AS7403 — COLBANET

Network type: residential

AS7403 announces 5 IPv4 prefixes covering 12,544 addresses and 0 IPv6 prefixes.

About this network

COLBANET — Colba Net Inc., an independent internet service provider based on rue du Collège in Montreal, Quebec. It announces roughly 12.5k IPv4 addresses.

What it's used for

• Retail internet access in the Montreal area. Reverse DNS across the space is full of subscriber-style names such as 5-80-252-216-dsl.colba.net and 10-96-180-199-dsl.colba.net — DSL lines sold to homes and small businesses.
• Part of the block carries enter-net.com hostnames, a second brand riding the same network.

Notable

• Eyeball address space, not hosting or transit: the -dsl naming convention on customer addresses is the tell.
• A regional Canadian independent, not one of the national incumbents — the routed footprint is a handful of prefixes rather than the thousands a large cable or telco operator carries.

Interesting

• Colba Net has held this ASN since 1996, making it one of the longer-lived independent ISPs in Quebec.

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

Announced prefixes

• 155.254.136.0/21
• 199.102.240.0/22
• 199.180.96.0/22
• 206.123.20.0/24
• 216.252.64.0/19

Upstream networks

• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS1403 EBOX

Adjacent networks

• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS1403 EBOX

Internet exchanges

• CANIX Internet Exchange - Montreal — Montreal, Canada