Numbers with prefix 917 in Spain
917 is a landline prefix for Madrid.
The NoCall community has flagged 1,773 numbers with the 917 prefix: see which ones are spam or telemarketing.
This page shows information about numbers beginning with 917 in Spain. If you received a call from an unknown number with this prefix, search the full number in our database to read community reports and comments. Landline Madrid. Cost: Normal.
Search a number with prefix 917
Search a phone number or a company name (Amazon, PayPal, DHL, Microsoft...) to check if it has been reported as spam.
Operators with numbering in prefix 917
According to the CNMC numbering register, the numbering of prefix 917 is split between 5 operators (1,000,000 of 1,000,000 numbers assigned).
- Movistar88 blocks · 880,000 numbers · 88% of the prefix
- Colt Technology Services8 blocks · 80,000 numbers · 8% of the prefix
- Orange2 blocks · 20,000 numbers · 2% of the prefix
- Aire Networks Del Mediterráneo1 block · 10,000 numbers · 1% of the prefix
- Inetum España1 block · 10,000 numbers · 1% 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 917 activity on NoCall
Between 27 Oct 2026 and 6 Nov 2026 (11 measured days), 1,042 distinct numbers with this prefix were looked up. Adding up, day by day, the distinct IPs that looked one up gives 71 lookups.
See the daily figures
| Day | Distinct IPs |
|---|---|
| 27 Oct 2026 | 14 |
| 28 Oct 2026 | 13 |
| 29 Oct 2026 | 6 |
| 30 Oct 2026 | 9 |
| 31 Oct 2026 | 9 |
| 1 Nov 2026 | 2 |
| 2 Nov 2026 | 2 |
| 3 Nov 2026 | 3 |
| 4 Nov 2026 | 6 |
| 5 Nov 2026 | 4 |
| 6 Nov 2026 | 3 |
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 917
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.
About numbers 917
Landline Madrid. Cost: Normal. A prefix describes an allocation. Portability and caller-ID spoofing mean it cannot identify the caller on its own.
Source and review
Secretaría de Estado de Telecomunicaciones e Infraestructuras Digitales · Document: 2021-02-18 · Reviewed: 2026-08-09
A prefix describes an allocation. Portability and caller-ID spoofing mean it cannot identify the caller on its own.
