AS1280 is the autonomous system of Internet Systems Consortium, Inc.. It holds 23,296 IPv4 addresses in 20 prefixes plus 6 IPv6 ranges, mainly in 
United States.
By IPv4 addresses the network ranks #5,661 worldwide and #1,991 of 18,202 networks in United States.
The largest block is 149.20.12.0 to 149.20.56.255 with 11,520 addresses, geolocated to Palo Alto (University South).
- IPv4 addresses
- 23,296
- IPv4 prefixes
- 20
- World rank
- #5,661
- IPv6 ranges
- 6
Addresses by country
- United States 100%
Largest blocks
- 149.20.12.0 Palo Alto (University South)11,520
- 149.20.72.0 Palo Alto (University South)4,352
- 204.152.184.0 Palo Alto2,048
- 149.20.58.0 Palo Alto (University South)2,048
- 149.20.90.0 Palo Alto (University South)1,536
- 149.20.6.0 Palo Alto (University South)768
- 192.158.252.0 Palo Alto256
- 192.111.107.0 Menlo Park (Suburban Park–Lorelei Manor–Flood Park Triangle)256
Networks of similar size
- AS9459 Konkuk University
23,296 - AS45058 Golden-Bridge Netcom communication Co.,LTD.
23,296 - AS262663 METROFLEX TELECOMUNICACOES LTDA
23,296 - AS10857 JCPenney23,296
- AS27047 DoD Network Information Center23,296
- AS22221 National General Management Corp.23,296
- AS10355 Digital Service Consultants23,296
- AS9526 KOSCOM23,040
IPv4 prefixes
Questions and answers
Who owns AS1280?
Autonomous system AS1280 is operated by Internet Systems Consortium, Inc..
How many IP addresses does AS1280 have?
The network holds 23,296 IPv4 addresses in 20 prefixes, plus 6 IPv6 ranges.
Which country is AS1280 in?
The main country is United States.
How big is AS1280?
By IPv4 addresses it ranks #5,661 worldwide.
What is the largest address block of AS1280?
149.20.12.0 to 149.20.56.255, 11,520 addresses.