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AS33651 · Registration country: US US — Comcast Cable Communications, LLC

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CMCS · ARIN · Registration country: US US

Identity sourceAS33651 · Registration country: US US Comcast Cable Communications, LLC

NRO allocation data

109IPv4 prefixes
187IPv6 prefixes
93Observed neighbors
RPKIValid: 281Invalid: 4Not found: 11Unknown: 0

Selected local snapshot coverage; not the whole Internet. BGP snapshots: ris-rrc00 11 Oct 00:00 UTC; routeviews2 11 Oct 02:00 UTC; routeviews6 11 Oct 02:00 UTC. Validator: 11 Oct 03:23 UTC. Publication-point issues: 89

Address space details

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

IPv6 addresses: 634068294203857241212467544064

Loading public source data…

Observed originated prefixes

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

Advanced filters

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

PrefixRPKILast observedDetails
Valid
11 Oct 02:00 UTC
1 source observations
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
1 source observations
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
1 source observations
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
1 source observations
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
1 source observations
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
1 source observations
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Invalid
11 Oct 02:00 UTC
1 source observations
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI invalid
Validation evidence

prefix too specific

{
  "state": "invalid",
  "reason": "prefix too specific",
  "observed_at": "2026-10-11T03:23:05.295058+00:00",
  "source": "Local Routinator",
  "metadata": {
    "rows": 1018605,
    "serial": 39,
    "version": "routinator/0.15.2",
    "publication_point_issues": 89
  },
  "vrps": [
    {
      "prefix": "9.142.0.0/16",
      "asn": 6079,
      "max_length": 24,
      "trust_anchor": "ripe"
    },
    {
      "prefix": "9.142.64.0/18",
      "asn": 33667,
      "max_length": 18,
      "trust_anchor": "ripe"
    },
    {
      "prefix": "9.142.96.0/19",
      "asn": 33651,
      "max_length": 19,
      "trust_anchor": "ripe"
    },
    {
      "prefix": "9.142.96.0/19",
      "asn": 33667,
      "max_length": 19,
      "trust_anchor": "ripe"
    }
  ]
}
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
1 source observations
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
1 source observations
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 02:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid

Next rows

Export observed prefixes: TXT · CSV · JSON

Observed AS neighbors

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.

