$ query “AS5050” --type=asn → 1 result(s)

AS5050 · PSC-EXT

Pittsburgh Supercomputing Center

AS5050 is run by Pittsburgh Supercomputing Center and is a mid-size transit provider, registered in the United States since 1995. The system announces a respectable 75 264 IPv4 addresses, including a /16, and supports IPv6. Most of its address space is geolocated to the United States.

  • Pioneer — Registered before the year 2000

Basic Information

Country
🇺🇸 United States
Category
Hosting
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
March 29, 1995
Last Changed
March 04, 2026
Last Seen
October 21, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
17 / 8
IPv6 Prefixes (raw / aggregated)
2 / 2
IPv4 Addresses
75 264
Largest IPv4 Prefix
/16 (65 536 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇺🇸 United States (75 264 IPs)
Prefix Changed
April 02, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
4 upstreams providing transit
Peers
5 networks exchanging traffic without transit
Downstream Customers
12 downstreams buying transit
Unclassified
2 unclassified BGP neighbors
Degree
23 unique BGP neighbors
Reach
16 networks in customer cone

Upstream Providers (4)

  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS174 — COGENT-174 (Tier-1 transit)
  • AS11164 — INTERNET2-I2PX
  • AS11537 — INTERNET2-RESEARCH-EDU

Prefix Lists

IPv4 Prefixes (17 total)

  • 147.73.0.0/16 (65 536 addresses (/16 prefix))
  • 104.128.208.0/20 (4 096 addresses (/20 prefix))
  • 167.88.240.0/20 (4 096 addresses (/20 prefix))
  • 192.88.114.0/23 (512 addresses (/23 prefix))
  • 147.72.249.0/24 (256 addresses (/24 prefix))
  • 192.70.222.0/24 (256 addresses (/24 prefix))
  • 192.112.102.0/24 (256 addresses (/24 prefix))
  • 192.231.244.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (2 total)

  • 2001:5e8::/32
  • 2620:72:4000::/48