What is the default login IP for the eir eir fibre box F5366s?

The eir eir fibre box F5366s default login IP is 192.168.1.254 — open http://192.168.1.254 in a browser on the router's own network.

What is the default username for the eir eir fibre box F5366s?

The eir eir fibre box F5366s default admin username is admin. The matching password is unique to your unit and printed on the sticker on the router.

eir eir fibre box F5366s default password & login IP

The eir eir fibre box F5366s ships with a unique password printed on the device label, not a shared default — log in at http://192.168.1.254.

For regaining access to a router you own or administer. If you didn't set it up, ask whoever did.

Login address: http://192.168.1.254
Gateway IP: 192.168.1.254
Username: admin
Password: — on the device label —

The password is unique to your unit and printed on a sticker on the router (often labelled Password or Access Key).

Sagemcom-built 'fibre box' F5366s issued by eir (Ireland) — FTTH plus ADSL/ADSL2+/VDSL2, dual-band Wi-Fi 802.11n/ac, Gigabit LAN, USB media and a VoIP phone port. Web GUI username is admin; the default admin password is unique per unit and printed on the product label (same value as the Wi-Fi password). eir/Sagemcom manual: "In the login screen that appears, enter your password. By default, the password is indicated on the label of the product (same as the Wi-Fi password)."

Factory reset

Use the recessed Reset button on the rear of the unit to factory-reset; this restores the label-printed default password.

More eir models

Source: eir fibre box F5366s User Manual (Sagemcom, hosted on eir.ie) — officialverified · updated 2026-08-16

FAQ

What is the default password for the eir eir fibre box F5366s?: The eir eir fibre box F5366s ships with a unique password printed on the device label, not a shared default — log in at http://192.168.1.254.
What is the default login IP for the eir eir fibre box F5366s?: The eir eir fibre box F5366s default login IP is 192.168.1.254 — open http://192.168.1.254 in a browser on the router's own network.
What is the default username for the eir eir fibre box F5366s?: The eir eir fibre box F5366s default admin username is admin. The matching password is unique to your unit and printed on the sticker on the router.
How do I factory-reset the eir eir fibre box F5366s?: Use the recessed Reset button on the rear of the unit to factory-reset; this restores the label-printed default password.

Verification history (1)

Every time we've checked this model's default credentials, oldest first — including when nothing changed. Absence of change over time is itself the evidence.

2026-08-16First verified· label-unique
source →

All eir models →Identify a device by MAC →Report an error →