117.2.128.0/19

Currently announced by AS7552 Viettel, in the routed prefix 117.2.128.0/19.

Current ASN: AS7552; Viettel
Routed prefix: 117.2.128.0/19; Most specific route covering this prefix
ASNs over time: 1; 2 announcement records
RIR allocation: APNIC; Vietnam · 117.0.0.0/13

Routing data · Nov 8, 2026, 10:26 UTC

ASN historyEvery routed prefix covering 117.2.128.0/19

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
117.2.128.0/19	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.0.0.0/13	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing

More specific routes22 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
117.2.128.0/20	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.128.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.129.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.130.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.131.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.132.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.133.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.135.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.136.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.138.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.140.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.143.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.144.0/20	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.144.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.146.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.147.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.148.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.149.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.150.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.153.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.156.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-08 10:26	Announcing
117.2.158.0/24	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.

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RIR allocation record

Registry: APNIC
Allocated block: 117.0.0.0/13
Country: Vietnam
Allocation date: 2007-05-21
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.