AS195 San Diego Supercomputer Center

SDSC-AS - San Diego Supercomputer Center · registered in the United States

IPv4 addresses154,447203 prefixes · 0.005% of announced IPv4

Rank in United States#398largest network in US by IPv4 space, of 18,338 · 0.01% of US

Rank worldwide#1,297of 79,396 networks with IPv4

IPv647,104 x /4810 prefixes

CountryUnited States18,679 ASNs registered there

Open AS195 in ASN lookup Look up an IP in this network (44.8.5.1) All networks in United States

IPv4 prefixes

All 203 prefixes, in address order.

44.8.5.0/24
67.58.53.144/28
67.58.54.128/25
67.58.56.0/21
132.249.0.0/18
132.249.64.0/19
132.249.96.0/21
132.249.104.0/22
132.249.108.0/22
132.249.112.0/20
132.249.128.0/18
132.249.192.0/20
132.249.208.0/22
132.249.212.0/25
132.249.212.128/27
132.249.212.160/27
132.249.212.192/26
132.249.213.0/24
132.249.214.0/23
132.249.216.0/21
132.249.224.0/21
132.249.232.0/23
132.249.234.0/23
132.249.236.0/22
132.249.240.0/22
132.249.244.0/23
132.249.246.0/27
132.249.246.32/27
132.249.246.64/26
132.249.246.128/25
132.249.247.0/24
132.249.248.0/21
137.164.23.42/31
137.164.23.128/29
137.164.24.152/29
153.105.0.0/18
153.105.64.0/20
153.105.80.0/24
153.105.82.0/23
153.105.84.0/22
153.105.88.0/21
153.105.96.0/19
153.105.128.0/17
192.12.207.0/24
192.31.21.0/29
192.31.21.8/31
192.31.21.10/32
192.31.21.11/32
192.31.21.12/30
192.31.21.16/29
192.31.21.24/30
192.31.21.28/31
192.31.21.30/32
192.31.21.31/32
192.31.21.32/30
192.31.21.36/31
192.31.21.38/31
192.31.21.40/31
192.31.21.42/32
192.31.21.43/32
192.31.21.44/30
192.31.21.48/29
192.31.21.56/30
192.31.21.60/30
192.31.21.64/27
192.31.21.96/29
192.31.21.104/32
192.31.21.105/32
192.31.21.106/31
192.31.21.108/30
192.31.21.112/28
192.31.21.128/27
192.31.21.160/30
192.31.21.164/31
192.31.21.166/31
192.31.21.168/32
192.31.21.169/32
192.31.21.170/31
192.31.21.172/30
192.31.21.176/29
192.31.21.184/31
192.31.21.186/31
192.31.21.188/31
192.31.21.190/31
192.31.21.192/30
192.31.21.196/31
192.31.21.198/31
192.31.21.200/29
192.31.21.208/29
192.31.21.216/30
192.31.21.220/31
192.31.21.222/31
192.31.21.224/30
192.31.21.228/30
192.31.21.232/29
192.31.21.240/31
192.31.21.242/31
192.31.21.244/30
192.31.21.248/29
192.67.20.0/24
192.67.81.0/25
192.67.81.128/26
192.67.81.192/27
192.67.81.224/27
192.67.82.0/25
192.67.82.128/25
192.172.226.2/31
192.172.226.4/30
192.172.226.9/32
192.172.226.10/31
192.172.226.12/31
192.172.226.15/32
192.172.226.16/30
192.172.226.20/31
192.172.226.22/32
192.172.226.24/32
192.172.226.26/32
192.172.226.29/32
192.172.226.30/31
192.172.226.32/30
192.172.226.36/32
192.172.226.38/32
192.172.226.40/31
192.172.226.46/31
192.172.226.49/32
192.172.226.50/31
192.172.226.52/32
192.172.226.54/32
192.172.226.59/32
192.172.226.60/32
192.172.226.64/31
192.172.226.68/32
192.172.226.72/31
192.172.226.78/31
192.172.226.82/31
192.172.226.85/32
192.172.226.86/31
192.172.226.89/32
192.172.226.92/30
192.172.226.96/31
192.172.226.100/32
192.172.226.102/31
192.172.226.106/32
192.172.226.108/31
192.172.226.115/32
192.172.226.117/32
192.172.226.118/31
192.172.226.121/32
192.172.226.122/32
192.172.226.124/32
192.172.226.126/31
192.172.226.128/32
192.172.226.132/31
192.172.226.136/31
192.172.226.140/31
192.172.226.146/31
192.172.226.148/31
192.172.226.151/32
192.172.226.154/31
192.172.226.158/32
192.172.226.172/32
192.172.226.175/32
192.172.226.177/32
192.172.226.193/32
192.172.226.194/32
192.172.226.199/32
192.172.226.205/32
192.172.226.206/31
192.172.226.209/32
192.172.226.210/31
192.172.226.233/32
192.172.226.236/32
192.172.226.238/32
192.172.226.242/32
192.172.226.246/31
192.172.226.249/32
192.207.234.0/24
198.17.46.0/23
198.17.101.0/26
198.17.101.64/28
198.17.101.80/28
198.17.101.96/27
198.17.101.128/25
198.187.222.0/25
198.187.222.128/26
198.187.222.192/26
198.188.136.0/26
198.202.64.0/24
198.202.71.0/24
198.202.72.0/21
198.202.80.0/20
198.202.96.0/21
198.202.104.0/22
198.202.108.0/23
198.202.110.0/24
198.202.111.0/24
198.202.112.0/21
198.202.120.0/22
198.202.126.0/23
199.165.16.0/23
199.165.18.0/23
199.165.20.0/22
199.165.24.0/21

IPv6 prefixes

All 10 prefixes.

2001:48d0::/34
2001:48d0:4000::/36
2001:48d0:5800::/37
2001:48d0:6000::/35
2001:48d0:8000::/34
2607:f380:1::118:9a41:72a0/123
2607:f380:1::118:9a41:7340/122
2607:f380:1::118:9a41:7800/122
2607:f380:1::118:9a41:7b00/123
2607:f380:1::118:9a41:8980/122

Other ASNs named San Diego Supercomputer Center

1 other network uses the same organisation name; together with AS195 they announce 154,594 IPv4 addresses.

ASNNameIPv4 addresses

AS1909CAIDA - San Diego Supercomputer Center US147

Similar-sized networks in United States

ASNNameIPv4 addresses

AS27142#395 DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD)155,904

AS1767#396 ILIGHT-NET - Indiana Higher Education Telecommunication System (IHETS)155,126

AS8796#397 FD-298-8796 - FASTNET DATA INC154,880

AS14041#399 AS-FRGP - University Corporation for Atmospheric Research153,600

AS399#400 AFCONC-BLOCK1-AS - Air Force Systems Networking153,600

AS22709#401 NSTELCO - North State Telephone, LLC152,832

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