Japan Atomic Energy Agency operates AS4729: 2 IPv4 prefixes covering 131,072 addresses, most of them in 
Japan.
By IPv4 addresses the network ranks #1,566 worldwide and #69 of 848 networks in Japan. That is 0.06% of the country’s IPv4 space.
The largest block is 133.188.0.0 to 133.188.255.255 with 65,536 addresses, geolocated to Chiyoda City.
- IPv4 addresses
- 131,072
- IPv4 prefixes
- 2
- World rank
- #1,566
- Country share
- 0.06%
Addresses by country
- Japan 100%
Largest blocks
- 133.188.0.0 Chiyoda City65,536
- 133.53.0.0 Chiyoda City65,536
Networks of similar size
- AS1926 Tampere University Foundation
131,072 - AS38635 Keio University131,072
- AS16519 University of Colorado Denver
131,072 - AS1307 Renater
131,072 - AS63802 Nippon Telegraph and Telephone East Corporation131,072
- AS9355 National Institute of Information and Communications Technology131,072
- AS14702 Idaho National Laboratory131,072
- AS19530 State of North Dakota, ITD131,072
IPv4 prefixes
Questions and answers
Who owns AS4729?
Autonomous system AS4729 is operated by Japan Atomic Energy Agency.
How many IP addresses does AS4729 have?
The network holds 131,072 IPv4 addresses in 2 prefixes.
Which country is AS4729 in?
The main country is Japan.
How big is AS4729?
By IPv4 addresses it ranks #1,566 worldwide.
What is the largest address block of AS4729?
133.188.0.0 to 133.188.255.255, 65,536 addresses.