131.81.0.0/16

ip:	131.81.0.0 
loc:	United States, Columbus (Ohio)  
isp:	AS721 United States Department of Defense (DoD) » DoD Network Information Center » United States Department of Defense 551.336 ms
route:	131.81.0.0/16, USDDD - United States Department of Defense (DoD), US (Columbus) ... 
reg:	131.81.0.0/16, US, ARIN, 1988-10-25
addr:	  3990 E. Broad Street Columbus OH 43218 US

see also:
   131.80.0.0/14    AS721    DNIC-RNET-131-080 DoD Network Information Center, US
   131.81.2.0/23    AS27046  DGSC DoD Network Information Center, US
   131.81.5.0/24    AS27046  DGSC DoD Network Information Center, US
   131.81.9.0/24    AS27046  DGSC DoD Network Information Center, US
   131.81.10.0/24   AS27046  DGSC DoD Network Information Center, US
   131.81.17.0/24   AS27046  DGSC DoD Network Information Center, US
   131.81.20.0/22   AS27046  DGSC DoD Network Information Center, US
   131.81.24.0/22   AS27046  DGSC DoD Network Information Center, US
   131.81.28.0/22   AS27046  DGSC DoD Network Information Center, US
   131.81.32.0/22   AS27046  DGSC DoD Network Information Center, US
   131.81.36.0/22   AS27046  DGSC DoD Network Information Center, US
   131.81.40.0/22   AS27046  DGSC DoD Network Information Center, US
   131.81.44.0/22   AS27046  DGSC DoD Network Information Center, US
   131.81.48.0/22   AS27046  DGSC DoD Network Information Center, US
   131.81.52.0/22   AS27046  DGSC DoD Network Information Center, US
   131.81.56.0/22   AS27046  DGSC DoD Network Information Center, US
   131.81.60.0/22   AS27046  DGSC DoD Network Information Center, US
   131.81.64.0/22   AS27046  DGSC DoD Network Information Center, US
   131.81.89.0/24   AS27046  DGSC DoD Network Information Center, US
   131.81.90.0/23   AS27046  DGSC DoD Network Information Center, US