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  3. AS21877

AS21877

Computer Sciences Corporation

CSC-USA
Organization
Title
Computer Sciences Corporation
Details
Regional Internet registry
ARIN
IP Addresses count
13,568
Coordinates
Summary
The organization Computer Sciences Corporation allocates 11 IP netblocks under the autonomous system number (ASN ) of 21877. The regional internet registry (RIR ) for this ASN is ARIN. The country in which these IPs are located is United States of America (US), which is on #1 out of 249 countries by the total amount of ASNs allocated - 27,927.

AS21877 has 3 peers, 2 upstreams and 1 downstreams with a total of 13,568 IP addresses.
IP Address ranges
Block Description IPs count
15.176.32.0/20 HP-INTERNET 4,096
15.176.48.0/24 HP-INTERNET 256
20.132.0.0/20 REACH (Customer Route) 4,096
20.132.1.0/24 REACH (Customer Route) 256
20.132.230.0/24 REACH (Customer Route) 256
20.132.247.0/24 REACH (Customer Route) 256
20.137.176.0/20 REACH (Customer Route) 4,096
20.137.176.0/21 REACH (Customer Route) 2,048
20.137.184.0/21 REACH (Customer Route) 2,048
199.196.56.0/24 FCGIS-Nashville (FCGIS) 256
199.196.63.0/24 FCGIS-Nashville (FCGIS) 256
Peers
ASN Name IPs Count
AS3356 Level 3 Parent, LLC 38,461,440
AS7018 AT&T Services, Inc. 83,746,304
AS4237 Computer Sciences Corporation 90,880
Upstreams
ASN Name IPs Count
AS3356 Level 3 Parent, LLC 38,461,440
AS7018 AT&T Services, Inc. 83,746,304
Downstreams
ASN Name IPs Count
AS4237 Computer Sciences Corporation 90,880
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