Autonomous System
AS11951 Medical Computer Systems
BusinessActiveUnited StatesARIN
AS11951 (MCSP) is a business network operated by Medical Computer Systems in United States, registered with ARIN. It has 10 IPv4 prefixes with 38,656 addresses, which makes it the 4,837th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses38,656in 10 prefixes
IPv6 prefixes0none
Size rank#4,837of 82,200 active ASNs
Details
OrganizationMedical Computer Systems
AS nameMCSP
Websitemcsp.com
Country United States (US)
Network typeBusiness
RegistryARIN
Abuse contactpdw@mcsp.com
Registered1999-02-12
Last updated2021-07-14
IPv4 prefixes
10 prefixes · 38,656 addresses| Network | Addresses | First – last address |
|---|---|---|
| 207.152.128.0/18 | 16,384 | 207.152.128.0 – 207.152.191.255 |
| 205.147.160.0/19 | 8,192 | 205.147.160.0 – 205.147.191.255 |
| 209.50.192.0/19 | 8,192 | 209.50.192.0 – 209.50.223.255 |
| 66.186.128.0/20 | 4,096 | 66.186.128.0 – 66.186.143.255 |
| 204.152.42.0/23 | 512 | 204.152.42.0 – 204.152.43.255 |
| 66.186.129.0/24 | 256 | 66.186.129.0 – 66.186.129.255 |
| 204.152.42.0/24 | 256 | 204.152.42.0 – 204.152.42.255 |
| 207.152.134.0/24 | 256 | 207.152.134.0 – 207.152.134.255 |
| 207.152.135.0/24 | 256 | 207.152.135.0 – 207.152.135.255 |
| 209.50.193.0/24 | 256 | 209.50.193.0 – 209.50.193.255 |
207.152.128.0/18 205.147.160.0/19 209.50.192.0/19 66.186.128.0/20 204.152.42.0/23 66.186.129.0/24 204.152.42.0/24 207.152.134.0/24 207.152.135.0/24 209.50.193.0/24
IPv6 prefixes
No IPv6 prefixes.
Query AS11951 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS11951&key=YOUR_API_KEY"Any address in its prefixes resolves to AS11951, with or without a key:
curl "https://api.ipapi.is/?q=207.152.128.1"Largest networks in United States
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