · IPv6 · 11 Oct 08:00 UTC
AS10309 · US County of Marin	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS10982 · US TIVO-SJ - TiVo, Inc.	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS11328 · US Bio-Rad Laboratories, Inc.	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS11574 · US San Francisco Baseball Associates LLC	IPv4	routeviews2	11 Oct 08:00 UTC	Source observations routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS11829 · US Cadence Design Systems, Inc.	IPv4	routeviews2	11 Oct 08:00 UTC	Source observations routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS13511 · US Univision Communications Inc.	IPv4	routeviews2	11 Oct 08:00 UTC	Source observations routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS13843 · US Phoenix American Inc.	IPv4	routeviews2	11 Oct 08:00 UTC	Source observations routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS14203 · US JUNIPER-NETWORKS - Juniper Networks, Inc.	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS14388 · US Bronco Wine Co.	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS14421 · US Theravance Biopharma US, LLC	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS14706 · US Monterey Bay Aquarium Research Institute	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS16920 · US Wind River Systems, Inc.	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS17003 · US Zoetis Inc.	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS17035 · US NBCUNI-17035 - NBCUniversal	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS17117 · US RITSnet, Inc.	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS18841 · US TRIMBLE-SNVL - Trimble, Inc.	IPv4	routeviews2	11 Oct 08:00 UTC	Source observations routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS18880 · US LAMRC - Lam Research Corporation	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS19099 · Registration country unavailable RAMBUS - Rambus	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS19126 · US KIZAWIRELESS - KIZA	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS20066 · US MSC-SJ-HQ - Supermicro Computer	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS22216 · US Siemens Corporation	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS22369 · US ONEMIND-01 - Cloudmylab.com	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS22695 · US PLAYGROUND - Playground Global, LLC	IPv6	ris-rrc00, routeviews6	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv6 · 11 Oct 08:00 UTC routeviews6 · IPv6 · 11 Oct 08:00 UTC
AS22700 · US University of San Francisco	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS22768 · US SYNERGYBROADBAND-MI-02 - SYNERGY BROADBAND	IPv4	routeviews2	11 Oct 08:00 UTC	Source observations routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS23154 · US Sanmina-SCI Corporation	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS23472 · US SonicWALL, Inc.	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS25875 · US FriendFinder Networks Inc	IPv4	routeviews2	11 Oct 08:00 UTC	Source observations routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS26325 · US TECHCU-AS - Technology Credit Union	IPv4	ris-rrc00	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC
AS26476 · US CyberU, Inc.	IPv4	routeviews2	11 Oct 08:00 UTC	Source observations routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS27580 · US CONVERGEONE HOLDINGS, INC.	IPv4	routeviews2	11 Oct 08:00 UTC	Source observations routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS29878 · US Community Hospital of the Monterey Peninsula	IPv4	ris-rrc00	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC
AS32319 · US AS-MARQETA - Marqeta, Inc.	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS32504 · US Intelletrace	IPv4, IPv6	ris-rrc00, routeviews2, routeviews6	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC ris-rrc00 · IPv6 · 11 Oct 08:00 UTC routeviews6 · IPv6 · 11 Oct 08:00 UTC
AS32537 · US XILINX - Xilinx Incorporated	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS32928 · US ITechTool Incorporated	IPv4	routeviews2	11 Oct 08:00 UTC	Source observations routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS33161 · US Chumash Casino Resort	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS33311 · US NET-TOPCON - TOPCON POSITIONING SYSTEMS INC	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS33382 · US CRYPTIC STUDIOS, INC.	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS35928 · US BECKMAN COULTER, INC.	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC

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Peering & locations

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Registry information

ARIN · fetched 11 Oct 02:42 UTC

Resource name: CMCS
Handle: AS33651
RDAP country: Not supplied
ASN: 33651

Registered organizations

Comcast Cable Communications, LLC

Last Changed: 25 Jan 2021 20:22 UTC

Registration: 16 Feb 2005 19:59 UTC

Registry source

Allocation statistics

NRO/RIR delegated-extended records describe allocation or assignment ranges. They do not prove a BGP announcement or replace more-specific RDAP registration information. Country is the allocation record’s registration country, not the physical location of every address.

AS33651–AS33651 · arin · assigned · ASN allocation country: US · Allocation date: 2005-02-16 — NRO/RIR data · snapshot 10 Oct 00:00 UTC

NRO data and format

Prefix count history

Local observation changes

Only comparable successful snapshots are compared. First imports, changed peer coverage and collection gaps are baselines, not new global routes or withdrawals. RPKI transition history is not available before it has been recorded.

No retained changes are available for this resource.

Retained local prefix-count observations

Separate collector series. Missing rows are not zero. Peer-set changes are separate coverage, not a continuous trend.

Source	Snapshot	Family	Prefixes	Peer coverage
routeviews6	11 Oct 08:00 UTC	IPv6	187	2406:840:feed:2::1/IPv6
ris-rrc00	11 Oct 08:00 UTC	IPv4	83	2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00	11 Oct 08:00 UTC	IPv6	186	2a00:5884::6/IPv6, 89.234.186.6/IPv4
routeviews2	11 Oct 08:00 UTC	IPv4	109	140.192.8.16/IPv4
routeviews2	11 Oct 06:00 UTC	IPv4	109	140.192.8.16/IPv4
routeviews6	11 Oct 06:00 UTC	IPv6	187	2406:840:feed:2::1/IPv6
ris-rrc00	11 Oct 00:00 UTC	IPv4	83	2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00	11 Oct 00:00 UTC	IPv6	186	2a00:5884::6/IPv6, 89.234.186.6/IPv4