AS17621 China Unicom Shanghai network 🇨🇳 CN

China Unicom. Announcing 816 prefixes, seen at the RIS collectors.

IPv4 prefixes
390
1,293,312 (5,052 × /24)
IPv6 prefixes
426
25 × /32
Upstreams
2
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
45
transit customers observed
Customer cone
46
ASes reachable through it

Registry and operator data

AS number
AS17621
Name
China Unicom Shanghai network
Organisation
China Unicom Shanghai Network
Country
🇨🇳 CN
RIR
APNIC
Allocated
2001-01-18
Scope
Not Disclosed
Peering policy
Open
PeeringDB
net/32733

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

796 valid (97.5%) 8 invalid (1.0%) 12 no ROA (1.5%)

Announcement history

One point per day, recorded at each table import

010721332042609-1809-2710-0610-1510-2411-0211-11
IPv4 IPv6

Recorded changes

New prefixes and origin changes seen on the live stream

WhenChangePrefixOriginPath
2026-11-11 01:23:29Z origin change 2403:a100::/48 AS4811 → AS17621 580576939483717621
2026-11-11 00:56:32Z origin change 182.175.243.0/24 AS4811 → AS17621 176395511483717621
2026-11-11 00:56:32Z origin change 182.175.242.0/24 AS4811 → AS17621 176395511483717621
2026-11-11 00:15:49Z origin change 218.96.128.0/24 AS17621 → AS10212 4504966965845398082440010212102121021210212
2026-11-11 00:13:19Z origin change 218.96.128.0/24 AS10212 → AS17621 4504966965511483717621
2026-11-10 22:49:26Z origin change 182.175.243.0/24 AS17621 → AS4811 17639349141344811
2026-11-10 22:49:26Z origin change 182.175.242.0/24 AS17621 → AS4811 17639349141344811
2026-11-10 22:42:49Z origin change 218.96.128.0/24 AS17621 → AS10212 4504966965845398082440010212102121021210212
2026-11-10 22:41:19Z origin change 218.96.128.0/24 AS4812 → AS17621 4504966965511483717621
2026-11-10 22:34:43Z origin change 182.175.243.0/24 AS4811 → AS17621 176395511483717621
2026-11-10 22:34:43Z origin change 182.175.242.0/24 AS4811 → AS17621 176395511483717621
2026-11-10 17:16:24Z origin change 2405:1480:1000::/48 AS17621 → AS4811 4943248362176441344811
2026-11-10 17:16:24Z origin change 2403:a200:a1ff::/48 AS17621 → AS4811 4943248362176441344811
2026-11-10 17:15:45Z origin change 2403:a200:a1ff::/48 AS4811 → AS17621 49432215510315436939483717621
2026-11-10 17:15:45Z origin change 2405:1480:1000::/48 AS4811 → AS17621 49432215510315436939483717621
2026-11-10 14:54:26Z origin change 103.202.140.0/22 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 103.202.124.0/22 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 103.202.108.0/22 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 103.202.92.0/22 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 103.202.144.0/22 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 103.202.128.0/22 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 103.202.112.0/22 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 103.202.96.0/22 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 103.202.132.0/22 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 103.202.100.0/22 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 103.202.136.0/22 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 103.202.120.0/22 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 103.202.104.0/22 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 103.36.172.0/24 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 103.36.168.0/24 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 103.36.173.0/24 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:26Z origin change 106.75.208.0/20 AS17621 → AS4811 20514129941344811
2026-11-10 14:54:06Z origin change 103.202.92.0/22 AS4811 → AS17621 7018483717621
2026-11-10 14:54:06Z origin change 103.202.132.0/22 AS4811 → AS17621 7018483717621
2026-11-10 14:54:06Z origin change 103.202.100.0/22 AS4811 → AS17621 7018483717621
2026-11-10 14:54:06Z origin change 103.202.104.0/22 AS4811 → AS17621 7018483717621
2026-11-10 14:54:06Z origin change 103.202.124.0/22 AS4811 → AS17621 7018483717621
2026-11-10 14:54:06Z origin change 103.202.96.0/22 AS4811 → AS17621 7018483717621
2026-11-10 14:54:06Z origin change 103.202.108.0/22 AS4811 → AS17621 7018483717621
2026-11-10 14:54:06Z origin change 103.202.112.0/22 AS4811 → AS17621 7018483717621
2026-11-10 14:54:06Z origin change 103.202.128.0/22 AS4811 → AS17621 7018483717621
2026-11-10 14:54:06Z origin change 103.202.120.0/22 AS4811 → AS17621 7018483717621
2026-11-10 14:54:06Z origin change 106.75.208.0/20 AS4811 → AS17621 7018483717621
2026-11-10 14:54:06Z origin change 103.202.144.0/22 AS4811 → AS17621 7018483717621
2026-11-10 14:54:06Z origin change 103.202.140.0/22 AS4811 → AS17621 7018483717621
2026-11-10 14:54:06Z origin change 103.202.136.0/22 AS4811 → AS17621 7018483717621
2026-11-10 14:53:46Z origin change 103.36.168.0/24 AS4811 → AS17621 7018483717621
2026-11-10 14:53:46Z origin change 103.36.172.0/24 AS4811 → AS17621 7018483717621
2026-11-10 14:53:46Z origin change 103.36.173.0/24 AS4811 → AS17621 7018483717621
2026-11-10 14:53:01Z origin change 2405:1480:1000::/48 AS17621 → AS4811 48185335641344811
2026-11-10 14:53:01Z origin change 2403:a100::/48 AS17621 → AS4811 48185335641344811
2026-11-10 14:53:01Z origin change 2403:a200:a1ff::/48 AS17621 → AS4811 48185335641344811
2026-11-10 13:14:44Z origin change 120.92.224.0/20 AS59019 → AS17621 50300174483717621
2026-11-10 13:14:44Z origin change 106.75.240.0/20 AS4811 → AS17621 50300174483717621
2026-11-10 13:14:44Z origin change 106.75.224.0/20 AS4811 → AS17621 50300174483717621
2026-11-10 13:13:41Z origin change 120.92.224.0/20 AS17621 → AS59019 5030032574134481159019
2026-11-10 13:13:08Z origin change 106.75.224.0/20 AS17621 → AS4811 503003257413448124811
2026-11-10 13:13:08Z origin change 106.75.240.0/20 AS17621 → AS4811 503003257413448124811
2026-11-10 09:13:15Z origin change 120.92.224.0/20 AS59019 → AS17621 50300174483717621
2026-11-10 09:13:15Z origin change 106.75.240.0/20 AS4811 → AS17621 50300174483717621
2026-11-10 09:13:15Z origin change 106.75.224.0/20 AS4811 → AS17621 50300174483717621
2026-11-10 09:12:20Z origin change 120.92.224.0/20 AS17621 → AS59019 5030032574134481159019
2026-11-10 09:11:49Z origin change 106.75.224.0/20 AS17621 → AS4811 503003257413448124811
2026-11-10 09:11:49Z origin change 106.75.240.0/20 AS17621 → AS4811 503003257413448124811
2026-11-10 09:01:35Z origin change 120.92.224.0/20 AS59019 → AS17621 50300174483717621
2026-11-10 09:01:35Z origin change 106.75.240.0/20 AS4811 → AS17621 50300174483717621
2026-11-10 09:01:35Z origin change 106.75.224.0/20 AS4811 → AS17621 50300174483717621
2026-11-10 09:00:39Z origin change 120.92.224.0/20 AS17621 → AS59019 5030032574134481159019
2026-11-10 09:00:11Z origin change 140.207.199.0/24 AS17621 → AS138421 503001744837138421
2026-11-10 09:00:11Z origin change 140.207.197.0/24 AS17621 → AS138421 503001744837138421
2026-11-10 09:00:06Z origin change 106.75.224.0/20 AS17621 → AS4811 503003257413448124811
2026-11-10 09:00:06Z origin change 106.75.240.0/20 AS17621 → AS4811 503003257413448124811
2026-11-10 08:58:54Z origin change 2403:a100::/48 AS17621 → AS150706 50300174150706
2026-11-10 08:58:52Z origin change 2403:a200:a1ff::/48 AS17621 → AS4811 50300325741344811
2026-11-10 08:58:52Z origin change 2405:1480:1000::/48 AS17621 → AS4811 50300325741344811
2026-11-10 06:16:01Z origin change 202.136.208.0/22 AS17621 → AS4812 34927129941344812
2026-11-10 06:16:01Z origin change 202.136.212.0/22 AS17621 → AS4812 34927129941344812
2026-11-10 06:16:01Z origin change 203.76.208.0/22 AS17621 → AS4811 34927129941344811
2026-11-10 06:16:01Z origin change 203.76.212.0/22 AS17621 → AS4811 34927129941344811
2026-11-10 06:16:01Z origin change 203.76.216.0/22 AS17621 → AS4811 34927129941344811
2026-11-10 06:16:01Z origin change 202.90.96.0/22 AS17621 → AS4811 34927129941344811
2026-11-10 06:16:01Z origin change 202.90.100.0/22 AS17621 → AS4811 34927129941344811
2026-11-10 06:16:01Z origin change 202.90.104.0/22 AS17621 → AS4811 34927129941344811
2026-11-10 06:16:01Z origin change 202.90.108.0/22 AS17621 → AS4811 34927129941344811
2026-11-10 06:16:00Z origin change 150.242.238.0/23 AS17621 → AS4812 34927129941344812
2026-11-10 06:16:00Z origin change 203.76.216.0/22 AS4811 → AS17621 349271299483717621
2026-11-10 06:16:00Z origin change 203.76.212.0/22 AS4811 → AS17621 349271299483717621
2026-11-10 06:16:00Z origin change 203.76.208.0/22 AS4811 → AS17621 349271299483717621
2026-11-10 06:16:00Z origin change 202.136.212.0/22 AS4812 → AS17621 349271299483717621
2026-11-10 06:16:00Z origin change 202.136.208.0/22 AS4812 → AS17621 349271299483717621
2026-11-10 06:16:00Z origin change 202.90.108.0/22 AS4811 → AS17621 349271299483717621
2026-11-10 06:16:00Z origin change 202.90.104.0/22 AS4811 → AS17621 349271299483717621
2026-11-10 06:16:00Z origin change 202.90.100.0/22 AS4811 → AS17621 349271299483717621
2026-11-10 06:16:00Z origin change 202.90.96.0/22 AS4811 → AS17621 349271299483717621
2026-11-10 06:15:59Z origin change 113.21.238.0/24 AS4812 → AS17621 349271299483717621
2026-11-10 06:15:59Z origin change 113.21.237.0/24 AS4812 → AS17621 349271299483717621
2026-11-10 06:15:59Z origin change 103.238.184.0/24 AS4811 → AS17621 349271299483717621
2026-11-10 06:15:59Z origin change 103.234.129.0/24 AS4811 → AS17621 349271299483717621
2026-11-10 06:15:59Z origin change 103.234.128.0/24 AS4811 → AS17621 349271299483717621
2026-11-10 06:15:59Z origin change 103.200.232.0/24 AS4812 → AS17621 349271299483717621