AS174 Cogent Communications, LLC πŸ‡ΊπŸ‡Έ US

Announcing 4,404 prefixes, seen at the RIS collectors.

IPv4 prefixes
3,873
37,703,424 (147,279 Γ— /24)
IPv6 prefixes
531
58 Γ— /32
Upstreams
89
transit providers observed
Peers
22
settlement-free adjacencies
Downstreams
6,422
transit customers observed
Customer cone
66,366
ASes reachable through it

Registry and operator data

AS number
AS174
Name
Cogent Communications, LLC
Organisation
Cogent Communications, Inc.
Country
πŸ‡ΊπŸ‡Έ US
RIR
ARIN
Allocated
1996-05-16
Network type
NSP
Traffic levels
100+Tbps
Scope
Global
Peering policy
No
PeeringDB
net/267
Facilities
816

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

406 valid (9.2%) 35 invalid (0.8%) 3,963 no ROA (90.0%)

Announcement history

One point per day, recorded at each table import

01k2k3k4k09-1809-2610-0410-1210-2010-2811-04
IPv4 IPv6

Recorded changes

New prefixes and origin changes seen on the live stream

WhenChangePrefixOriginPath
2026-11-04 19:45:37Z origin change 38.226.45.0/24 AS142307 β†’ AS174 460875751299174
2026-11-04 19:38:27Z origin change 2a06:f980::/29 AS174 β†’ AS47942 4943248362900247942
2026-11-04 19:38:01Z origin change 2a06:f980::/29 AS47942 β†’ AS174 49432483621764174
2026-11-04 19:32:48Z origin change 38.226.47.0/24 AS142307 β†’ AS174 460875751299174
2026-11-04 19:32:37Z origin change 38.226.47.0/24 AS174 β†’ AS142307 244824800142307142307142307
2026-11-04 19:32:36Z origin change 38.226.47.0/24 AS142307 β†’ AS174 2448229142914174
2026-11-04 19:31:57Z origin change 38.128.116.0/24 AS174 β†’ AS151690 49673204856453475518229151690151690151690151690151690151690151690
2026-11-04 19:31:57Z origin change 38.128.117.0/24 AS174 β†’ AS151690 49673204856453475518229151690151690151690151690151690151690151690
2026-11-04 19:31:31Z origin change 38.128.117.0/24 AS151690 β†’ AS174 49673315006762174
2026-11-04 19:31:31Z origin change 38.128.116.0/24 AS151690 β†’ AS174 49673315006762174
2026-11-04 19:30:39Z origin change 38.128.117.0/24 AS174 β†’ AS151690 216285828067626453475518229151690151690151690151690151690151690151690
2026-11-04 19:30:39Z origin change 38.128.116.0/24 AS174 β†’ AS151690 216285828067626453475518229151690151690151690151690151690151690151690
2026-11-04 19:28:02Z origin change 38.224.168.0/22 AS174 β†’ AS212337 45049669657463206735212337
2026-11-04 19:27:46Z origin change 154.56.113.0/24 AS21859 β†’ AS174 49673204856762174
2026-11-04 19:27:46Z origin change 154.56.112.0/24 AS21859 β†’ AS174 49673204856762174
2026-11-04 19:27:46Z origin change 154.41.83.0/24 AS21859 β†’ AS174 49673204856762174
2026-11-04 19:27:46Z origin change 154.41.84.0/24 AS21859 β†’ AS174 49673204856762174
2026-11-04 19:27:41Z origin change 38.224.168.0/22 AS212337 β†’ AS174 557202914174
2026-11-04 19:27:34Z origin change 38.224.168.0/22 AS212337 β†’ AS174 2448229142914174
2026-11-04 19:27:34Z origin change 38.224.168.0/22 AS174 β†’ AS212337 24482206735212337
2026-11-04 19:27:34Z origin change 38.224.168.0/22 AS212337 β†’ AS174 4943221551031543174
2026-11-04 19:27:34Z origin change 38.224.168.0/22 AS174 β†’ AS212337 2950457463206735212337
2026-11-04 19:27:34Z origin change 38.224.168.0/22 AS212337 β†’ AS174 2040922076629169174
2026-11-04 19:27:34Z origin change 38.224.168.0/22 AS174 β†’ AS212337 2040922076657463206735212337
2026-11-04 19:27:33Z origin change 38.224.168.0/22 AS174 β†’ AS212337 61218693925472212337
2026-11-04 19:27:14Z origin change 38.226.46.0/24 AS174 β†’ AS142307 244824800142307142307142307142307
