Autonomous System

AS17621

China Unicom Shanghai network

China Unicom Shanghai network China 🌐 chinaunicom.cn

Announced IPs

887,296

CIDR prefixes

309

ASN

AS17621

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.

58/100

Caution

How this score is built

Baseline (neutral) 65
Multiple-origin (MOAS) routing anomaly −12
Isp allocation +5
Trust score 58 / 100

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

⚠ 100+ MOAS prefixes — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS17621 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.

Prefix	Origin ASNs	Last detected (UTC)
103.61.189.0/24	AS4811, AS17621	2026-07-19 07:07:51
103.200.232.0/24	AS17621, AS131314	2026-07-19 07:07:51
182.175.243.0/24	AS4811, AS17621	2026-07-19 07:07:51
202.136.208.0/22	AS4812, AS17621	2026-07-19 07:07:51
103.202.136.0/22	AS4811, AS17621	2026-07-19 07:07:51
120.133.238.0/24	AS4811, AS17621	2026-07-19 07:07:51
120.92.236.0/23	AS4811, AS17621	2026-07-19 07:07:51
203.76.208.0/22	AS4811, AS17621	2026-07-19 07:07:51
120.92.152.0/21	AS4811, AS17621	2026-07-19 07:07:51
103.202.104.0/22	AS4811, AS17621	2026-07-19 07:07:51
202.89.96.0/24	AS4812, AS17621	2026-07-19 07:07:51
106.75.240.0/20	AS4811, AS17621	2026-07-19 07:07:51
103.36.168.0/24	AS4811, AS17621	2026-07-19 07:07:51
120.92.228.0/23	AS4811, AS17621	2026-07-19 07:07:51
120.136.185.0/24	AS4812, AS17621	2026-07-19 07:07:51

Showing the 15 most recently detected of 100+ MOAS prefixes. Many multi-origin prefixes on large networks are benign (anycast); see all MOAS anomalies.

Network profile

Source: PeeringDB →

Geographic scope Not Disclosed

Traffic ratio Not Disclosed

Peering policy Open

Website ↗

Web3 footprint

AS17621 hosts 1 observed decentralized-network node across 1 network. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.

