Autonomous system detail

AS122

Announced

Operated by UPMC-AS122 - UPMC.

Summary

// analyst note
A live healthcare enterprise network carrying clinical/administrative traffic from western Pennsylvania. The old 'University of Pittsburgh' label persists in some mirrors but the registered org is UPMC. RegDate 1987-08-21 (Confirmed ARIN).
// security note
NEUTRAL/DATED: no notable public abuse signal as of 2026-06-10; clean enterprise/healthcare network.
IPv4 prefixes
12
~271.6K addresses
IPv6 prefixes
1
announced
Peer networks
6
5 up · 0 down
IANA block
1-1876
Assigned by ARIN
[ 01 ] — Context

About this ASN.

Updated  ·  Confidence: High

AS122 is a legacy summer-1987 allocation registered under ARIN to UPMC, carrying the handle "UPMC-AS122." UPMC is a large integrated health system and insurer headquartered in Pittsburgh, PA; the historical label was "U-PGH-NET-AS / University of Pittsburgh Medical Center," and the registered org is now simply UPMC. The ARIN autnum RegDate is 1987-08-21 (org RegDate 1986-09-08; registry updated 2020-01-09). It is an actively-routed healthcare enterprise network, announcing 18 IPv4 prefixes totaling roughly 541,696 addresses plus 2 IPv6 prefixes (per ipapi.is), anchored on the legacy 128.147.0.0/16 block; PeeringDB classifies it as Enterprise, regional scope, 5–10 Gbps. bgp.tools describes it as a 37-year-old BGP network peering with 7 networks and 4 upstream carriers (IPinfo lists 5 upstreams — a minor source discrepancy). For triage this is a live healthcare enterprise network carrying clinical and administrative traffic from western Pennsylvania; the old "University of Pittsburgh" label persists in some mirrors but the registered org is UPMC. No notable public abuse signal was found as of June 2026 (abuse contact infosecabuse@upmc.edu).

Operator
UPMC (University of Pittsburgh Medical Center health system, Pittsburgh, PA) [Confirmed] — ARIN RDAP / PeeringDB
Country / RIR
US, ARIN [Confirmed]
Allocated
ARIN autnum RegDate 1987-08-21 (org RegDate 1986-09-08; registry updated 2020-01-09) [Confirmed]
Org status
active

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal as of 2026-06-10; abuse contact infosecabuse@upmc.edu — bgp.tools

Network & routing

Our research recorded 18 IPv4 prefixes; RIPEstat currently announces 12.
Network type
enterprise (healthcare) [Confirmed] — PeeringDB "Enterprise"
Size
18 IPv4 prefixes (~541,696 addrs) + 2 IPv6; anchored on 128.147.0.0/16 — ipapi.is (2026-06)
Routing/peering
active; ~7 peers, ~4 upstreams (bgp.tools; IPinfo lists 5 upstreams); PeeringDB regional, 5–10 Gbps; RPKI unknown — bgp.tools
Notable usage
[historical] "U-PGH-NET-AS / University of Pittsburgh Medical Center." [current] UPMC — a large integrated health system and insurer; carries clinical/administrative traffic from western PA — upmc.com
Related ASNs
none specifically confirmed for this profile
Analyst note
A live healthcare enterprise network carrying clinical/administrative traffic from western Pennsylvania. The old "University of Pittsburgh" label persists in some mirrors but the registered org is UPMC.
[ 02 ] — Announced prefixes

What this network routes.

13 prefixes total · RIPEstat data · cached, not real-time
// IPv4 prefixes12
  1. 151.195.0.0/16/16
  2. 150.232.0.0/16/16
  3. 128.147.0.0/16/16
  4. 157.229.0.0/16/16
  5. 205.223.240.0/20/20
  6. 198.55.8.0/21/21
  7. 198.136.8.0/21/21
  8. 198.184.147.0/24/24
  9. 198.177.199.0/24/24
  10. 128.147.75.0/24/24
  11. 157.229.75.0/24/24
  12. 192.80.29.0/24/24
// IPv6 prefixes1
  1. 2605:e900::/32/32
[ 03 ] — Notable peers & upstreams

Who it talks to.

6 observed neighbours
// Notable connectionsTop 6 of 6
ASNOperatorRole
AS3356 LEVEL3 - Level 3 Parent, LLC upstream
AS174 COGENT-174 - Cogent Communications, LLC upstream
AS6939 HURRICANE - Hurricane Electric LLC upstream
AS7016 CCCH-3 - Comcast Cable Communications, LLC upstream
AS701 UUNET - Verizon Business upstream
AS19151 BBO-1 - BroadbandONE, LLC peer
Neighbours observed via public BGP collectors; not a complete peering list.