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AS1909 San Diego Supercomputer Center

CAIDA - San Diego Supercomputer Center · registered in the United States

IPv4 addresses14776 prefixes · <0.001% of announced IPv4
Rank in United States#18,332largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide#79,383of 79,396 networks with IPv4
IPv62,048 x /481 prefixes
CountryUnited States18,679 ASNs registered there
Open AS1909 in ASN lookup Look up an IP in this network (192.172.226.1) All networks in United States

IPv4 prefixes

All 76 prefixes, in address order.

  • 192.172.226.0/31
  • 192.172.226.8/32
  • 192.172.226.14/32
  • 192.172.226.23/32
  • 192.172.226.25/32
  • 192.172.226.27/32
  • 192.172.226.28/32
  • 192.172.226.37/32
  • 192.172.226.39/32
  • 192.172.226.42/31
  • 192.172.226.44/31
  • 192.172.226.48/32
  • 192.172.226.53/32
  • 192.172.226.55/32
  • 192.172.226.56/31
  • 192.172.226.58/32
  • 192.172.226.61/32
  • 192.172.226.62/31
  • 192.172.226.66/31
  • 192.172.226.69/32
  • 192.172.226.70/31
  • 192.172.226.74/31
  • 192.172.226.76/31
  • 192.172.226.80/31
  • 192.172.226.84/32
  • 192.172.226.88/32
  • 192.172.226.90/31
  • 192.172.226.98/31
  • 192.172.226.101/32
  • 192.172.226.104/31
  • 192.172.226.107/32
  • 192.172.226.110/31
  • 192.172.226.112/31
  • 192.172.226.114/32
  • 192.172.226.116/32
  • 192.172.226.120/32
  • 192.172.226.123/32
  • 192.172.226.125/32
  • 192.172.226.129/32
  • 192.172.226.130/31
  • 192.172.226.134/31
  • 192.172.226.138/31
  • 192.172.226.142/31
  • 192.172.226.144/31
  • 192.172.226.150/32
  • 192.172.226.152/31
  • 192.172.226.156/31
  • 192.172.226.159/32
  • 192.172.226.160/29
  • 192.172.226.168/30
  • 192.172.226.173/32
  • 192.172.226.174/32
  • 192.172.226.176/32
  • 192.172.226.178/31
  • 192.172.226.180/30
  • 192.172.226.184/29
  • 192.172.226.192/32
  • 192.172.226.195/32
  • 192.172.226.196/31
  • 192.172.226.198/32
  • 192.172.226.200/30
  • 192.172.226.204/32
  • 192.172.226.208/32
  • 192.172.226.212/30
  • 192.172.226.216/29
  • 192.172.226.224/29
  • 192.172.226.232/32
  • 192.172.226.234/31
  • 192.172.226.237/32
  • 192.172.226.239/32
  • 192.172.226.240/31
  • 192.172.226.243/32
  • 192.172.226.244/31
  • 192.172.226.248/32
  • 192.172.226.250/31
  • 192.172.226.252/30

IPv6 prefixes

All 1 prefix.

  • 2001:48d0:5000::/37

Other ASNs named San Diego Supercomputer Center

1 other network uses the same organisation name; together with AS1909 they announce 154,594 IPv4 addresses.

ASNNameIPv4 addresses
AS195SDSC-AS - San Diego Supercomputer Center US154,447

Similar-sized networks in United States

ASNNameIPv4 addresses
AS403123#18329 FIBERLABS - Fiber256
AS403139#18330 BRISTOL-TRADING-CO - Bristol256
AS403141#18331 ZETIXIO - Zetixio256
AS63256#18333 NYSBC - New York Structural Biology Center, Inc.128
AS33585#18334 NEWPORTBEACH-ASN01 - City of Newport Beach34
AS3939#18335 NTTA-3936 - NTT America, Inc.32

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