115.73.0.0/16

Currently announced by AS7552 Viettel, in the routed prefix 115.73.0.0/16.

Current ASN: AS7552; Viettel
Routed prefix: 115.73.0.0/16; Most specific route covering this prefix
ASNs over time: 1; 2 announcement records
RIR allocation: APNIC; Vietnam · 115.72.0.0/13

Routing data · Nov 11, 2026, 18:22 UTC

ASN historyEvery routed prefix covering 115.73.0.0/16

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
115.73.0.0/16	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.72.0.0/13	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing

More specific routes41 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
115.73.0.0/18	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.0.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.8.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.16.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.24.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.32.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.40.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.48.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.56.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.64.0/18	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.64.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.72.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.80.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.88.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.96.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.104.0/22	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.108.0/22	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.112.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.120.0/22	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.124.0/22	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.128.0/18	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.128.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.136.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.144.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.152.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.160.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.168.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.176.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.184.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.192.0/18	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.192.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.200.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.207.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.208.0/20	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.208.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.216.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.224.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.232.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.240.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.248.0/22	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.73.252.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing

Change logAll changes

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

Look up another address

RIR allocation record

Registry: APNIC
Allocated block: 115.72.0.0/13
Country: Vietnam
Allocation date: 2008-07-17
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.