Internet Technology Research Consortium operates AS2523: 10 IPv4 prefixes covering 61,952 addresses, most of them in 
Japan.
By IPv4 addresses the network ranks #3,581 worldwide and #175 of 848 networks in Japan. That is 0.03% of the country’s IPv4 space.
The largest block is 133.69.0.0 to 133.69.159.255 with 40,960 addresses, geolocated to Chiyoda City.
- IPv4 addresses
- 61,952
- IPv4 prefixes
- 10
- World rank
- #3,581
- Country share
- 0.03%
- IPv6 ranges
- 1
Addresses by country
- Japan 100%
Largest blocks
- 133.69.0.0 Chiyoda City40,960
- 133.69.185.0 Chiyoda City18,176
- 133.69.177.0 Chiyoda City1,792
- 133.69.164.0 Chiyoda City1,024
Networks of similar size
61,952
61,952
61,952
61,696
61,696IPv4 prefixes
Questions and answers
Who owns AS2523?
Autonomous system AS2523 is operated by Internet Technology Research Consortium.
How many IP addresses does AS2523 have?
The network holds 61,952 IPv4 addresses in 10 prefixes, plus 1 IPv6 ranges.
Which country is AS2523 in?
The main country is Japan.
How big is AS2523?
By IPv4 addresses it ranks #3,581 worldwide.
What is the largest address block of AS2523?
133.69.0.0 to 133.69.159.255, 40,960 addresses.