AS6646 Aetna, Inc.

AETNA - Aetna, Inc. · registered in the United States

IPv4 addresses16,38416 prefixes · <0.001% of announced IPv4

Rank in United States#2,350largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#6,990of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS6646 in ASN lookup Look up an IP in this network (206.213.192.1) All networks in United States

IPv4 prefixes

All 16 prefixes, in address order.

206.213.192.0/20
206.213.208.0/23
206.213.210.0/23
206.213.212.0/23
206.213.214.0/23
206.213.216.0/21
206.213.224.0/21
206.213.232.0/23
206.213.234.0/23
206.213.236.0/22
206.213.240.0/22
206.213.244.0/23
206.213.246.0/24
206.213.247.0/24
206.213.248.0/22
206.213.252.0/22

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AS4991#2348 COGENT-4991-4994 - Cogent Communications, LLC16,384

AS5101#2349 LEECOUNTYSCHOOLS - The School District of Lee County16,384

AS8067#2351 WSCNET-AS - Westfield State University16,384

AS10732#2352 TIERRANET - TierraNet Inc.16,384

AS11579#2353 LANLINE - LANline Communications Inc16,384

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