Organization
Medical Card System, Inc.
MCS-PUBLIC-NET
Registered
Apr 30, 2015
11 years ago
IPv4 Prefixes
1
256 addresses
IPv6 Prefixes
0
BGP Neighbours
1
1 upstream/peer · 0 downstream
Registration
AS Number AS393937 AS Name MCS-PUBLIC-NET Organization Medical Card System, Inc. Organization ID MCS-305 Address 255 Ponce De Leon Ave, San Juan, PR, 00917, Puerto Rico Country Puerto Rico (PR) Registry ARIN Allocated Apr 30, 2015 Record Created Apr 30, 2015 Last Updated Sep 08, 2026 Status
active
WHOIS Server whois.arin.net AS Description MCS-PUBLIC-NET - Medical Card System, Inc., PR Abuse Email [email protected] Abuse Phone +1-787-758-2500;ext5966 IPv4 Prefixes
1 prefix · 256 addresses Routing data as of 2026-10-08 08:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 192.107.111.0/24 | 192.107.111.0 – 192.107.111.255 | 256 |
IPv6 Prefixes
This AS does not currently announce any IPv6 prefixes.
BGP Neighbours
1 unique neighbour · 1 upstream/peer · 0 downstream. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries. Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers. Upstream & peer side (1)
AS Name AS paths IPv4 sightings IPv6 sightings AS14638 LCPRL - Liberty Communications of Puerto Rico LLC 262 331 0
Raw RDAP Response
{
"endAutnum": 393937,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-27T13:49:58-04:00"
},
{
"eventAction": "registration",
"eventDate": "2015-01-15T09:55:26-05:00"
}
],
"handle": "NETAD216-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NETAD216-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/393937"
},
{
"href": "https://whois.arin.net/rest/poc/NETAD216-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/393937"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"noc",
"abuse",
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "255 Ponce De Leon Ave. MCS Plaza\nSan Juan\nPR\n00917\nPuerto Rico"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Netadmins"
],
[
"org",
{},
"text",
"MCS HealthCare Holdings, LLC"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-787-758-2500;ext5966"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2015-01-16T10:23:16-05:00"
},
{
"eventAction": "registration",
"eventDate": "2015-01-16T10:23:16-05:00"
}
],
"handle": "MCS-305",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MCS-305",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/393937"
},
{
"href": "https://whois.arin.net/rest/org/MCS-305",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/393937"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Medical Card System, Inc."
],
[
"adr",
{
"label": "255 Ponce De Leon Ave\nSan Juan\nPR\n00917\nPuerto Rico"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-08T18:22:29-04:00"
},
{
"eventAction": "registration",
"eventDate": "2015-04-30T15:42:14-04:00"
}
],
"handle": "AS393937",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/393937",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/393937"
},
{
"href": "https://whois.arin.net/rest/asn/AS393937",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/393937"
}
],
"name": "MCS-PUBLIC-NET",
"notices": [
{
"description": [
"By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/tou/",
"rel": "terms-of-service",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/393937"
}
],
"title": "Terms of Service"
},
{
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/",
"rel": "inaccuracy-report",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/393937"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "autnum",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"nro_rdap_profile_asn_flat_0"
],
"startAutnum": 393937,
"status": [
"active"
]
} Contact details of private individuals are redacted.