The ISP I use in the UK [0] has VoIP offerings too, and they let you search for a pattern of numbers. We've got several similar numbers for our businesses and some fun 1234 patterns too. Very memorable!
I have a number ending in 1337 from them. Also keep in mind that their mobile number don't count as VoIP and will work fine for most verification purposes.
[0] https://aa.net.uk/