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Autonomous System

AS19903

Reach Broadband LLC

Announced IPs
2,816
CIDR prefixes
15
ASN
AS19903

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.

70/100
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

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS19903 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
107.178.18.0/24 5,022 2026-07-24 14:00:12
107.178.24.0/24 5,022 2026-07-24 14:00:12
107.178.22.0/24 5,020 2026-07-24 14:00:12
107.178.17.0/24 5,018 2026-07-24 14:00:12
107.178.23.0/24 5,017 2026-07-24 14:00:12
107.178.19.0/24 5,017 2026-07-24 14:00:12
107.178.27.0/24 5,015 2026-07-24 14:00:12
107.178.16.0/24 5,014 2026-07-24 14:00:12
107.178.21.0/24 5,014 2026-07-24 14:00:12
107.178.25.0/24 5,013 2026-07-24 14:00:12
107.178.29.0/24 5,007 2026-07-24 14:00:12

Frequently Asked Questions

What is AS19903?

AS19903 is an Autonomous System Number assigned to Reach Broadband 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 AS19903 announce?

AS19903 announces 2.8K IPv4 addresses distributed across 15 routed CIDR prefixes. The network is registered in United States.

Who operates AS19903?

AS19903 is operated by Reach Broadband LLC. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS19903 registered in?

AS19903 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: 2026-07-24 14:55:31 UTC
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