IPFS IPFS 1

AS17621 — global IP footprint

Cities where AS17621 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

View on 3D globe →

Top CIDR ranges

CIDR	IPs	PTR Density	Organization	Country	State	City
139.226.0.0/16	65.5K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
27.115.0.0/17	32.8K	0.4%	China Unicom Shanghai network	CN	Shanghai	Shanghai
58.246.0.0/17	32.8K	0.5%	China Unicom Shanghai network	CN	Shanghai	Shanghai
58.247.0.0/17	32.8K	0.3%	China Unicom Shanghai network	CN	Shanghai	Shanghai
139.227.0.0/17	32.8K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
140.206.0.0/17	32.8K	0.2%	China Unicom Shanghai network	CN	Shanghai	Shanghai
27.115.0.0/18	16.4K	0.0%	—	CN	Shanghai	Shanghai
58.247.0.0/18	16.4K	0.0%	—	CN	Shanghai	Shanghai
58.247.128.0/18	16.4K	0.4%	China Unicom Shanghai network	CN	Shanghai	Shanghai
112.64.128.0/18	16.4K	0.6%	China Unicom Shanghai network	CN	Shanghai	Shanghai
112.65.0.0/18	16.4K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
112.65.128.0/18	16.4K	0.8%	China Unicom Shanghai network	CN	—	—
120.92.128.0/18	16.4K	0.1%	China Unicom Shanghai network	CN	Shanghai	Shanghai
139.227.128.0/18	16.4K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
220.248.64.0/18	16.4K	0.8%	China Unicom Shanghai network	CN	Shanghai	Shanghai
223.166.0.0/18	16.4K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
223.167.0.0/18	16.4K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
27.115.96.0/19	8.2K	0.0%	—	CN	Shanghai	Shanghai
58.246.128.0/19	8.2K	1.3%	China Unicom Shanghai network	CN	Shanghai	Shanghai
58.246.224.0/19	8.2K	0.3%	China Unicom Shanghai network	CN	Shanghai	Shanghai
58.247.64.0/19	8.2K	0.0%	—	CN	Shanghai	Shanghai
106.75.224.0/19	8.2K	27.0%	China Unicom Shanghai network	CN	—	—
110.43.128.0/19	8.2K	0.0%	China Unicom Shanghai network	CN	—	—
112.64.0.0/19	8.2K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
112.64.160.0/19	8.2K	0.0%	—	CN	Shanghai	Shanghai
112.65.32.0/19	8.2K	0.0%	—	CN	Shanghai	Shanghai
112.65.128.0/19	8.2K	0.0%	—	CN	—	—
113.31.96.0/19	8.2K	23.4%	China Unicom Shanghai network	CN	—	—
113.31.160.0/19	8.2K	7.3%	China Unicom Shanghai network	CN	Shanghai	Shanghai
139.227.192.0/19	8.2K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
140.206.128.0/19	8.2K	0.1%	China Unicom Shanghai network	CN	Shanghai	Shanghai
210.22.64.0/19	8.2K	2.6%	China Unicom Shanghai network	CN	—	—
210.22.128.0/19	8.2K	1.3%	China Unicom Shanghai network	CN	Shanghai	Shanghai
211.95.96.0/19	8.2K	0.5%	China Unicom Shanghai network	CN	—	—
220.203.224.0/19	8.2K	0.0%	China Unicom Shanghai network	CN	—	—
220.248.0.0/19	8.2K	1.2%	China Unicom Shanghai network	CN	—	—
223.166.96.0/19	8.2K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
223.167.160.0/19	8.2K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
27.115.64.0/20	4.1K	0.0%	—	CN	Shanghai	Shanghai
58.246.176.0/20	4.1K	0.4%	China Unicom Shanghai network	CN	—	—
58.247.96.0/20	4.1K	0.0%	—	CN	—	—
58.247.224.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
103.202.96.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	—	—
103.202.128.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	—	—
106.75.208.0/20	4.1K	24.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
112.64.48.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
112.64.80.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
112.64.96.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
112.64.144.0/20	4.1K	0.0%	—	CN	—	—
112.64.192.0/20	4.1K	0.2%	China Unicom Shanghai network	CN	Shanghai	Shanghai
112.64.240.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	—	—
112.65.0.0/20	4.1K	0.0%	—	CN	Shanghai	Shanghai
112.65.96.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	—	—
112.65.160.0/20	4.1K	0.0%	—	CN	—	—
113.31.144.0/20	4.1K	9.9%	China Unicom Shanghai network	CN	—	—
116.128.208.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	—	—
120.92.224.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	—	—
139.227.240.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
140.206.176.0/20	4.1K	0.1%	China Unicom Shanghai network	CN	—	—
140.207.0.0/20	4.1K	0.5%	China Unicom Shanghai network	CN	—	—
140.207.32.0/20	4.1K	0.2%	China Unicom Shanghai network	CN	—	—
140.207.80.0/20	4.1K	0.4%	China Unicom Shanghai network	CN	—	—
140.207.96.0/20	4.1K	4.1%	China Unicom Shanghai network	CN	—	—
140.207.144.0/20	4.1K	0.6%	China Unicom Shanghai network	CN	Shanghai	Shanghai
140.207.160.0/20	4.1K	0.8%	China Unicom Shanghai network	CN	—	—
140.207.192.0/20	4.1K	0.1%	China Unicom Shanghai network	CN	—	—
202.90.96.0/20	4.1K	0.8%	China Unicom Shanghai network	CN	—	—
210.22.96.0/20	4.1K	1.0%	China Unicom Shanghai network	CN	—	—
210.22.176.0/20	4.1K	1.4%	China Unicom Shanghai network	CN	—	—
211.95.0.0/20	4.1K	0.8%	China Unicom Shanghai network	CN	—	—
211.95.80.0/20	4.1K	0.3%	China Unicom Shanghai network	CN	—	—
211.144.192.0/20	4.1K	86.8%	China Unicom Shanghai network	CN	—	—
220.196.16.0/20	4.1K	0.1%	China Unicom Shanghai network	CN	—	—
220.196.64.0/20	4.1K	0.1%	China Unicom Shanghai network	CN	—	—
220.196.112.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	—	—
220.196.208.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	—	—
220.196.224.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
223.166.80.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
223.166.128.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
223.166.176.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
223.166.192.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
223.166.224.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
223.167.64.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
223.167.112.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
223.167.128.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
223.167.192.0/20	4.1K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
27.115.88.0/21	2.0K	0.0%	—	CN	—	—
58.246.168.0/21	2.0K	0.3%	China Unicom Shanghai network	CN	—	—
58.246.192.0/21	2.0K	0.6%	China Unicom Shanghai network	CN	Shanghai	Shanghai
58.246.208.0/21	2.0K	0.4%	China Unicom Shanghai network	CN	Shanghai	Shanghai
58.247.120.0/21	2.0K	0.0%	—	CN	—	—
58.247.192.0/21	2.0K	0.0%	China Unicom Shanghai network	CN	—	—
58.247.216.0/21	2.0K	0.0%	China Unicom Shanghai network	CN	—	—
58.247.240.0/21	2.0K	0.0%	China Unicom Shanghai network	CN	—	—
103.202.120.0/21	2.0K	0.0%	China Unicom Shanghai network	CN	—	—
112.64.72.0/21	2.0K	0.0%	China Unicom Shanghai network	CN	Shanghai	Shanghai
112.64.120.0/21	2.0K	2.5%	China Unicom Shanghai network	CN	—	—
112.64.128.0/21	2.0K	0.0%	—	CN	—	—
112.64.216.0/21	2.0K	0.0%	China Unicom Shanghai network	CN	—	—
112.64.224.0/21	2.0K	0.3%	China Unicom Shanghai network	CN	—	—