2026-11-04 19:27:14Z origin change 38.226.47.0/24 AS174 β†’ AS142307 244824800142307142307142307
2026-11-04 19:27:08Z origin change 154.56.112.0/24 AS174 β†’ AS21859 21628582803356291421859
2026-11-04 19:27:08Z origin change 154.41.83.0/24 AS174 β†’ AS21859 21628582803356291421859
2026-11-04 19:27:08Z origin change 154.41.84.0/24 AS174 β†’ AS21859 21628582803356291421859
2026-11-04 19:27:08Z origin change 154.56.113.0/24 AS174 β†’ AS21859 21628582803356291421859
2026-11-04 19:24:03Z origin change 154.56.131.0/24 AS211826 β†’ AS174 57381503041299174
2026-11-04 19:24:02Z origin change 154.56.131.0/24 AS174 β†’ AS211826 4504966965511211826
2026-11-04 19:23:50Z origin change 154.56.131.0/24 AS211826 β†’ AS174 202051299174
2026-11-04 19:23:41Z origin change 154.56.131.0/24 AS174 β†’ AS211826 21324190025511211826
2026-11-04 19:20:31Z origin change 38.188.207.0/24 AS142307 β†’ AS174 460875751299174
2026-11-04 19:20:31Z origin change 38.226.47.0/24 AS142307 β†’ AS174 460875751299174
2026-11-04 19:20:13Z origin change 38.226.47.0/24 AS174 β†’ AS142307 244824800142307142307142307
2026-11-04 19:20:13Z origin change 38.188.207.0/24 AS174 β†’ AS142307 244824800142307142307142307142307142307
2026-11-04 19:20:12Z origin change 38.188.207.0/24 AS142307 β†’ AS174 2448229142914174
2026-11-04 19:20:12Z origin change 38.226.47.0/24 AS142307 β†’ AS174 2448229142914174
2026-11-04 19:20:10Z origin change 38.226.47.0/24 AS174 β†’ AS142307 6121869394800142307142307142307
2026-11-04 19:20:10Z origin change 38.188.207.0/24 AS174 β†’ AS142307 6121869394800142307142307142307142307142307
2026-11-04 19:18:59Z origin change 38.188.207.0/24 AS142307 β†’ AS174 460875751299174
2026-11-04 19:18:59Z origin change 38.191.164.0/23 AS142307 β†’ AS174 460875752914174
2026-11-04 19:18:59Z origin change 38.226.46.0/24 AS142307 β†’ AS174 460875751299174
2026-11-04 19:18:59Z origin change 38.226.47.0/24 AS142307 β†’ AS174 460875751299174
2026-11-04 19:18:56Z origin change 38.191.164.0/23 AS174 β†’ AS142307 244824800142307142307142307142307
2026-11-04 19:18:55Z origin change 38.226.47.0/24 AS142307 β†’ AS174 2448229142914174
2026-11-04 19:18:55Z origin change 38.226.46.0/24 AS142307 β†’ AS174 2448229142914174
2026-11-04 19:18:55Z origin change 38.191.164.0/23 AS142307 β†’ AS174 2448229142914174
2026-11-04 19:18:55Z origin change 38.226.47.0/24 AS174 β†’ AS142307 244824800142307142307142307
2026-11-04 19:18:55Z origin change 38.226.46.0/24 AS174 β†’ AS142307 244824800142307142307142307142307
2026-11-04 19:18:54Z origin change 38.188.207.0/24 AS142307 β†’ AS174 2448229142914174
2026-11-04 19:18:54Z origin change 38.188.207.0/24 AS174 β†’ AS142307 61218693964534800142307142307142307142307142307
2026-11-04 19:18:03Z origin change 38.224.168.0/22 AS212337 β†’ AS174 2162858280174
2026-11-04 19:18:01Z origin change 38.224.168.0/22 AS174 β†’ AS212337 45049669667622547225472212337
2026-11-04 19:17:38Z origin change 38.224.168.0/22 AS212337 β†’ AS174 377211299174
2026-11-04 19:17:37Z origin change 38.224.168.0/22 AS174 β†’ AS212337 61218693967622547225472212337
2026-11-04 19:17:36Z origin change 38.224.168.0/22 AS174 β†’ AS212337 349275665557463206735212337
2026-11-04 19:17:36Z origin change 38.224.168.0/22 AS212337 β†’ AS174 34927566551299174
2026-11-04 19:17:34Z origin change 38.224.168.0/22 AS174 β†’ AS212337 24482291467622547225472212337
2026-11-04 19:17:34Z origin change 38.224.168.0/22 AS212337 β†’ AS174 2448229142914174
2026-11-04 19:17:33Z origin change 38.224.168.0/22 AS212337 β†’ AS174 20236550673174
