[Weekend Pundit]

Originally Posted by panjumbie

If your installation includes a fiber jumper, the color of the jacket should tell you what type, single mode or one of the several multimode standards:

https://www.lightoptics.co.uk/blogs/...ber-color-code

It is likely any interior fiber jumper will be singlemode as I am not aware of any of the FTTx providers employing multimode fiber.