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Self-hosting on Cogeco: CGNAT, IPv6 & blocked ports

What public sources say about running a home server, VPN or remote access on Cogeco. We only list values we could source. Anything blank is unknown, not a "no".

Service

Residential

Region: ONQC source

CGNAT by defaultUnknownNative IPv6Yes (dynamic, prefix delegation supported)Port 25Blocked inboundPort 80Not blocked on network; reserved on Cogeco router (use bridge)Port 443Not blocked on network; reserved on Cogeco router (use bridge)Static IPv4No
WhatWhat the source saysSource
Inbound ports blockedSMTP TCP 25/465/587/2525 + SNMP UDP 161 (inbound only); 'no other ports are blocked'

Inbound blocks stop people on the internet from reaching a service on that port at your home, even if you forward it.

ISP official page
Checked 2026-10-15
Outbound ports blockedNone stated (block is inbound only)

Outbound blocks stop your home network from connecting out on that port. Outbound port 25 blocks mean a home mail server cannot deliver mail directly.

ISP official page
Checked 2026-10-15
NotesOn Cogeco-provided routers TCP/UDP 80 and 443 are reserved for Cogeco and cannot be forwarded (use bridge mode + own router)ISP official page
Checked 2026-10-15
Bridge / passthrough modeBridge mode via tech support; not with TiVo, WiFi Pods or extenders

Bridge or passthrough mode lets your own router take the public IP so you control the firewall and port forwards.

ISP official page
Checked 2026-10-15
Terms of service on serversResidential T&C: 'For personal and residential purposes only'ISP official page
Checked 2026-10-15
Top upload speed (Mbps)30 on cable (UltraFibre 1Gig, ON); up to 940 in parts of Burlington/Oakville; FttH is symmetricalISP official page
Checked 2026-10-15
Symmetrical speeds?FttH yes; cable noISP official page
Checked 2026-10-15
Static IPv4 on residential plansNo - residential gets dynamic IPv4 and IPv6 that change periodically

A static IP never changes. A public dynamic IP plus dynamic DNS is enough for most home servers; a static IP matters for mail servers and allow-lists.

ISP official page
Checked 2026-10-15
Native IPv6Yes, dynamic; Prefix Delegation supported

With native IPv6, each device can get a globally routable address, which is one way to reach a home server even when IPv4 is behind CGNAT (if the remote side also has IPv6).

ISP official page
Checked 2026-10-15

Unknown – help us verify: Network owner or reseller, Underlying network, Where it's available, Access technology, Behind CGNAT by default?, Public IPv4 (may change), Public IPv4 cost (CAD), Static IPv4 cost (CAD), IPv6 prefix size, How to get port 25 opened, Use your own router?. Submit a reading.

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