Arkansas Research and Education Optical Network operates AS40581: 11 IPv4 prefixes covering 73,472 addresses, most of them in 
United States.
By IPv4 addresses the network ranks #2,343 worldwide and #740 of 18,202 networks in United States.
The largest block is 161.31.0.0 to 161.31.255.255 with 65,536 addresses, geolocated to Conway.
- IPv4 addresses
- 73,472
- IPv4 prefixes
- 11
- World rank
- #2,343
- IPv6 ranges
- 2
Addresses by country
- United States 100%
Largest blocks
- 161.31.0.0 Conway65,536
- 147.97.12.0 Kansas City3,072
- 208.90.104.0 East Camden2,048
- 159.150.4.0 Fayetteville1,024
- 147.97.30.0 Kansas City512
- 198.181.240.0 Fayetteville256
- 198.181.214.0 Fayetteville256
- 147.97.8.0 Kansas City256
Networks of similar size
- AS10715 Universidade Federal de Santa Catarina
73,728 - AS8741 Ratiokontakt GmbH
73,728 - AS9142 Internexus Networks Limited
73,728 - AS45430 ADVANCED WIRELESS NETWORK COMPANY LIMITED
73,472 - AS55374 FUJITSU LIMITED
73,472 - AS10546 Mississippi State University73,216
- AS2033 Panix73,216
- AS51561 ICUK Computing Services Limited72,960
IPv4 prefixes
Questions and answers
Who owns AS40581?
Autonomous system AS40581 is operated by Arkansas Research and Education Optical Network.
How many IP addresses does AS40581 have?
The network holds 73,472 IPv4 addresses in 11 prefixes, plus 2 IPv6 ranges.
Which country is AS40581 in?
The main country is United States.
How big is AS40581?
By IPv4 addresses it ranks #2,343 worldwide.
What is the largest address block of AS40581?
161.31.0.0 to 161.31.255.255, 65,536 addresses.