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Self-hosting on Telmax: CGNAT, IPv6 & blocked ports
What public sources say about running a home server, VPN or remote access on Telmax. We only list values we could source. Anything blank is unknown, not a "no".
Telmax: Residential fibre
Region: ON (source)
| What | What the source says | Source |
|---|---|---|
| Behind CGNAT by default? | Yes since ~Nov 2025 (silent switch reported); public IPv4 only on 4 Gbps plan / business With CGNAT, many customers share one public IPv4 address, so port forwarding on your router cannot make a home server reachable from the internet over IPv4. | Third-party forum Checked 2026-10-15 |
| Native IPv6 | Not working on lower plans; works on 4 Gbps plan (customer report Dec 2025) 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). | Third-party forum Checked 2026-10-15 |
| Where it's available | Barrie / Newmarket area (ON) per forum threads | Third-party forum Checked 2026-10-15 |
Unknown – help us verify: Network owner or reseller, Underlying network, Access technology, Public IPv4 (may change), Public IPv4 cost (CAD), Static IPv4 on residential plans, Static IPv4 cost (CAD), IPv6 prefix size, Inbound ports blocked, Outbound ports blocked, How to get port 25 opened, Bridge / passthrough mode, Use your own router?, Top upload speed (Mbps), Symmetrical speeds?, Terms of service on servers. Submit a reading.
Check your own Telmax connection
Policies can differ by area, plan and equipment. Use our 2-minute CGNAT check, then tell us what you found.