AS393937 Medical Card System, Inc.

MCS-PUBLIC-NET - Medical Card System, Inc. · registered in Puerto Rico

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in Puerto Rico#80largest network in PR by IPv4 space, of 96 · 0.03% of PR

Rank worldwide#77,400of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryPuerto Rico96 ASNs registered there

Open AS393937 in ASN lookup Look up an IP in this network (192.107.111.1) All networks in Puerto Rico

IPv4 prefixes

All 1 prefix, in address order.

192.107.111.0/24

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AS395902#82 GRUPO-TRIPLE-S - TRIPLE - S SALUD,INC256

AS397598#83 GONET - OSNET256

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources