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Autonomous System

AS33553

SOUND TRANSIT

Announced IPs
256
CIDR prefixes
1
ASN
AS33553

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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
199.191.49.0/24 256
0.0%
SOUND TRANSIT US Washington Seattle

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS33553 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
199.191.49.0/24 5,631 2026-07-22 10:35:17

Frequently Asked Questions

What is AS33553?

AS33553 is an Autonomous System Number assigned to SOUND TRANSIT. 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 AS33553 announce?

AS33553 announces 256 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in United States.

Who operates AS33553?

AS33553 is operated by SOUND TRANSIT. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS33553 registered in?

AS33553 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: 2026-07-22 11:10:34 UTC
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