72.57.128.0/17

No route covers the whole prefix right now; more specific routes inside it are announced.

Current ASN: —; Not announced
Routed prefix: —; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: APNIC; Hong Kong SAR China · 72.57.128.0/17

Routing data · Nov 2, 2026, 04:24 UTC

ASN historyEvery routed prefix covering 72.57.128.0/17

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
72.57.128.0/17	AS9908	Hong Kong Cable Television Limited	Hong Kong SAR China	Before monitoring	2026-10-26 16:18	Stopped

More specific routes125 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
72.57.128.0/22	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.132.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.133.0/24	AS142115	Hong Kong Cable TV	Hong Kong SAR China	2026-10-23 10:22	2026-11-02 04:24	Announcing
72.57.134.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.135.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.136.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.137.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.138.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.139.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.140.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.141.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.142.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.143.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.144.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.145.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.146.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.147.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.148.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.149.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.150.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.151.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.152.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.153.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.154.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.155.0/24	AS138077	Abhinawa Sumberdaya Asia - AS138077	Indonesia	Before monitoring	2026-11-02 04:24	Announcing
72.57.156.0/24	AS138077	Abhinawa Sumberdaya Asia - AS138077	Indonesia	Before monitoring	2026-11-02 04:24	Announcing
72.57.157.0/24	AS138077	Abhinawa Sumberdaya Asia - AS138077	Indonesia	Before monitoring	2026-11-02 04:24	Announcing
72.57.158.0/24	AS138077	Abhinawa Sumberdaya Asia - AS138077	Indonesia	Before monitoring	2026-11-02 04:24	Announcing
72.57.159.0/24	AS138077	Abhinawa Sumberdaya Asia - AS138077	Indonesia	Before monitoring	2026-11-02 04:24	Announcing
72.57.160.0/24	AS138077	Abhinawa Sumberdaya Asia - AS138077	Indonesia	Before monitoring	2026-11-02 04:24	Announcing
72.57.161.0/24	AS138077	Abhinawa Sumberdaya Asia - AS138077	Indonesia	Before monitoring	2026-11-02 04:24	Announcing
72.57.162.0/24	AS138077	Abhinawa Sumberdaya Asia - AS138077	Indonesia	Before monitoring	2026-11-02 04:24	Announcing
72.57.163.0/24	AS138077	Abhinawa Sumberdaya Asia - AS138077	Indonesia	Before monitoring	2026-11-02 04:24	Announcing
72.57.164.0/24	AS138077	Abhinawa Sumberdaya Asia - AS138077	Indonesia	Before monitoring	2026-11-02 04:24	Announcing
72.57.165.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.166.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.167.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.168.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.169.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.170.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.171.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.172.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.173.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.174.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.175.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.176.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.177.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.178.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.179.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.180.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.181.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.182.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.183.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.184.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.185.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.186.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.187.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.188.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.189.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.190.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.191.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.192.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.193.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.194.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.195.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.196.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.197.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.198.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.199.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.200.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.201.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.202.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.203.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.204.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.205.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.206.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.207.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.208.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.209.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.210.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.211.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.212.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.213.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.214.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.215.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.216.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.217.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.218.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.219.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.220.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.221.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.222.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.223.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.224.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.225.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.226.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.227.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.228.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.229.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.230.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.231.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.232.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.233.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.234.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.235.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.236.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.237.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.238.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.239.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.240.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.241.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.242.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.243.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.244.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.245.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.246.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.247.0/24	AS984	OWS	United States	Before monitoring	2026-11-02 04:24	Announcing
72.57.248.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.249.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.250.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.251.0/24	AS3491	PCCW Global	Hong Kong SAR China	Before monitoring	2026-11-02 04:24	Announcing
72.57.252.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.253.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.254.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing
72.57.255.0/24	AS56286	IX Telecom	Malaysia	Before monitoring	2026-11-02 04:24	Announcing

Change logAll changes

Detected (UTC)	Prefix	Change	ASN	Name	Previous ASN	Country
2026-10-26 18:19	72.57.128.0/17	Withdrawal	AS9908	Hong Kong Cable Television Limited	—	Hong Kong SAR China

Look up another address

RIR allocation record

Registry: APNIC
Allocated block: 72.57.128.0/17
Country: Hong Kong SAR China
Allocation date: 2008-02-26
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.