123.231.0.0/17

Currently announced by AS18001 Dialog Axiata PLC, in the routed prefix 123.231.0.0/17.

Current ASN: AS18001; Dialog Axiata PLC
Routed prefix: 123.231.0.0/17; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: APNIC; Sri Lanka · 123.231.0.0/17

Routing data · Nov 11, 2026, 20:24 UTC

ASN historyEvery routed prefix covering 123.231.0.0/17

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
123.231.0.0/17	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing

More specific routes20 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
123.231.0.0/18	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.0.0/21	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.8.0/21	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.24.0/21	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.32.0/21	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.44.0/22	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.48.0/21	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.56.0/21	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.64.0/19	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.64.0/21	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.72.0/21	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.80.0/21	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.84.0/22	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.88.0/21	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.96.0/19	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.96.0/21	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.104.0/22	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.108.0/22	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.116.0/22	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-11 20:24	Announcing
123.231.64.0/24	AS18001	Dialog Axiata PLC	Sri Lanka	Before monitoring	2026-11-03 16:27	Stopped

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: 123.231.0.0/17
Country: Sri Lanka
Allocation date: 2007-02-15
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.