93 matching neighbors · 26–50 shown

NetworkIPv4/IPv6Seen inLast observedDetails
AS18841 · Registration country: US US TRIMBLE-SNVL - Trimble, Inc.
IPv4
routeviews2
11 Oct 02:00 UTC
Source observations
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS18880 · Registration country: US US LAMRC - Lam Research Corporation
IPv4
ris-rrc00, routeviews2
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS19099 · Registration country unavailable RAMBUS - Rambus
IPv4
ris-rrc00, routeviews2
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS19126 · Registration country: US US KIZAWIRELESS - KIZA
IPv4
ris-rrc00, routeviews2
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS20066 · Registration country: US US MSC-SJ-HQ - Supermicro Computer
IPv4
ris-rrc00, routeviews2
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS22216 · Registration country: US US SIEMENS-PLM - Siemens Corporation
IPv4
ris-rrc00, routeviews2
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS22369 · Registration country: US US ONEMIND-01 - Cloudmylab.com
IPv4
ris-rrc00, routeviews2
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS22695 · Registration country: US US PLAYGROUND - Playground Global, LLC
IPv6
ris-rrc00, routeviews6
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv6 · 11 Oct 00:00 UTC
  • routeviews6 · IPv6 · 11 Oct 02:00 UTC
AS22700 · Registration country: US US USFCA - University of San Francisco
IPv4
ris-rrc00, routeviews2
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS22768 · Registration country: US US SYNERGYBROADBAND-MI-02 - SYNERGY BROADBAND
IPv4
routeviews2
11 Oct 02:00 UTC
Source observations
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS23154 · Registration country: US US SANMINA-SCI - Sanmina-SCI Corporation
IPv4
ris-rrc00, routeviews2
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS23472 · Registration country: US US SONICWALL-BGP - SonicWALL, Inc.
IPv4
ris-rrc00, routeviews2
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS25875 · Registration country: US US VARIOUS - FriendFinder Networks Inc
IPv4
routeviews2
11 Oct 02:00 UTC
Source observations
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS26325 · Registration country: US US TECHCU-AS - Technology Credit Union
IPv4
ris-rrc00
11 Oct 00:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
AS26476 · Registration country: US US CYBERU - CyberU, Inc.
IPv4
routeviews2
11 Oct 02:00 UTC
Source observations
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS27580 · Registration country: US US ENGINEERING-ASN1 - CONVERGEONE HOLDINGS, INC.
IPv4
routeviews2
11 Oct 02:00 UTC
Source observations
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS29878 · Registration country: US US CHMP-ASN - Community Hospital of the Monterey Peninsula
IPv4
ris-rrc00
11 Oct 00:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
AS32319 · Registration country: US US AS-MARQETA - Marqeta, Inc.
IPv4
ris-rrc00, routeviews2
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS32504 · Registration country: US US INTELLETRACE - Intelletrace
IPv4, IPv6
ris-rrc00, routeviews2, routeviews6
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
  • ris-rrc00 · IPv6 · 11 Oct 00:00 UTC
  • routeviews6 · IPv6 · 11 Oct 02:00 UTC
AS32537 · Registration country: US US XILINX - Xilinx Incorporated
IPv4
ris-rrc00, routeviews2
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS32928 · Registration country: US US ITECHTOOL-ASN-LAH - ITechTool Incorporated
IPv4
routeviews2
11 Oct 02:00 UTC
Source observations
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS33161 · Registration country: US US CHUMASH-ENTERPRISES - Chumash Casino Resort
IPv4
ris-rrc00, routeviews2
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS33311 · Registration country: US US NET-TOPCON - TOPCON POSITIONING SYSTEMS INC
IPv4
ris-rrc00, routeviews2
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS33382 · Registration country: US US CRYPTICSTUDIOS-HQ - CRYPTIC STUDIOS, INC.
IPv4
ris-rrc00, routeviews2
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS35928 · Registration country: US US BECKMAN-COULTER-ASN - BECKMAN COULTER, INC.
IPv4
ris-rrc00, routeviews2
11 Oct 02:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 02:00 UTC

Previous neighbors

Next neighbors

Clear neighbor filters

View observed neighbor graph (up to 15 AS nodes)

Lines mean observed adjacency, with no commercial direction inferred. The table above provides the same evidence and source times.

Showing 14 of 93 matching neighbors, in table sort order, independent of table page.

AS33651AS1226AS2894AS3708AS4182AS5081AS5091AS5098AS6099AS6379AS7922AS10309AS10982AS11328AS11574

Peering & locations

Loading public source data…

Registry information

ARIN · fetched 11 Oct 02:42 UTC

Resource name
CMCS
Handle
AS33651
RDAP country
Not supplied
ASN
33651

Registered organizations

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.

NRO data and format

Prefix count history

Uses the public RIPEstat Data API when requested.

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.

SourceSnapshotFamilyPrefixesPeer coverage
routeviews2
11 Oct 02:00 UTC
IPv4
109
140.192.8.16/IPv4
routeviews6
11 Oct 02:00 UTC
IPv6
187
2406:840:feed:2::1/IPv6
routeviews2
11 Oct 00:00 UTC
IPv4
109
140.192.8.16/IPv4
ris-rrc00
11 Oct 00:00 UTC
IPv6
186
2a00:5884::6/IPv6, 89.234.186.6/IPv4
routeviews6
11 Oct 00:00 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
10 Oct 16:00 UTC
IPv4
83
2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00
10 Oct 16:00 UTC
IPv6
186
2a00:5884::6/IPv6, 89.234.186.6/IPv4