AS46903 Athenahealth

AS-RCH1-1 - Athenahealth · registered in the United States

IPv4 addresses2,5603 prefixes · <0.001% of announced IPv4

Rank in United States#5,711largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#20,187of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS46903 in ASN lookup Look up an IP in this network (162.220.216.1) All networks in United States

IPv4 prefixes

All 3 prefixes, in address order.

162.220.216.0/24
162.220.218.0/24
198.36.120.0/21

Other ASNs named Athenahealth

4 other networks use the same organisation name; together with AS46903 they announce 7,424 IPv4 addresses.

ASNNameIPv4 addresses

AS36738AS-NVA1-1 - Athenahealth US2,816

AS40515AS-CMH1-1 - Athenahealth US1,024

AS54593ATHEN-EPOC - Athenahealth US768

AS11174AS-ATHEN-1 - Athenahealth US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS46266#5708 MARIANU-IN - Marian University2,560

AS46347#5709 CAROLINAWEST-WIRELESS - Carolina West Wireless2,560

AS46413#5710 FULAIR - Fulair, LLC2,560

AS51447#5712 ROOTLAYERNET RootLayer Web Services LLC2,560

AS53421#5713 TROYOHIO-TROYSCHOOLS - Troy City School District2,560

AS53567#5714 VOLSTATE - VOLstate, LLC2,560

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