116.99.128.0/17

Currently announced by AS7552 Viettel, in the routed prefix 116.99.128.0/17.

Current ASN: AS7552; Viettel
Routed prefix: 116.99.128.0/17; Most specific route covering this prefix
ASNs over time: 1; 3 announcement records
RIR allocation: APNIC; Vietnam · 116.96.0.0/12

Routing data · Nov 8, 2026, 10:26 UTC

ASN historyEvery routed prefix covering 116.99.128.0/17

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
116.99.128.0/17	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.0.0/16	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.96.0.0/12	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing

More specific routes29 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
116.99.128.0/21	AS24086	Viettel Corporation	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.136.0/21	AS24086	Viettel Corporation	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.144.0/22	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.148.0/22	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.152.0/22	AS24086	Viettel Corporation	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.156.0/22	AS24086	Viettel Corporation	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.160.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.168.0/21	AS24086	Viettel Corporation	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.176.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.184.0/21	AS24086	Viettel Corporation	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.192.0/21	AS24086	Viettel Corporation	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.200.0/21	AS24086	Viettel Corporation	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.208.0/21	AS24086	Viettel Corporation	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.216.0/21	AS24086	Viettel Corporation	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.224.0/21	AS24086	Viettel Corporation	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.232.0/21	AS24086	Viettel Corporation	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.240.0/21	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.248.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.248.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.249.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.250.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.250.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.251.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.252.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.252.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.253.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.254.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.254.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
116.99.255.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	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: 116.96.0.0/12
Country: Vietnam
Allocation date: 2007-05-18
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.