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Autonomous System

AS400866

Harmony Networks, Inc.

Announced IPs
6,912
CIDR prefixes
22
ASN
AS400866

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 →

⚠ 1 MOAS prefix — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS400866 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)
79.61.166.0/24 AS3269, AS400866 2026-11-13 15:24:10

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
2.59.148.0/23 512
0.0%
Harmony Networks, Inc. DE — —
82.152.4.0/23 512
0.0%
Harmony Networks, Inc. GB — —
216.225.160.0/23 512
0.0%
Harmony Networks, Inc. US — —
216.225.164.0/23 512
0.0%
Harmony Networks, Inc. US — —
216.225.168.0/23 512
0.0%
Harmony Networks, Inc. US — —
23.251.53.0/24 256
0.0%
Harmony Networks, Inc. US — —
23.251.54.0/24 256
0.0%
Harmony Networks, Inc. US — —
45.87.100.0/24 256
0.0%
Harmony Networks, Inc. US — —
82.153.153.0/24 256
0.0%
Harmony Networks, Inc. GB — —
82.153.156.0/24 256
0.0%
Harmony Networks, Inc. GB — —
82.153.200.0/24 256
0.0%
Harmony Networks, Inc. GB — —
107.172.149.0/24 256
100.0%
Harmony Networks, Inc. US — —
141.11.29.0/24 256
0.0%
Harmony Networks, Inc. FR — —
147.79.23.0/24 256
0.0%
Harmony Networks, Inc. US — —
194.79.15.0/24 256
0.0%
Harmony Networks, Inc. BG — —
198.44.161.0/24 256
0.0%
Harmony Networks, Inc. US — —
198.44.162.0/24 256
0.0%
Harmony Networks, Inc. US — —
213.210.63.0/24 256
7.4%
Harmony Networks, Inc. GB — —
213.218.211.0/24 256
98.4%
Harmony Networks, Inc. GB — —
216.225.160.0/24 256
0.0%
Harmony Networks, Inc. HK — —
216.225.161.0/24 256
0.0%
Harmony Networks, Inc. SG — —
216.225.163.0/24 256
0.0%
Harmony Networks, Inc. US — —
216.225.164.0/24 256
0.0%
Harmony Networks, Inc. KR Seoul Seoul
216.225.165.0/24 256
0.0%
Harmony Networks, Inc. US California Los Angeles
216.225.167.0/24 256
0.0%
Harmony Networks, Inc. US — —
216.225.171.0/24 256
0.0%
Harmony Networks, Inc. US — —

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS400866 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
216.225.171.0/24 370,687 2026-11-13 15:24:15
216.225.167.0/24 370,247 2026-11-13 15:24:45
23.251.54.0/24 28,659 2026-11-13 15:22:11
23.251.53.0/24 25,551 2026-11-13 15:22:11
216.225.165.0/24 24,997 2026-11-13 15:23:55
198.44.161.0/24 24,687 2026-11-13 15:23:55
216.225.169.0/24 24,506 2026-11-13 15:23:55
198.44.162.0/24 24,410 2026-11-13 15:23:55
2.59.148.0/23 15,538 2026-11-13 15:22:03
216.225.160.0/24 14,595 2026-11-13 15:24:06
216.225.164.0/24 13,918 2026-11-13 15:24:06
216.225.161.0/24 13,769 2026-11-13 15:24:06
45.87.100.0/24 13,242 2026-11-13 15:22:04
82.152.4.0/24 13,057 2026-11-13 15:22:04
82.153.200.0/24 12,901 2026-11-13 15:22:04
82.152.5.0/24 12,830 2026-11-13 15:22:04
82.153.156.0/24 12,810 2026-11-13 15:22:04
147.79.23.0/24 12,763 2026-11-13 15:22:53
82.153.153.0/24 12,751 2026-11-13 15:22:04
107.172.149.0/24 12,608 2026-11-13 15:22:53
141.11.29.0/24 12,317 2026-11-13 15:22:53
213.210.63.0/24 11,744 2026-11-13 15:22:53
194.79.15.0/24 11,644 2026-11-13 15:22:53
213.218.211.0/24 11,613 2026-11-13 15:22:53
216.225.163.0/24 11,321 2026-11-13 15:22:53
216.225.168.0/24 9,973 2026-11-13 15:24:06
79.61.166.0/24 4,525 2026-11-13 00:34:38
23.95.177.0/24 4,134 2026-07-28 03:06:38
104.168.31.0/24 3,989 2026-07-28 03:03:18
198.46.247.0/24 3,854 2026-07-28 03:05:18
213.218.233.0/24 2,218 2026-07-31 08:35:06
185.148.69.0/24 2,065 2026-11-13 02:59:53
191.101.252.0/24 2,046 2026-11-13 02:59:53
181.215.112.0/24 2,044 2026-11-13 02:59:53
81.31.235.0/24 552 2026-11-10 06:41:41
216.225.170.0/24 58 2026-05-21 02:30:31

Frequently Asked Questions

What is AS400866?

AS400866 is an Autonomous System Number assigned to Harmony Networks, Inc.. 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 AS400866 announce?

AS400866 announces 6.9K IPv4 addresses distributed across 22 routed CIDR prefixes. The network is registered in United States.

Who operates AS400866?

AS400866 is operated by Harmony Networks, Inc.. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS400866 registered in?

AS400866 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: 2026-11-13 15:24:05 UTC
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