Phone numbers in tel: URLs contain spaces in contravention of RFC3966

[pv2b]

Deployment Type

Self-hosted

NetBox Version

v4.0.3

Python Version

3.11

Steps to Reproduce

1. Set the phone number for a contact to a number with spaces, e.x. +1 800 123 45 67
2. Go to the contact detail page and hover over the phone number, and observe the link generated. (This also applies to the contact list table.)

Expected Behavior

The URL generated should be tel:+18001234567, removing spaces as per RFC3966 section 5.1.1:

However, even though ITU-T E.123 [E.123] recommends the use of space characters as visual separators in printed telephone numbers, "tel" URIs MUST NOT use spaces in visual separators to avoid excessive escaping.

Observed Behavior

The URL generated is actually tel:+1 800 123 45 67 which neither strips nor URL-encodes the spaces.

Inspecting the HTML code would show something like:

<a href="tel:+1 800 123 45 67">+1 800 123 45 67</a>

[pv2b]

The relevant function to change looks like it's here:

netbox/netbox/utilities/tables.py

Lines 26 to 32 in 56b6b1b

	def linkify_phone(value):
	"""
	Render a telephone number as a hyperlink.
	"""
	if value is None:
	return None
	return f"tel:{value}"

[pv2b]

Can confirm this is still present in v4.0.5