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Autonomous System

AS21645

American Dental Association

Announced IPs
256
CIDR prefixes
1
ASN
AS21645

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
64.145.66.0/24 256
0.0%
American Dental Association US Illinois Chicago

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS21645 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
64.145.66.0/24 12,034 2026-08-01 23:32:57

Frequently Asked Questions

What is AS21645?

AS21645 is an Autonomous System Number assigned to American Dental Association. 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 AS21645 announce?

AS21645 announces 256 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in United States.

Who operates AS21645?

AS21645 is operated by American Dental Association. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS21645 registered in?

AS21645 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: 2026-08-01 23:40:30 UTC
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