AS174 · 
US — COGENT-174 - Cogent Communications, LLC
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COGENT-174 - Cogent Communications, LLC · · US
Selected local snapshot coverage; not the whole Internet. BGP snapshots: ris-rrc00 10 Oct 16:00 UTC; routeviews2 10 Oct 18:00 UTC; routeviews6 10 Oct 18:00 UTC. Validator: 10 Oct 19:54 UTC. Publication-point issues: 87
Address space details
Overlapping originated prefixes counted once. IPv4 addresses: 36,336,896
IPv6 addresses: 3981367490995054407351596482560
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Observed originated prefixes
These are observed BGP origins, not an inventory of registered allocations or transit reachability.
4367 matching prefix–origin pairs. Each pair appears once; source observations are in Details.
| Prefix | RPKI | Last observed | Details |
|---|---|---|---|
Not Found | 10 Oct 18:00 UTC | 2 source observations
| |
Valid | 10 Oct 18:00 UTC | 2 source observations
| |
Not Found | 10 Oct 18:00 UTC | 2 source observations
| |
Not Found | 10 Oct 18:00 UTC | 2 source observations
| |
Not Found | 10 Oct 18:00 UTC | 2 source observations
| |
Valid | 10 Oct 16:00 UTC | 1 source observations
| |
Valid | 10 Oct 16:00 UTC | 1 source observations
| |
Valid | 10 Oct 16:00 UTC | 1 source observations
| |
Valid | 10 Oct 18:00 UTC | 2 source observations
| |
Valid | 10 Oct 18:00 UTC | 2 source observations
| |
Valid | 10 Oct 18:00 UTC | 2 source observations
| |
Valid | 10 Oct 18:00 UTC | 2 source observations
| |
Valid | 10 Oct 18:00 UTC | 2 source observations
| |
Valid | 10 Oct 16:00 UTC | 1 source observations
| |
Valid | 10 Oct 18:00 UTC | 2 source observations
| |
Valid | 10 Oct 16:00 UTC | 1 source observations
| |
Valid | 10 Oct 18:00 UTC | 2 source observations
| |
Valid | 10 Oct 16:00 UTC | 1 source observations
| |
Valid | 10 Oct 16:00 UTC | 1 source observations
| |
Valid | 10 Oct 18:00 UTC | 2 source observations
| |
Valid | 10 Oct 18:00 UTC | 2 source observations
| |
Valid | 10 Oct 18:00 UTC | 2 source observations
| |
Valid | 10 Oct 18:00 UTC | 2 source observations
| |
Valid | 10 Oct 18:00 UTC | 2 source observations
| |
Valid | 10 Oct 18:00 UTC | 2 source observations
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Observed AS neighbors
5414 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.
5414 matching neighbors · 1–25 shown
| Network | IPv4/IPv6 | Seen in | Last observed | Details |
|---|---|---|---|---|
AS3 · US MIT-GATEWAYS - Massachusetts Institute of Technology | IPv4 | ris-rrc00, routeviews2 | 10 Oct 18:00 UTC | Source observations
|
AS4 · US ISI-AS - University of Southern California | IPv4 | ris-rrc00, routeviews2 | 10 Oct 18:00 UTC | Source observations
|
AS14 · US COLUMBIA-GW - Columbia University | IPv4, IPv6 | ris-rrc00, routeviews2 | 10 Oct 18:00 UTC | Source observations
|
AS18 · US UTEXAS - University of Texas at Austin | IPv4 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
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AS20 · US UR - University of Rochester | IPv4, IPv6 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
|
AS29 · US YALE-AS - Yale University | IPv4 | ris-rrc00, routeviews2 | 10 Oct 18:00 UTC | Source observations
|
AS34 · US UDELNET - University of Delaware | IPv4 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
|
AS55 · US UPENN - University of Pennsylvania | IPv4, IPv6 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
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AS62 · US CONE - CyrusOne LLC | IPv4, IPv6 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
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AS81 · US NCREN - MCNC | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 10 Oct 18:00 UTC | Source observations
|
AS91 · US RPI-AS - Rensselaer Polytechnic Institute | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 10 Oct 18:00 UTC | Source observations
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AS92 · US CLARKSON-AS - Clarkson University | IPv4, IPv6 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
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AS101 · US WASH-NSF-AS - University of Washington | IPv4, IPv6 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
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AS103 · US NWU-AS - Northwestern University | IPv4 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
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AS111 · US BOSTONU-AS - Boston University | IPv4, IPv6 | ris-rrc00, routeviews2 | 10 Oct 18:00 UTC | Source observations
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AS122 · US UPMC-AS122 - UPMC | IPv4, IPv6 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
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AS137 ·  IT ASGARR Consortium GARR | IPv4 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
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AS156 · US NORTHEASTERN-GW-AS - Northeastern University | IPv4 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
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AS210 · US WEST-NET-WEST - Utah Education Network | IPv4, IPv6 | ris-rrc00, routeviews2 | 10 Oct 18:00 UTC | Source observations
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AS237 · US MERIT-AS-14 - Merit Network Inc. | IPv4, IPv6 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
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AS264 · US SRINET-AS - SRI International | IPv4 | ris-rrc00, routeviews2 | 10 Oct 18:00 UTC | Source observations
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AS376 ·  CA RISQ-AS - Reseau dInformations Scientifiques du Quebec RISQ Inc. | IPv4, IPv6 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
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AS557 · US UMAINE-SYS-AS - University of Maine System | IPv4 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
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AS558 · US VEGANEXT - NV Next LLC | IPv4 | ris-rrc00, routeviews2 | 10 Oct 18:00 UTC | Source observations
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AS577 · CA BACOM - Bell Canada | IPv4, IPv6 | ris-rrc00 | 10 Oct 16:00 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 5414 matching neighbors, in table sort order, independent of table page.
Peering & locations
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Registry information
No cached registry response is available yet. Routing origins above are not a substitute for registry ownership.
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.
- AS174–AS174 · arin · assigned · ASN allocation country: US · Allocation date: 1996-05-16 — 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.
- 10 Oct 18:00 UTC · First observed by pjhtech · 38.252.206.0/24
1 source observations
- routeviews2 · imported 10 Oct 18:37 UTC
- 10 Oct 16:00 UTC · First observed by pjhtech · 65.174.252.0/24
1 source observations
- ris-rrc00 · imported 10 Oct 16:34 UTC
- 10 Oct 14:00 UTC · First observed by pjhtech · 208.30.14.0/23
1 source observations
- routeviews2 · imported 10 Oct 14:53 UTC
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 | 10 Oct 18:00 UTC | IPv4 | 3821 | 140.192.8.16/IPv4 |
routeviews6 | 10 Oct 18:00 UTC | IPv6 | 450 | 2406:840:feed:2::1/IPv6 |
ris-rrc00 | 10 Oct 16:00 UTC | IPv6 | 449 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |
routeviews6 | 10 Oct 16:00 UTC | IPv6 | 450 | 2406:840:feed:2::1/IPv6 |
routeviews2 | 10 Oct 16:00 UTC | IPv4 | 3820 | 140.192.8.16/IPv4 |
ris-rrc00 | 10 Oct 16:00 UTC | IPv4 | 3901 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |
ris-rrc00 | 10 Oct 08:00 UTC | IPv4 | 3900 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |
ris-rrc00 | 10 Oct 08:00 UTC | IPv6 | 449 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |