AS11951 - MCSP - Medical Computer Systems, US

United States
AS Number
AS11951
AS Name
MCSP
Org Name
Medical Computer Systems
Country / Region
United States
Registry

arin

RegDate

1997-04-04

Updated

2026-06-11

AS11951 Looking Glass
IPv4Prefixes

11

IPv6Prefixes

0

IPv4 NUMs

37,376

IPv6 NUMs(/64)

0

CIDR Description IP Num
66.186.128.0/20
IRR Valid
Lan2Wan, Inc. 4096
66.186.129.0/24
IRR Parent Valid
Lan2Wan, Inc. 256
204.152.42.0/24
IRR Parent Valid
Management Analsysis, Inc. 256
204.152.42.0/23
IRR Valid
Management Analsysis, Inc. 512
204.152.43.0/24
IRR Parent Valid
Management Analsysis, Inc. 256
205.147.160.0/19
IRR Valid
Sytex Access Ltd. 8192
207.152.128.0/18
IRR Valid
MAI Network Services 16384
207.152.134.0/24
IRR Parent Valid
MAI Network Services 256
207.152.135.0/24
IRR Parent Valid
MAI Network Services 256
209.50.192.0/19
IRR Valid
Medical Computer Systems 8192
209.50.193.0/24
IRR Parent Valid
Medical Computer Systems 256
AS Description Country / Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS174 COGENT-174 - Cogent Communications, LLC, US United States 36,233,472 215,834,689,537 IPv4 IPv4
AS1239 COGENT-1239 - Cogent Communications, LLC, US United States 0 210,729,631,744 IPv4 IPv4
AS33657 CMCS - Comcast Cable Communications, LLC, US United States 11,776 558,364,622,848 IPv4 IPv4 
ASNumber:       11951
ASName:         MCSP
ASHandle:       AS11951
RegDate:        1999-02-12
Updated:        2021-07-14
Ref:            https://rdap.arin.net/registry/autnum/11951

OrgID:          MDCS
OrgName:        Medical Computer Systems
CanAllocate:    
Street:         1729 21st Street, NW
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20009
RegDate:        1997-04-04
Updated:        2026-06-11
OrgAdminHandle  PW25-ARIN
OrgTechHandle   PW25-ARIN
OrgAbuseHandle  PW25-ARIN
Source:         ARIN

OrgAdminHandleHandle:  PW25-ARIN
OrgAdminHandleName:    Wolotsky, Paul
OrgAdminHandlePhone:   +1-949-365-1249
OrgAdminHandleEmail:   [email protected]
OrgAdminHandleRef:     https://rdap.arin.net/registry/entity/PW25-ARIN

OrgTechHandleHandle:  PW25-ARIN
OrgTechHandleName:    Wolotsky, Paul
OrgTechHandlePhone:   +1-949-365-1249
OrgTechHandleEmail:   [email protected]
OrgTechHandleRef:     https://rdap.arin.net/registry/entity/PW25-ARIN

OrgAbuseHandleHandle:  PW25-ARIN
OrgAbuseHandleName:    Wolotsky, Paul
OrgAbuseHandlePhone:   +1-949-365-1249
OrgAbuseHandleEmail:   [email protected]
OrgAbuseHandleRef:     https://rdap.arin.net/registry/entity/PW25-ARIN

RTechHandleHandle:  PW25-ARIN
RTechHandleName:    Wolotsky, Paul
RTechHandlePhone:   +1-949-365-1249
RTechHandleEmail:   [email protected]
RTechHandleRef:     https://rdap.arin.net/registry/entity/PW25-ARIN

RAbuseHandleHandle:  PW25-ARIN
RAbuseHandleName:    Wolotsky, Paul
RAbuseHandlePhone:   +1-949-365-1249
RAbuseHandleEmail:   [email protected]
RAbuseHandleRef:     https://rdap.arin.net/registry/entity/PW25-ARIN

RNOCHandleHandle:  PW25-ARIN
RNOCHandleName:    Wolotsky, Paul
RNOCHandlePhone:   +1-949-365-1249
RNOCHandleEmail:   [email protected]
RNOCHandleRef:     https://rdap.arin.net/registry/entity/PW25-ARIN