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS17621 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

Prefix	Announcement samples	Last seen
120.92.224.0/20	25,388	2026-07-19 07:10:55
27.115.124.0/23	16,558	2026-07-19 07:14:41
140.207.205.0/24	14,738	2026-07-19 07:14:41
58.246.95.0/24	14,721	2026-07-19 07:14:41
58.247.108.0/24	14,716	2026-07-19 07:14:41
140.207.250.0/24	14,683	2026-07-19 07:14:41
140.207.243.0/24	14,683	2026-07-19 07:14:41
140.207.199.0/24	14,617	2026-07-19 07:14:41
140.207.195.0/24	14,579	2026-07-19 07:14:41
140.207.198.0/24	14,570	2026-07-19 07:14:41
140.207.192.0/24	14,570	2026-07-19 07:14:41
140.207.197.0/24	14,564	2026-07-19 07:14:41
140.207.200.0/24	14,548	2026-07-19 07:14:41
140.207.193.0/24	14,547	2026-07-19 07:14:41
140.207.206.0/24	14,542	2026-07-19 07:14:41
140.207.203.0/24	14,518	2026-07-19 07:14:41
140.207.98.0/24	14,513	2026-07-19 07:14:41
140.207.136.0/23	14,511	2026-07-19 07:14:41
140.207.207.0/24	14,505	2026-07-19 07:14:41
27.115.124.0/24	14,488	2026-07-19 07:14:41
140.207.202.0/24	14,487	2026-07-19 07:14:41
140.207.194.0/24	14,458	2026-07-19 07:14:41
140.207.201.0/24	14,424	2026-07-19 07:14:41
220.248.117.0/24	14,413	2026-07-19 07:14:41
27.115.126.0/23	14,370	2026-07-19 07:14:41
140.207.204.0/24	14,357	2026-07-19 07:14:41
27.115.120.0/22	14,356	2026-07-19 07:14:41
140.207.236.0/24	14,351	2026-07-19 07:14:41
140.207.242.0/24	14,342	2026-07-19 07:14:41
140.207.247.0/24	14,340	2026-07-19 07:14:41
140.207.232.0/24	14,308	2026-07-19 07:14:41
140.207.234.0/24	14,308	2026-07-19 07:14:41
223.167.32.0/19	14,307	2026-07-19 07:14:41
223.167.96.0/19	14,296	2026-07-19 07:14:41
139.227.224.0/19	14,274	2026-07-19 07:14:41
194.138.203.0/24	13,598	2026-07-19 07:14:41
112.64.238.0/24	13,165	2026-07-19 07:14:41
112.65.54.0/24	13,129	2026-07-19 07:14:41
112.64.199.0/24	13,112	2026-07-19 07:14:41
112.64.200.0/24	13,088	2026-07-19 07:14:41
43.250.144.0/22	13,084	2026-07-19 07:14:41
112.65.96.0/24	12,936	2026-07-19 07:14:41
58.247.247.0/24	12,890	2026-07-19 07:14:41
211.95.72.0/24	12,887	2026-07-19 07:14:41
58.247.22.0/24	12,818	2026-07-19 07:14:41
112.65.55.0/24	12,816	2026-07-19 07:14:41
223.167.16.0/24	12,800	2026-07-19 07:14:41
112.64.0.0/16	12,749	2026-07-19 07:14:41
223.167.149.0/24	12,718	2026-07-19 07:14:41
112.65.54.0/23	12,687	2026-07-19 07:14:41

Showing top 50 of 390 announced prefixes by sample volume.

Frequently Asked Questions

What is AS17621?

AS17621 is an Autonomous System Number assigned to China Unicom Shanghai network. 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 AS17621 announce?

AS17621 announces 887.3K IPv4 addresses distributed across 309 routed CIDR prefixes. The network is registered in China.

Who operates AS17621?

AS17621 is operated by China Unicom Shanghai network. The organization is based in China. You can view all IP ranges and related ASNs on the organization page.

What country is AS17621 registered in?

AS17621 is registered in China. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-19 07:10:32 UTC