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Autonomous System

AS21973

Xponet

Announced IPs
5,376
CIDR prefixes
13
ASN
AS21973

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
199.222.104.0/21 2.0K
0.0%
Xponet US
63.85.4.0/22 1.0K
0.0%
Xponet US
199.222.104.0/23 512
0.0%
Xponet US
63.85.164.0/24 256
0.0%
Xponet US
63.85.166.0/24 256
0.0%
Xponet US
63.85.168.0/24 256
0.0%
Xponet US
63.86.203.0/24 256
0.0%
Xponet US
63.97.222.0/24 256
0.0%
Xponet US
63.102.107.0/24 256
0.0%
Xponet US
63.106.29.0/24 256
0.0%
Xponet US
199.222.104.0/24 256
0.0%
Xponet US
199.222.125.0/24 256
0.0%
Xponet US
199.222.126.0/24 256
0.0%
Xponet US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS21973 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
63.85.4.0/24 24,862 2026-07-23 14:37:13
63.85.5.0/24 24,812 2026-07-23 14:37:13
63.85.168.0/24 14,460 2026-07-23 14:37:13
63.106.29.0/24 13,663 2026-07-23 15:51:46
199.222.107.0/24 13,403 2026-06-05 18:44:19
199.222.125.0/24 7,159 2026-07-23 15:48:32
63.86.203.0/24 5,768 2026-07-23 15:51:45
63.85.7.0/24 5,738 2026-07-23 15:51:45
63.85.6.0/24 5,736 2026-07-23 15:51:45
63.85.166.0/24 5,717 2026-07-23 15:48:32
63.102.107.0/24 5,149 2026-07-23 15:48:03
63.97.222.0/24 5,099 2026-07-23 15:48:06
199.222.104.0/21 4,392 2026-06-05 02:30:20
199.222.126.0/24 4,216 2026-07-23 15:08:46
199.222.104.0/24 4,159 2026-07-23 15:51:51
63.85.164.0/24 4,157 2026-07-23 15:09:06
199.222.105.0/24 2,604 2026-07-23 15:51:51

Frequently Asked Questions

What is AS21973?

AS21973 is an Autonomous System Number assigned to Xponet. 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 AS21973 announce?

AS21973 announces 5.4K IPv4 addresses distributed across 13 routed CIDR prefixes. The network is registered in United States.

Who operates AS21973?

AS21973 is operated by Xponet. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS21973 registered in?

AS21973 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 16:25:31 UTC
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