194.228.0.0/16

Currently announced by AS5610 O2 Czech Republic, in the routed prefix 194.228.0.0/16.

Routing data · Nov 8, 2026, 10:26 UTC

ASN historyEvery routed prefix covering 194.228.0.0/16

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
194.228.0.0/16	AS5610	O2 Czech Republic	Czechia	Before monitoring	2026-11-08 10:26	Announcing

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
194.228.0.0/17	AS5610	O2 Czech Republic	Czechia	Before monitoring	2026-11-08 10:26	Announcing
194.228.72.0/22	AS5610	O2 Czech Republic	Czechia	Before monitoring	2026-11-08 10:26	Announcing
194.228.128.0/17	AS5610	O2 Czech Republic	Czechia	Before monitoring	2026-11-08 10:26	Announcing
194.228.156.0/23	AS204372	PPFBANKA	Czechia	Before monitoring	2026-11-08 10:26	Announcing
194.228.95.0/24	AS206613	TIPSPORT-NET-AS	Czechia	2026-11-04 02:23	2026-11-04 12:25	Stopped

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

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.