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Autonomous System

AS393937

Medical Card System, Inc.

Announced IPs
256
CIDR prefixes
1
ASN
AS393937

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

65/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
192.107.111.0/24 256
0.0%
Medical Card System, Inc. PR

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS393937 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
192.107.111.0/24 50,182 2026-07-24 13:08:58

Frequently Asked Questions

What is AS393937?

AS393937 is an Autonomous System Number assigned to Medical Card System, Inc.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS393937 announce?

AS393937 announces 256 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Puerto Rico.

Who operates AS393937?

AS393937 is operated by Medical Card System, Inc.. The organization is based in Puerto Rico. You can view all IP ranges and related ASNs on the organization page.

What country is AS393937 registered in?

AS393937 is registered in Puerto Rico. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-24 13:10:31 UTC
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