2001:1248:c380::/42

Currently announced by AS11172 Alestra, in the routed prefix 2001:1248:c380::/42.

Current ASN: AS11172; Alestra
Routed prefix: 2001:1248:c380::/42; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: LACNIC; Mexico · 2001:1248::/32

Routing data · Nov 2, 2026, 02:24 UTC

ASN historyEvery routed prefix covering 2001:1248:c380::/42

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
2001:1248:c380::/42	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing

More specific routes18 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
2001:1248:c380::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c381::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c382::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c383::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c384::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c385::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c386::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c388::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c389::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c38a::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c38b::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c38c::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c38d::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c38f::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c390::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c391::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:c392::/48	AS11172	Alestra	Mexico	2026-10-21 22:21	2026-11-02 02:24	Announcing
2001:1248:c393::/48	AS11172	Alestra	Mexico	2026-10-27 18:22	2026-11-02 02:24	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: LACNIC
Allocated block: 2001:1248::/32
Country: Mexico
Allocation date: 2008-01-08
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.