Numbers with prefix 623 in Spain

Operators with numbering in prefix 623

According to the CNMC numbering register, the numbering of prefix 623 is split between 2 operators (1,000,000 of 1,000,000 numbers assigned).

• Yoigo9 blocks · 900,000 numbers · 90% of the prefix
• Avatel Móvil1 block · 100,000 numbers · 10% of the prefix

Because of number portability, a given number may have moved to another operator after the assignment. Source: Comisión Nacional de los Mercados y la Competencia (CNMC)

Prefix 623 activity on NoCall

Between 27 Oct 2026 and 6 Nov 2026 (11 measured days), 776 distinct numbers with this prefix were looked up. Adding up, day by day, the distinct IPs that looked one up gives 64 lookups.

Each bar is the number of distinct IPs that searched NoCall (web or app) for any number with this prefix that day (UTC days); an IP counts once a day however many numbers it looks up, and it may be a bot. Days without a complete measurement are left empty. Reports are only those sent by NoCall users and approved after review (no imported data or comments), counted per distinct user, and are shown from 3 users. A lookup does not mean the number is a scam. Updated on 7 Nov 2026

No numbers reported with prefix 623

We do not have public reports for this prefix yet. Try searching a full number or submit a report if you just received a suspicious call.