1. Remove duplicate numbers（去除重复号码）
Merged lists often repeat the same mobile number. 去除重复号码 keeps one copy of each number.
DEDUPE AND REGION · 号码魔方
号码魔方 dedupe and regions: repeat counts, blocklist and China regions
坚守者号码魔方 cleans merged lists on your PC, then files numbers by Chinese province and city.
2. Export by repeat count（按照重复次数导出）
按照重复次数导出 writes numbers seen only once, numbers seen twice, or numbers seen three or more times across the files you imported.
3. Remove a blocklist（去除黑名单）
Load a local blocklist TXT or CSV. 去除黑名单 drops every hit and shows how many rows were removed.
4. Split by China region, offline
No network lookup is required. 归属地区分 uses the built-in prefix book to map numbers to Chinese provinces and cities and can save one folder per region.
5. Block selected provinces or cities
If you do not cover a province or city, turn on 屏蔽指定地区 and type those names. Matching numbers are removed before export. You can also keep only the regions you type.