AT TOKYO Corporation operates AS9999: 10 IPv4 prefixes covering 20,224 addresses, most of them in 
Japan.
By IPv4 addresses the network ranks #6,114 worldwide and #266 of 848 networks in Japan.
The largest block is 219.99.128.0 to 219.99.143.255 with 4,096 addresses, geolocated to Chiyoda City.
- IPv4 addresses
- 20,224
- IPv4 prefixes
- 10
- World rank
- #6,114
- IPv6 ranges
- 1
Addresses by country
- Japan 100%
Largest blocks
- 219.99.128.0 Chiyoda City4,096
- 211.132.0.0 Chiyoda City4,096
- 165.100.192.0 Chiyoda City4,096
- 203.223.24.0 Koto-ku2,048
- 119.59.64.0 Koto-ku2,048
- 203.89.128.0 Koto-ku1,024
- 202.13.124.0 Chiyoda City1,024
- 110.44.20.0 Koto-ku1,024
Networks of similar size
20,224
20,224
20,224
20,224
20,224
20,224
20,224IPv4 prefixes
Questions and answers
Who owns AS9999?
Autonomous system AS9999 is operated by AT TOKYO Corporation.
How many IP addresses does AS9999 have?
The network holds 20,224 IPv4 addresses in 10 prefixes, plus 1 IPv6 ranges.
Which country is AS9999 in?
The main country is Japan.
How big is AS9999?
By IPv4 addresses it ranks #6,114 worldwide.
What is the largest address block of AS9999?
219.99.128.0 to 219.99.143.255, 4,096 addresses.