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Autonomous System

AS20172

VeriSign Global Registry Services

Announced IPs
3,072
CIDR prefixes
12
ASN
AS20172

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 v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

⚠ 14 MOAS prefixes — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS20172 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)
192.41.162.0/24 AS20172, AS396566 2026-11-07 09:23:14
192.42.175.0/24 AS19836, AS20172 2026-11-07 09:23:14
192.55.83.0/24 AS20172, AS396566 2026-11-07 09:23:14
216.168.228.0/24 AS19836, AS20172 2026-11-07 09:23:14
192.52.178.0/24 AS20172, AS396566 2026-11-07 09:23:14
192.82.133.0/24 AS19836, AS20172 2026-11-07 09:23:14
192.81.185.0/24 AS20172, AS36625 2026-11-07 09:23:14
192.68.126.0/24 AS19836, AS20172 2026-11-07 09:23:14
192.48.79.0/24 AS20172, AS396566 2026-11-07 09:23:14
198.17.208.0/24 AS20172, AS36625 2026-11-07 09:23:14
192.82.134.0/24 AS20172, AS396549 2026-11-06 13:38:06
192.42.176.0/24 AS20172, AS396549 2026-11-06 13:38:06
192.30.45.0/24 AS20172, AS396549 2026-11-06 07:38:04
199.7.71.0/24 AS20172, AS396549 2026-11-05 19:22:59

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS20172 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
81.19.194.0/24 3,727 2026-11-03 21:26:22
199.7.76.0/24 3,726 2026-11-03 21:26:22
192.68.126.0/24 849 2026-11-07 09:10:11
192.82.133.0/24 411 2026-11-07 09:10:11
192.42.175.0/24 407 2026-11-07 09:10:11
216.168.228.0/24 407 2026-11-07 09:10:11
192.41.162.0/24 390 2026-11-07 09:10:11
192.48.79.0/24 387 2026-11-07 09:10:11
192.52.178.0/24 386 2026-11-07 09:10:11
192.55.83.0/24 385 2026-11-07 09:10:11
185.100.0.0/24 202 2026-09-29 07:57:17
192.42.174.0/24 188 2026-09-29 09:43:52
192.81.185.0/24 187 2026-11-06 19:49:47
192.42.178.0/24 187 2026-09-29 09:43:52
198.17.208.0/24 186 2026-11-06 19:49:47
192.43.172.0/24 137 2026-09-29 09:43:52
192.42.93.0/24 137 2026-09-29 09:43:52
192.54.112.0/24 135 2026-09-29 09:43:53
192.35.51.0/24 134 2026-09-29 09:43:52
192.30.45.0/24 100 2026-11-05 07:43:28
81.19.195.0/24 64 2026-09-28 10:41:24
198.41.0.0/24 55 2026-11-04 07:58:04
192.153.247.0/24 47 2026-09-29 03:25:23
192.68.130.0/24 47 2026-09-29 03:25:23
192.42.176.0/24 45 2026-11-05 13:52:32
192.82.134.0/24 45 2026-11-05 13:52:32
199.7.71.0/24 33 2026-11-04 19:23:10

Frequently Asked Questions

What is AS20172?

AS20172 is an Autonomous System Number assigned to VeriSign Global Registry Services. 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 AS20172 announce?

AS20172 announces 3.1K IPv4 addresses distributed across 12 routed CIDR prefixes. The network is registered in United States.

Who operates AS20172?

AS20172 is operated by VeriSign Global Registry Services. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS20172 registered in?

AS20172 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: 2026-11-07 09:24:07 UTC
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