AS33651 · 
US — Comcast Cable Communications, LLC
· View prefixes · Compare ASN · Export prefixes
CMCS · ARIN · US
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
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Observed originated prefixes
These are observed BGP origins, not an inventory of registered allocations or transit reachability.
11 matching prefix–origin pairs. Each pair appears once; source observations are in Details.
| Prefix | RPKI | Last observed | Details |
|---|---|---|---|
Not Found | 11 Oct 02:00 UTC | 2 source observations
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Not Found | 11 Oct 02:00 UTC | 2 source observations
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Not Found | 11 Oct 02:00 UTC | 1 source observations
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Not Found | 11 Oct 02:00 UTC | 2 source observations
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Not Found | 11 Oct 02:00 UTC | 2 source observations
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Not Found | 11 Oct 02:00 UTC | 2 source observations
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Not Found | 11 Oct 02:00 UTC | 2 source observations
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Not Found | 11 Oct 02:00 UTC | 2 source observations
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Not Found | 11 Oct 02:00 UTC | 2 source observations
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Not Found | 11 Oct 02:00 UTC | 2 source observations
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Not Found | 11 Oct 02:00 UTC | 2 source observations
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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 · 1–25 shown
| Network | IPv4/IPv6 | Seen in | Last observed | Details |
|---|---|---|---|---|
AS1226 · US California Department of Technology | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS2894 · US California Department of Water Resources | IPv4 | routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS3708 · US Pacific Biosciences of California, Inc. | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS4182 · US MLSListings inc. | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS5081 · US CLARE COMPUTER SOLUTIONS | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 02:00 UTC | Source observations
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AS5091 · US STRIPE - Stripe, Inc. | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS5098 · US Opus One Winery, LLC | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS6099 · US Alameda County Office of Education | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS6379 · US A-Link Network Services, Inc. | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS7922 · US Comcast Cable Communications, LLC | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 02:00 UTC | Source observations
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AS10309 · US County of Marin | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS10982 · US TIVO-SJ - TiVo, Inc. | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS11328 · US Bio-Rad Laboratories, Inc. | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS11574 · US San Francisco Baseball Associates LLC | IPv4 | routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS11829 · US Cadence Design Systems, Inc. | IPv4 | routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS13511 · US Univision Communications Inc. | IPv4 | routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS13843 · US Phoenix American Inc. | IPv4 | routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS14203 · US JUNIPER-NETWORKS - Juniper Networks, Inc. | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS14388 · US Bronco Wine Co. | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS14421 · US Theravance Biopharma US, LLC | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS14706 · US Monterey Bay Aquarium Research Institute | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS16920 · US Wind River Systems, Inc. | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS17003 · US Zoetis Inc. | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS17035 · US NBCUNI-17035 - NBCUniversal | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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AS17117 · US RITSnet, Inc. | IPv4 | ris-rrc00, routeviews2 | 11 Oct 02:00 UTC | Source observations
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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.
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
Last Changed: 25 Jan 2021 20:22 UTC
Registration: 16 Feb 2005 19:59 UTC
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
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 |
|---|---|---|---|---|
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 |