AS122 UPMC

UPMC-AS122 - UPMC · registered in the United States

IPv4 addresses270,84828 prefixes · 0.009% of announced IPv4

Rank in United States#254largest network in US by IPv4 space, of 18,338 · 0.02% of US

Rank worldwide#881of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryUnited States18,679 ASNs registered there

Open AS122 in ASN lookup Look up an IP in this network (128.147.0.1) All networks in United States

IPv4 prefixes

All 28 prefixes, in address order.

128.147.0.0/18
128.147.64.0/21
128.147.72.0/22
128.147.76.0/22
128.147.80.0/20
128.147.96.0/19
128.147.128.0/17
150.232.0.0/16
151.195.0.0/16
157.229.0.0/18
157.229.64.0/21
157.229.72.0/22
157.229.76.0/22
157.229.80.0/20
157.229.96.0/19
157.229.128.0/19
157.229.160.0/20
157.229.176.0/21
157.229.184.0/22
157.229.188.0/23
157.229.191.0/24
157.229.192.0/18
192.80.29.0/24
198.55.8.0/21
198.136.8.0/21
198.177.199.0/24
198.184.147.0/24
205.223.240.0/20

IPv6 prefixes

All 1 prefix.

2605:e900::/32

Other ASNs named UPMC

2 other networks use the same organisation name; together with AS122 they announce 271,616 IPv4 addresses.

ASNNameIPv4 addresses

AS394612UPMC-PINNACLE - UPMC US512

AS40742WESTERN-MD-HEALTH-SYSTEM - UPMC US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS127#251 JPL-AS127 - Jet Propulsion Laboratory275,456

AS35986#252 VYVE-BROADBAND - Vyve Broadband274,176

AS2386#253 INS-AS - AT&T Enterprises, LLC272,128

AS5180#255 DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD)270,848

AS409#256 AFCONC-BLOCK1-AS - Air Force Systems Networking269,312

AS18779#257 EGIHOSTING - EGIHosting268,800

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