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AS174
AS174 Cogent Communications, LLC
COGENT-174 - Cogent Communications, LLC · registered in the United States
IPv4 addresses 24,663,935 9,796 prefixes · 0.787% of announced IPv4
Rank in United States #9 largest network in US by IPv4 space, of 18,338 · 1.81% of US
Rank worldwide #15 of 79,396 networks with IPv4
IPv6 50 x /32 (3,293,234 x /48) 1,390 prefixes
Other ASNs named Cogent Communications, LLC
5 other networks use the same organisation name; together with AS174 they announce 24,683,135 IPv4 addresses.
ASN Name IPv4 addresses
AS4991 COGENT-4991-4994 - Cogent Communications, LLC US 16,384
AS1790 COGENT-1790 - Cogent Communications, LLC US 1,024
AS4550 COGENT-4550 - Cogent Communications, LLC US 1,024
AS1803 COGENT-1803 - Cogent Communications, LLC US 512
AS2149 COGENT-2149 - Cogent Communications, LLC US 256
Similar-sized networks in United States
ASN Name IPv4 addresses
AS701 #6 UUNET - Verizon Business40,608,768
AS721 #7 DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD)29,541,376
AS3356 #8 LEVEL3 - Level 3 Parent, LLC27,412,864
AS396982 #10 GOOGLE-CLOUD-PLATFORM - Google LLC22,019,072
AS14618 #11 AMAZON-AES - Amazon.com, Inc.21,573,120
AS6167 #12 CELLCO-PART - Verizon Business18,082,816
IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources