140.210.16.0/20

Currently announced by AS137697 CHINATELECOM JiangSu YangZhou IDC networkdescr: YangZhou , Jiangsu Province, P.R.China., in the routed prefix 140.210.16.0/20.

Current ASN: AS137697; CHINATELECOM JiangSu YangZhou IDC networkdescr: YangZhou , Jiangsu Province, P.R.China.
Routed prefix: 140.210.16.0/20; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: APNIC; China · 140.210.0.0/17

Routing data · Nov 2, 2026, 00:27 UTC

ASN historyEvery routed prefix covering 140.210.16.0/20

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
140.210.16.0/20	AS137697	CHINATELECOM JiangSu YangZhou IDC networkdescr: YangZhou , Jiangsu Province, P.R.China.	China	Before monitoring	2026-11-02 00:27	Announcing

More specific routes3 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
140.210.16.0/21	AS56046	CMNET-Jiangsu-AP	China	Before monitoring	2026-11-02 00:27	Announcing
140.210.19.0/24	AS63658	Bangrunkeji	China	2026-10-29 06:23	2026-11-02 00:27	Announcing
140.210.24.0/21	AS56046	CMNET-Jiangsu-AP	China	Before monitoring	2026-11-02 00:27	Announcing

Change logAll changes

The routes covering this address have had no origin changes since ASNBase started monitoring.

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RIR allocation record

Registry: APNIC
Allocated block: 140.210.0.0/17
Country: China
Allocation date: 2011-03-14
Status: allocated

From the RIRs’ delegated statistics files. Shows where the addresses are registered, not where they are used.

How monitoring works

Every 2 hours ASNBase takes the bgp.tools global routing table (prefix → origin ASN) and compares it with the previous one. The detected time is the time of that comparison; the actual change can be up to about 2 hours earlier.
Only routes seen by more than 100 bgp.tools peers are listed as changes; routes with less visibility are only kept in the history.
A new announcement counts only if it is still in the next routing table, and a withdrawal only if the prefix is missing from two tables in a row, so short flaps are ignored.
ASNBase has been monitoring since 2026-10-19. “Before monitoring” under “First seen” means the route was already announced when monitoring started; the earlier date is unknown.
Prefixes first seen during the first day of monitoring do not count as new announcements: most of them were simply missing from the table at the moment monitoring started.
Countries and regions follow the ASN’s registration, not the actual location of the IP addresses.