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Autonomous System

AS2721

CULR, LLC

Announced IPs
8,960
CIDR prefixes
4
ASN
AS2721

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.

53/100
Caution
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

⚠ 1 MOAS prefix — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS2721 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

PrefixOrigin ASNsLast detected (UTC)
192.188.108.0/24 AS2721, AS2722 2026-07-23 19:08:41

Network profile

Source: PeeringDB →
Network type Educational/Research
Geographic scope Regional
Traffic ratio Balanced
Peering policy Open

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
205.186.224.0/19 8.2K
91.8%
CULR, LLC US
205.186.46.0/23 512
94.3%
CULR, LLC US South Carolina Columbia
192.188.108.0/24 256
0.0%
CULR, LLC US South Carolina Clinton
205.186.46.0/24 256
94.5%
CULR, LLC US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS2721 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
192.188.108.0/24 8,658 2026-07-23 18:55:28
205.186.226.0/24 7,924 2026-07-23 18:55:28
205.186.224.0/19 6,724 2026-07-23 18:55:32
205.186.46.0/24 2,757 2026-07-23 18:56:15
205.186.47.0/24 2,463 2026-07-23 18:55:18

Frequently Asked Questions

What is AS2721?

AS2721 is an Autonomous System Number assigned to CULR, LLC. 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 AS2721 announce?

AS2721 announces 9.0K IPv4 addresses distributed across 4 routed CIDR prefixes. The network is registered in United States.

Who operates AS2721?

AS2721 is operated by CULR, LLC. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS2721 registered in?

AS2721 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-23 18:55:31 UTC
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