AS28387 — Computadoras y Servicios Especiales SA de CV

AS28387 announces 3 IPv4 prefixes covering 4,096 addresses and 1 IPv6 prefixes.

About this network

AS28387 is operated by Blacom (Computadoras y Servicios Especiales SA de CV).

What it's used for

• The address space carries residential and business access traffic, evidenced by reverse DNS entries pointing to blacom.net (e.g., 201-139-181-254.blacom.net).
• The AS announces 4,096 IPv4 addresses across 3 prefixes and 20 IPv6 prefixes, while maintaining only 2 observed routing neighbours. This high address-to-neighbour ratio indicates a regional access provider rather than a transit carrier.

Notable

• Registrants for the largest prefixes are split between Telecomunicaciones Autónomas Sin Límite, S.A. de C.V. (for 201.139.176.0/21 and 45.174.84.0/22) and the AS holder Computadoras y Servicios Especiales SA de CV (for 201.131.200.0/22).
• The inventory consists of a mix of legacy 201.x space and newer 45.x allocations, all concentrated in Mexico.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 45.174.84.0/22
• 201.131.200.0/22
• 201.139.176.0/21
• 2806:300::/32

Upstream networks

• AS32098 Transtelco Inc
• AS1299 Arelion Sweden AB

Adjacent networks

• AS32098 Transtelco Inc
• AS1299 Arelion Sweden AB