2001:1248:af40::/42

Currently announced by AS11172 Alestra, in the routed prefix 2001:1248:af40::/42.

Current ASN: AS11172; Alestra
Routed prefix: 2001:1248:af40::/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:af40::/42

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
2001:1248:af40::/42	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing

More specific routes57 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
2001:1248:af40::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af41::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af42::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af43::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af44::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af45::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af46::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af47::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af4a::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af4b::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af4e::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af4f::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af50::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af51::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af52::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af53::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af54::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af55::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af56::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af57::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af58::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af59::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af5a::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af5b::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af5c::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af5d::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af5e::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af5f::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af60::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af61::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af62::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af63::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af65::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af66::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af67::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af68::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af69::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af6a::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af6b::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af6c::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af6d::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af6e::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af6f::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af70::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af71::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af72::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af73::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af74::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af75::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af76::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af77::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af79::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af7a::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af7b::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af7c::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af7d::/48	AS11172	Alestra	Mexico	Before monitoring	2026-11-02 02:24	Announcing
2001:1248:af78::/48	AS11172	Alestra	Mexico	Before monitoring	2026-10-28 04:18	Stopped

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: 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.