This article applies to 123-reg Domain names.
This answer will explain which types of domain name you can transfer into 123-reg.
You can transfer the following domain names to 123-reg:
.com / .net / .org
.co.uk / .org.uk / .me.uk
.biz / .info / .name / .eu
.uk.com / .uk.net / .gb.com / .gb.net / .eu.com / .de.com / .jpn.com / .qc.com / .us.com/ .cn.com / .za.com
.se.com / .sa.com / .kr.com / .ru.com / .hu.com / .no.com / .uy.com / .br.com / .se.net / .ae.org