115.74.192.0/18

Currently announced by AS7552 Viettel, in the routed prefix 115.74.192.0/18.

Current ASN: AS7552; Viettel
Routed prefix: 115.74.192.0/18; Most specific route covering this prefix
ASNs over time: 1; 3 announcement records
RIR allocation: APNIC; Vietnam · 115.72.0.0/13

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

ASN historyEvery routed prefix covering 115.74.192.0/18

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
115.74.192.0/18	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.0.0/16	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 routes45 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
115.74.192.0/20	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.192.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.193.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.194.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.195.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.196.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.197.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.198.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.199.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.200.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.202.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.204.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.205.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.206.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.207.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.208.0/20	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.210.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.212.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.213.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.214.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.215.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.217.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.218.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.220.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.222.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.224.0/20	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.224.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.226.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.227.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.228.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.229.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.230.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.232.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.235.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.236.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.237.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.238.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.240.0/20	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.240.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.242.0/23	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.244.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.245.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.246.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.250.0/24	AS7552	Viettel	Vietnam	Before monitoring	2026-11-11 18:22	Announcing
115.74.255.0/24	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.