2026-11-04 19:17:33Z origin change 38.224.168.0/22 AS174 β†’ AS212337 4439358057206735212337
2026-11-04 19:17:33Z origin change 38.224.168.0/22 AS212337 β†’ AS174 443933571048093356174
2026-11-04 19:17:33Z origin change 38.224.168.0/22 AS174 β†’ AS212337 20649934549206735212337
2026-11-04 19:17:33Z origin change 38.224.168.0/22 AS212337 β†’ AS174 5805734549174
2026-11-04 19:17:33Z origin change 38.224.168.0/22 AS174 β†’ AS212337 4818557463206735212337
2026-11-04 19:17:33Z origin change 38.224.168.0/22 AS212337 β†’ AS174 481853356174
2026-11-04 19:16:01Z origin change 38.128.117.0/24 AS151690 β†’ AS174 4504966966762174
2026-11-04 19:16:01Z origin change 38.128.116.0/24 AS151690 β†’ AS174 4504966966762174
2026-11-04 19:15:49Z origin change 38.128.112.0/24 AS174 β†’ AS151690 216285828033566453475518229151690151690151690
2026-11-04 19:15:49Z origin change 38.128.113.0/24 AS174 β†’ AS151690 216285828033566453475518229151690151690151690
2026-11-04 19:15:49Z origin change 38.128.117.0/24 AS174 β†’ AS151690 216285828033566453475518229151690151690151690151690151690151690151690
2026-11-04 19:15:49Z origin change 38.128.116.0/24 AS174 β†’ AS151690 216285828033566453475518229151690151690151690151690151690151690151690
2026-11-04 19:15:48Z origin change 38.128.113.0/24 AS151690 β†’ AS174 49673123896762174
2026-11-04 19:15:48Z origin change 38.128.112.0/24 AS151690 β†’ AS174 49673123896762174
2026-11-04 19:15:48Z origin change 38.128.116.0/24 AS151690 β†’ AS174 49673123896762174
2026-11-04 19:15:48Z origin change 38.128.117.0/24 AS151690 β†’ AS174 49673123896762174
2026-11-04 19:09:15Z origin change 38.188.207.0/24 AS174 β†’ AS142307 46081221463764534800142307142307142307142307142307
2026-11-04 19:09:14Z origin change 38.188.207.0/24 AS142307 β†’ AS174 557202914174
2026-11-04 19:08:46Z origin change 38.191.164.0/23 AS142307 β†’ AS174 2448229142914174
2026-11-04 19:08:46Z origin change 38.226.46.0/24 AS142307 β†’ AS174 2448229142914174
2026-11-04 19:08:46Z origin change 38.226.47.0/24 AS142307 β†’ AS174 2448229142914174
2026-11-04 19:08:46Z origin change 38.188.207.0/24 AS174 β†’ AS142307 244824800142307142307142307142307142307
2026-11-04 19:08:46Z origin change 38.191.164.0/23 AS174 β†’ AS142307 244824800142307142307142307142307
2026-11-04 19:08:46Z origin change 38.226.46.0/24 AS174 β†’ AS142307 244824800142307142307142307142307
2026-11-04 19:08:46Z origin change 38.226.47.0/24 AS174 β†’ AS142307 244824800142307142307142307
2026-11-04 19:08:45Z origin change 38.188.207.0/24 AS142307 β†’ AS174 2448229142914174
2026-11-04 19:05:06Z origin change 38.226.47.0/24 AS174 β†’ AS142307 244824800142307142307142307
2026-11-04 19:05:06Z origin change 38.226.46.0/24 AS174 β†’ AS142307 244824800142307142307142307142307
2026-11-04 19:05:06Z origin change 38.191.164.0/23 AS174 β†’ AS142307 244824800142307142307142307142307
2026-11-04 19:05:05Z origin change 38.188.207.0/24 AS142307 β†’ AS174 2448229142914174
2026-11-04 19:05:05Z origin change 38.188.207.0/24 AS174 β†’ AS142307 244824800142307142307142307142307142307
2026-11-04 19:05:05Z origin change 38.226.47.0/24 AS142307 β†’ AS174 2448229142914174
2026-11-04 19:05:05Z origin change 38.226.46.0/24 AS142307 β†’ AS174 2448229142914174
2026-11-04 19:05:05Z origin change 38.191.164.0/23 AS142307 β†’ AS174 2448229142914174
2026-11-04 19:05:02Z origin change 38.226.47.0/24 AS174 β†’ AS142307 6121869394800142307142307142307
2026-11-04 19:05:02Z origin change 38.188.207.0/24 AS174 β†’ AS142307 6121869394800142307142307142307142307142307