AS40515 Athenahealth

AS-CMH1-1 - Athenahealth · registered in the United States

IPv4 addresses1,0241 prefixes · <0.001% of announced IPv4

Rank in United States#8,600largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#37,390of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS40515 in ASN lookup Look up an IP in this network (216.162.40.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

216.162.40.0/22

Other ASNs named Athenahealth

4 other networks use the same organisation name; together with AS40515 they announce 7,424 IPv4 addresses.

ASNNameIPv4 addresses

AS36738AS-NVA1-1 - Athenahealth US2,816

AS46903AS-RCH1-1 - Athenahealth US2,560

AS54593ATHEN-EPOC - Athenahealth US768

AS11174AS-ATHEN-1 - Athenahealth US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS40481#8597 G3-ASN-1 - G3 Group1,024

AS40493#8598 GAYLORD PACIFIC IP MANAGEMENT - Gaylord Pacific Resort and Convention Center1,024

AS40502#8599 AAA-ACS - The Auto Club Group1,024

AS40552#8601 FBMC-HQ - Fringe Benefits Management Company1,024

AS40553#8602 CUYAHOGA-COUNTY - Cuyahoga County Information Services center1,024

AS40558#8603 AS-WPI - WorldPoint Communications, Inc.1,024

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