AS11951 Medical Computer Systems 🇺🇸 US

Announcing 10 prefixes, seen at the RIS collectors.

IPv4 prefixes

38,656 (151 × /24)

IPv6 prefixes

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

ASes reachable through it

Registry and operator data

AS number: AS11951
Name: Medical Computer Systems
Organisation: Medical Computer Systems
Country: 🇺🇸 US
RIR: ARIN
Allocated: 1999-02-12

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

0 valid (0.0%) 0 invalid (0.0%) 10 no ROA (100.0%)

Whois

Fetched from whois.arin.net

ASNumber:       11951
ASName:         MCSP
ASHandle:       AS11951
RegDate:        1999-02-12
Updated:        2021-07-14
Ref:            https://rdap.arin.net/registry/autnum/11951

OrgName:        Medical Computer Systems
OrgId:          MDCS
Address:        1729 21st Street, NW
City:           Washington
StateProv:      DC
PostalCode:     20009
Country:        US
RegDate:        1997-04-04
Updated:        2026-06-11
Ref:            https://rdap.arin.net/registry/entity/MDCS

OrgTechHandle: PW25-ARIN
OrgTechName:   Wolotsky, Paul
OrgTechPhone:  +1-949-365-1249
OrgTechEmail:  pdw@mcsp.com
OrgTechRef:    https://rdap.arin.net/registry/entity/PW25-ARIN

OrgAbuseHandle: PW25-ARIN
OrgAbuseName:   Wolotsky, Paul
OrgAbusePhone:  +1-949-365-1249
OrgAbuseEmail:  pdw@mcsp.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/PW25-ARIN

RTechHandle: PW25-ARIN
RTechName:   Wolotsky, Paul
RTechPhone:  +1-949-365-1249
RTechEmail:  pdw@mcsp.com
RTechRef:    https://rdap.arin.net/registry/entity/PW25-ARIN

RAbuseHandle: PW25-ARIN
RAbuseName:   Wolotsky, Paul
RAbusePhone:  +1-949-365-1249
RAbuseEmail:  pdw@mcsp.com
RAbuseRef:    https://rdap.arin.net/registry/entity/PW25-ARIN

RNOCHandle: PW25-ARIN
RNOCName:   Wolotsky, Paul
RNOCPhone:  +1-949-365-1249
RNOCEmail:  pdw@mcsp.com
RNOCRef:    https://rdap.arin.net/registry/entity/PW25-ARIN