AS23631 is the autonomous system of Sofu System, Inc. It holds 6,144 IPv4 addresses in 2 prefixes plus 1 IPv6 ranges, mainly in 
Japan.
By IPv4 addresses the network ranks #12,530 worldwide and #392 of 848 networks in Japan.
The largest block is 210.236.208.0 to 210.236.223.255 with 4,096 addresses, geolocated to Nagaoka (2 Chome).
- IPv4 addresses
- 6,144
- IPv4 prefixes
- 2
- World rank
- #12,530
- IPv6 ranges
- 1
Addresses by country
- Japan 100%
Largest blocks
- 210.236.208.0 Nagaoka (2 Chome)4,096
- 202.243.120.0 Chiyoda City2,048
Networks of similar size
6,144
6,144IPv4 prefixes
Questions and answers
Who owns AS23631?
Autonomous system AS23631 is operated by Sofu System, Inc.
How many IP addresses does AS23631 have?
The network holds 6,144 IPv4 addresses in 2 prefixes, plus 1 IPv6 ranges.
Which country is AS23631 in?
The main country is Japan.
How big is AS23631?
By IPv4 addresses it ranks #12,530 worldwide.
What is the largest address block of AS23631?
210.236.208.0 to 210.236.223.255, 4,096 addresses.