AS17621
China Unicom Shanghai network
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.
- Baseline (neutral) 65
- Active-threat / abuse risk −12
- Isp allocation +5
- Trust score 58 / 100
Experimental · trust-vectors model v1.3.0 — 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) |
|---|---|---|
| 113.21.237.0/24 | AS4812, AS17621 | 2026-11-13 08:39:07 |
| 101.52.216.0/22 | AS4811, AS17621 | 2026-11-13 08:39:07 |
| 120.92.136.0/21 | AS4811, AS17621 | 2026-11-13 08:39:07 |
| 175.102.132.0/24 | AS4811, AS17621 | 2026-11-13 08:39:07 |
| 103.5.194.0/24 | AS4812, AS17621 | 2026-11-13 08:39:07 |
| 120.92.128.0/21 | AS4811, AS17621 | 2026-11-13 08:39:07 |
| 120.136.187.0/24 | AS4812, AS17621 | 2026-11-13 08:39:07 |
| 106.75.224.0/20 | AS4811, AS17621 | 2026-11-13 08:39:07 |
| 103.108.244.0/24 | AS4812, AS17621 | 2026-11-13 08:39:07 |
| 120.133.236.0/24 | AS4811, AS17621 | 2026-11-13 08:39:07 |
| 120.92.176.0/21 | AS4811, AS17621 | 2026-11-13 08:39:07 |
| 122.144.240.0/24 | AS4812, AS17621 | 2026-11-13 08:39:07 |
| 120.92.224.0/23 | AS4811, AS17621 | 2026-11-13 08:39:07 |
| 103.5.192.0/23 | AS4812, AS17621 | 2026-11-13 08:39:07 |
| 103.202.124.0/22 | AS4811, AS17621 | 2026-11-13 08:39:07 |
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 →Web3 footprint
AS17621 hosts 4 observed decentralized-network nodes across 2 networks. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.
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.
Top CIDR ranges
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 |
|---|---|---|
| 194.138.203.0/24 | 61,235 | 2026-11-13 08:22:23 |
| 120.92.224.0/20 | 45,861 | 2026-11-13 08:34:45 |
| 220.196.0.0/17 | 43,077 | 2026-11-13 08:23:37 |
| 220.196.58.0/23 | 42,224 | 2026-11-13 08:35:13 |
| 220.196.48.0/24 | 41,797 | 2026-11-13 08:23:37 |
| 114.28.248.0/24 | 41,562 | 2026-11-13 08:21:10 |
| 220.196.51.0/24 | 41,476 | 2026-11-13 08:23:37 |
| 220.196.2.0/23 | 41,392 | 2026-11-13 08:23:37 |
| 220.196.22.0/24 | 41,384 | 2026-11-13 08:23:37 |
| 210.22.64.0/20 | 39,826 | 2026-11-13 08:23:23 |
| 112.64.238.0/24 | 39,260 | 2026-11-13 08:28:39 |
| 112.64.200.0/24 | 39,225 | 2026-11-13 08:28:39 |
| 112.64.199.0/24 | 39,215 | 2026-11-13 08:28:39 |
| 58.247.247.0/24 | 39,198 | 2026-11-13 08:28:39 |
| 112.65.96.0/24 | 39,110 | 2026-11-13 08:28:39 |
| 112.65.54.0/24 | 38,892 | 2026-11-13 08:28:39 |
| 27.115.124.0/23 | 38,839 | 2026-11-13 08:21:08 |
| 116.128.200.0/21 | 38,789 | 2026-11-13 08:20:08 |
| 58.247.22.0/24 | 38,699 | 2026-11-13 08:28:39 |
| 223.167.16.0/24 | 38,679 | 2026-11-13 08:35:13 |
| 112.65.55.0/24 | 38,592 | 2026-11-13 08:28:39 |
| 116.128.128.0/18 | 38,513 | 2026-11-13 08:20:08 |
| 116.128.208.0/20 | 38,491 | 2026-11-13 08:20:08 |
| 112.65.54.0/23 | 38,355 | 2026-11-13 08:28:39 |
| 223.167.149.0/24 | 38,288 | 2026-11-13 08:35:13 |
| 223.167.148.0/23 | 38,237 | 2026-11-13 08:35:13 |
| 223.167.148.0/24 | 38,186 | 2026-11-13 08:35:13 |
| 220.248.117.0/24 | 38,162 | 2026-11-13 08:35:13 |
| 140.206.54.0/24 | 38,086 | 2026-11-13 08:34:45 |
| 220.196.224.0/21 | 37,924 | 2026-11-13 08:22:35 |
| 140.206.32.0/19 | 37,868 | 2026-11-13 08:34:45 |
| 220.196.232.0/22 | 37,854 | 2026-11-13 08:22:35 |
| 140.206.128.0/19 | 37,852 | 2026-11-13 08:34:45 |
| 140.206.96.0/19 | 37,847 | 2026-11-13 08:34:45 |
| 220.196.128.0/17 | 37,831 | 2026-11-13 08:22:35 |
| 139.226.96.0/19 | 37,815 | 2026-11-13 08:34:45 |
| 139.226.32.0/19 | 37,700 | 2026-11-13 08:34:45 |
| 58.246.95.0/24 | 37,678 | 2026-11-13 08:28:39 |
| 220.203.224.0/19 | 37,675 | 2026-11-13 08:22:35 |
| 58.247.108.0/24 | 37,345 | 2026-11-13 08:28:39 |
| 220.196.239.0/24 | 37,319 | 2026-11-13 08:22:35 |
| 220.196.236.0/24 | 37,286 | 2026-11-13 08:22:35 |
| 220.196.237.0/24 | 37,251 | 2026-11-13 08:22:35 |
| 220.196.238.0/24 | 37,245 | 2026-11-13 08:22:35 |
| 140.207.200.0/24 | 37,144 | 2026-11-13 08:21:10 |
| 27.115.124.0/24 | 36,963 | 2026-11-13 08:28:39 |
| 223.167.96.0/19 | 36,937 | 2026-11-13 08:35:13 |
| 223.167.32.0/19 | 36,912 | 2026-11-13 08:35:13 |
| 140.207.205.0/24 | 36,886 | 2026-11-13 08:21:10 |
| 140.207.202.0/24 | 36,881 | 2026-11-13 08:21:10 |
Showing top 50 of 409 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 884.0K IPv4 addresses distributed across 339 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.
