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Autonomous System Number 11951 : MCSP (United States of America)

🖥 Autonomous System Number 11951 : MCSP (United States of America)

Autonomous System (AS) number AS11951 is managed by MCSP, an organization based in United States of America. Specific details about this AS are provided below. This data was last updated on: 2026-04-20T16:27:01.

United States of America (US) IP Address
IP Network - AS11951
Address Range: AS11951
Network Name: MCSP
Events: last changedregistration
ClassName: autnum
Notices:
Terms Of Service: By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use
https://www.arin.net/resources/registry/whois/tou/ ( Terms-of-service )
Whois Inaccuracy Reporting: By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use
If you see inaccuracies in the results, please visit:
https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ ( Inaccuracy-report )
Copyright Notice: By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use
If you see inaccuracies in the results, please visit:
Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
Status: Active
Links: https://rdap.arin.net/registry/autnum/11951 ( Self )
https://whois.arin.net/rest/asn/AS11951 ( Alternate )
Whois Server: whois.arin.net
Conformance: nro_rdap_profile_0, rdap_level_0, nro_rdap_profile_asn_flat_0

entity- MDCS
Handle: MDCS
Roles: Registrant
Events: last changed : 2011-09-24T08:30:57-04:00
registration : 1997-04-04T00:00:00-05:00
Links: https://rdap.arin.net/registry/entity/MDCS ( Self )
https://whois.arin.net/rest/org/MDCS ( Alternate )
Version: 4.0
Name: Medical Computer Systems
kind: Org
Address: 1729 21st Street, NW Washington DC 20009 United States

entity- PW25-ARIN
Handle: PW25-ARIN
Roles: Abuse, Noc, Technical
Events: last changed : 2026-04-16T10:10:25-04:00
registration : 1994-01-11T14:10:46-05:00
Links: https://rdap.arin.net/registry/entity/PW25-ARIN ( Self )
https://whois.arin.net/rest/poc/PW25-ARIN ( Alternate )
Version: 4.0
Name: Paul Wolotsky
kind: Individual
Phone: +1-866-814-9543
Email: pdw@mcsp.com

🖥 IP Address Ranges for AS11951

The following is a list of all IP address ranges that belong to Autonomous System AS11951. Each entry shows the starting IP of the range and the total number of IPs it contains.

Network Start IP End IP Number of IP
204.152.42.0/23 204.152.42.0 204.152.43.255 512
205.147.160.0/19 205.147.160.0 205.147.191.255 8192
207.152.128.0/18 207.152.128.0 207.152.191.255 16384
209.50.192.0/19 209.50.192.0 209.50.223.255 8192
66.186.128.0/20 66.186.128.0 66.186.143.255 4096

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