DoD Network Information Center

Autonomous Systems are networks typically governed by large ISPs that participate in global Internet routing. Each network is assigned a unique identification number known as the AS number or ASN by the Internet Assigned Numbers Authority.

ASN	340
Name	DNIC-ASBLK-00306-00371
Organization	DoD Network Information Center
Country	United States
Registry	ARIN

IPv4 addresses	221,952
IPv6 /64 networks	224
Prefixes	9

IPv4 Prefixes for AS340

Network		Location	Addresses
55.40.0.0/16	DoD Network Information Center	Columbus	65,536
55.40.242.0/24	DoD Network Information Center	Columbus	256
55.40.255.0/24	DoD Network Information Center	Columbus	256
55.73.0.0/16	DoD Network Information Center	Columbus	65,536
55.86.0.0/16	DoD Network Information Center	Columbus	65,536
55.86.128.0/18	DoD Network Information Center	Columbus	16,384
55.86.50.0/24	DoD Network Information Center	Columbus	256
55.86.96.0/19	DoD Network Information Center	Columbus	8,192

IPv6 Prefixes for AS340

Network		Location	/64 Prefixes
2608:14b:4500::/40	United States Department of Defense (DoD)	Columbus	224