AS12127 — Telefonica Moviles El Salvador S.A. de C.V.

AS12127 announces 10 IPv4 prefixes covering 2,816 addresses and 0 IPv6 prefixes.

About this network

The Movistar mobile network in El Salvador.

What it's used for

• Mobile and fixed access, and the reverse DNS labels which is which. Names run under telefonica-ca.net with a role in front: sv-mobile-apn-4 for the mobile packet gateway, sv-metro-1 for metro access, and a plain ip-sv for the rest.

Notable

• 3,072 addresses across eleven prefixes, ten of them /24s. Two observed BGP neighbours, no IPv6 announced.
• Two blocks in 66.119.92.0/24 and 66.119.94.0/24 are registered as TCOAM-SALVADOR-6 to Telefónica, from a different registry than the rest.
• The 190.57 blocks carry LACNIC-style netnames that are literally the address range they cover, such as 190.57.64.0 - 190.57.127.255, rather than a company abbreviation.

Interesting

• One block's reverse DNS is labelled ip-gt rather than ip-sv. The domain is telefonica-ca.net, where ca is Central America, and the operator ran its networks in several countries off shared regional infrastructure — so a Guatemala label turns up inside the El Salvador AS.
• apn in sv-mobile-apn-4 is the Access Point Name, the gateway a handset asks for by name when it opens a data session. It is the seam between the mobile network and the internet, and numbering them means there is more than one, usually because different services get different treatment on the way out.

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

Announced prefixes

• 66.119.92.0/24
• 66.119.94.0/24
• 190.57.20.0/24
• 190.57.27.0/24
• 190.57.63.0/24
• 190.57.65.0/24
• 190.57.67.0/24
• 190.57.73.0/24
• 190.57.74.0/23
• 190.57.77.0/24

Upstream networks

• AS263783 Telefonica Moviles El Salvador S.A. de C.V.
• AS273189 CA NETWORK S.A. DE C.V.

Adjacent networks

• AS263783 Telefonica Moviles El Salvador S.A. de C.V.
• AS273189 CA NETWORK S.A. DE C.V.