3 articles.
Guides
Free carrier lookup methods (prefix data, regulator tables, web tools), why they fail for ported numbers, and when a paid live lookup is worth it.
10 min read
Guides
What carrier and line type data is, allocated vs current network, how porting changes it, and how to read every field of a carrier lookup answer.
8 min read
Guides
A number's prefix shows the network its range was given to, not the one serving it today. How porting works, where lookups fail and how to handle it.
7 min read
