AS174
Cogent Communications, LLC
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Active-threat / abuse risk −12
- Isp allocation +5
- Trust score 58 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About Cogent Communications
Cogent Communications Holdings, Inc. is a multinational internet service provider based in the United States.
⚠ 100+ MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS174 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.
| Prefix | Origin ASNs | Last detected (UTC) |
|---|---|---|
| 64.4.194.0/24 | AS174, AS135845 | 2026-08-28 13:08:43 |
| 38.159.32.0/24 | AS174, AS264509 | 2026-08-28 13:08:43 |
| 64.4.192.0/24 | AS174, AS135845 | 2026-08-28 13:08:43 |
| 154.56.131.0/24 | AS174, AS211826 | 2026-08-28 13:08:43 |
| 38.191.122.0/24 | AS174, AS149718 | 2026-08-28 13:08:43 |
| 38.191.123.0/24 | AS174, AS149718 | 2026-08-28 13:08:43 |
| 154.58.235.0/24 | AS174, AS274166 | 2026-08-28 13:08:43 |
| 38.19.48.0/24 | AS174, AS274697 | 2026-08-28 13:08:43 |
| 154.50.121.0/24 | AS174, AS133255 | 2026-08-28 13:08:43 |
| 154.50.120.0/23 | AS174, AS133255 | 2026-08-28 13:08:43 |
| 38.52.171.0/24 | AS174, AS273202 | 2026-08-28 13:08:43 |
| 38.191.122.0/23 | AS174, AS149718 | 2026-08-28 13:08:43 |
| 38.78.201.0/24 | AS174, AS398479 | 2026-08-28 13:08:43 |
| 38.105.3.0/24 | AS174, AS999, AS1031 | 2026-08-28 13:08:43 |
| 154.50.120.0/24 | AS174, AS133255 | 2026-08-28 13:08:43 |
Showing the 15 most recently detected of 100+ MOAS prefixes. Many multi-origin prefixes on large networks are benign (anycast); see all MOAS anomalies.
Network profile
Source: PeeringDB →Web3 footprint
AS174 hosts 31 observed decentralized-network nodes across 3 networks. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.
AS174 — global IP footprint
Cities where AS174 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS174 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 208.4.159.0/24 | 45,935 | 2026-08-28 12:46:42 |
| 69.54.244.0/22 | 38,031 | 2026-08-28 13:06:37 |
| 154.13.252.0/23 | 38,006 | 2026-08-28 13:06:37 |
| 154.13.254.0/23 | 37,984 | 2026-08-28 13:06:37 |
| 154.13.244.0/22 | 37,974 | 2026-08-28 13:06:37 |
| 154.13.206.0/23 | 37,971 | 2026-08-28 13:06:37 |
| 161.199.227.0/24 | 37,955 | 2026-08-28 13:06:37 |
| 185.76.40.0/22 | 37,923 | 2026-08-28 13:06:37 |
| 154.13.212.0/22 | 37,880 | 2026-08-28 13:06:37 |
| 154.13.204.0/23 | 37,878 | 2026-08-28 13:06:37 |
| 140.235.116.0/22 | 37,858 | 2026-08-28 13:06:37 |
| 154.29.2.0/24 | 37,825 | 2026-08-28 13:06:37 |
| 69.54.252.0/22 | 37,815 | 2026-08-28 13:06:37 |
| 175.29.64.0/19 | 37,807 | 2026-08-28 13:06:37 |
| 154.13.198.0/23 | 37,805 | 2026-08-28 13:06:37 |
| 64.22.72.0/24 | 37,804 | 2026-08-28 13:06:37 |
| 154.214.0.0/24 | 37,787 | 2026-08-28 13:06:37 |
| 154.88.42.0/23 | 37,769 | 2026-08-28 13:06:37 |
| 154.13.248.0/22 | 37,761 | 2026-08-28 13:06:37 |
| 154.28.67.0/24 | 37,730 | 2026-08-28 13:06:37 |
| 154.37.76.0/24 | 37,705 | 2026-08-28 13:06:37 |
| 154.37.72.0/24 | 37,651 | 2026-08-28 13:06:37 |
| 64.112.92.0/22 | 37,633 | 2026-08-28 13:06:37 |
| 204.11.144.0/22 | 37,623 | 2026-08-28 13:06:37 |
| 170.39.80.0/22 | 37,617 | 2026-08-28 13:06:37 |
| 154.17.157.0/24 | 37,601 | 2026-08-28 13:06:37 |
| 154.194.48.0/23 | 37,595 | 2026-08-28 13:06:37 |
| 154.17.188.0/23 | 37,512 | 2026-08-28 13:06:37 |
| 208.64.220.0/22 | 37,491 | 2026-08-28 13:06:37 |
| 65.172.132.0/24 | 34,992 | 2026-08-28 13:06:37 |
| 154.194.46.0/23 | 34,865 | 2026-08-28 12:29:13 |
| 207.90.244.0/24 | 34,307 | 2026-08-28 12:46:39 |
| 154.30.128.0/23 | 31,902 | 2026-08-28 12:46:39 |
| 209.10.119.0/24 | 31,833 | 2026-08-28 13:06:37 |
| 154.9.200.0/23 | 31,828 | 2026-08-28 12:46:39 |
| 154.9.176.0/23 | 31,812 | 2026-08-28 12:46:39 |
| 154.30.130.0/23 | 31,812 | 2026-08-28 12:46:39 |
| 154.12.134.0/23 | 31,788 | 2026-08-28 12:46:39 |
| 154.12.142.0/23 | 31,731 | 2026-08-28 12:46:39 |
| 154.21.96.0/23 | 31,729 | 2026-08-28 12:46:39 |
| 154.21.70.0/23 | 31,725 | 2026-08-28 12:46:39 |
| 154.12.132.0/23 | 31,724 | 2026-08-28 12:46:39 |
| 154.3.234.0/23 | 31,717 | 2026-08-28 12:46:39 |
| 154.12.140.0/23 | 31,705 | 2026-08-28 12:46:39 |
| 154.9.178.0/23 | 31,698 | 2026-08-28 12:46:39 |
| 154.3.232.0/23 | 31,687 | 2026-08-28 12:46:39 |
| 154.28.138.0/23 | 31,679 | 2026-08-28 12:46:39 |
| 154.21.154.0/23 | 31,670 | 2026-08-28 12:46:39 |
| 208.77.1.0/24 | 31,589 | 2026-08-13 03:56:50 |
| 103.247.129.0/24 | 31,533 | 2026-08-13 03:47:26 |
Showing top 50 of 5,468 announced prefixes by sample volume.
Frequently Asked Questions
What is AS174?
AS174 is an Autonomous System Number assigned to Cogent Communications, LLC. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS174 announce?
AS174 announces 25.00M IPv4 addresses distributed across 10,254 routed CIDR prefixes. The network is registered in United States.
Who operates AS174?
AS174 is operated by Cogent Communications, LLC. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS174 registered in?
AS174 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
