RDAP / Whois lookup

Look up authoritative registration records for a domain, IP, network prefix or ASN. Subdomains are resolved to their registrable domain automatically.

AS28521

Record foundLACNIC

28521DIRECT ALLOCATION

RDAP is structured authoritative registration data. Registration records and contacts do not establish current routing, device location or network safety.

Queried at10/20/2026, 03:45:41Local authoritative snapshot

ASN profile Network topology BGP routes

Resource type: Autonomous system
Registry: LACNIC
Registration country / region: Not provided by registry
Registration status: Active
Registered at: 3/13/2006, 12:00:00
Last changed: 8/23/2016, 21:27:38

Resource rangeAS28521 – AS28521Autonomous system

Resource records1ASN count

Public contacts3Published by the registry

Registry events2Authoritative change record

Authoritative registration details

Registry handle: AS28521
Name: 28521
Allocation type: DIRECT ALLOCATION
Parent handle: Not provided by registry
Whois server: whois.lacnic.net
Authoritative RDAP host: rdap.lacnic.net

Address and number range

Resource range: AS28521 – AS28521
Address family: Not applicable
Resource records: Not applicable

Registration entities and contacts

Only public fields from the authoritative RDAP response are shown. Roles are assigned by the registry.

3 entities

Registrant

AT&T COMUNICACIONES DIGITALES S DE RLMX-ACDS-LACNIC

+52 554115000

PISO 20 COL. CUAUHTEMOC · RIO LERMA · CUAUHTEMOC · 06500 · MX

Administrative

Security IP CoreCHA24

ac087b@att.com+52 5541150000

Cuauhtemoc · Río Lerma · Cuauhtemoc · 06500 · MX

TechnicalAbuse

OMAR SANCHEZ HERNANDEZOSH9

os321b@att.com+52 5591402800

piso 20 Colonia Cuauhtémoc · Río Lerma · Cuauhtémoc · 06500 · MX

Registration and change events

2 events

Event	Time (UTC)	Actor
Last changed	8/23/2016, 21:27:38	Not provided by registry
Registration	3/13/2006, 12:00:00	Not provided by registry

Terms and remarks

Registry notices are shown verbatim so their authoritative meaning is not altered.

2 notices

descriptionAutonomous System AS28521 from MX-ACDS-LACNIC

Terms and ConditionsThis is the LACNIC RDAP service. Objects are in RDAP format.

CHA.LA authoritative RDAP snapshotIANA Bootstrap only locates the responsible registration service. Data comes from the corresponding RIR or domain registry and is cached locally by query target.Authoritative source: LACNIC · rdap.lacnic.net