148.209.0.0/16

Currently announced by AS22122 UNIVERSIDAD AUTONOMA DE YUCATAN, in the routed prefix 148.209.0.0/16.

Current ASN: AS22122; UNIVERSIDAD AUTONOMA DE YUCATAN
Routed prefix: 148.209.0.0/16; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: LACNIC; Mexico · 148.209.0.0/16

Routing data · Nov 2, 2026, 06:27 UTC

ASN historyEvery routed prefix covering 148.209.0.0/16

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
148.209.0.0/16	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing

More specific routes40 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
148.209.13.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.14.0/23	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.15.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.16.0/22	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.21.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.25.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.26.0/23	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.28.0/23	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.31.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.32.0/21	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.40.0/23	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.42.0/23	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.44.0/22	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.48.0/23	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.51.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.52.0/23	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.60.0/23	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.62.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.63.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.64.0/21	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.70.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.72.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.73.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.74.0/23	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.76.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.80.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.81.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.82.0/23	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.84.0/23	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.91.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.92.0/22	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.96.0/21	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.102.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.104.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.108.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.110.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.112.0/22	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.117.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.120.0/22	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	Announcing
148.209.126.0/24	AS22122	UNIVERSIDAD AUTONOMA DE YUCATAN	Mexico	Before monitoring	2026-11-02 06:27	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: LACNIC
Allocated block: 148.209.0.0/16
Country: Mexico
Allocation date: 1993-11-29
Status: assigned

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.