Numbering assigned to Colt Technology Services
According to the CNMC numbering register, Colt Technology Services holds 100 assigned blocks with 1,000,000 numbers under 57 prefixes. 1,000,000 of them are landline numbers.
CT
Holder in the register: COLT TECHNOLOGY SERVICES, S.A. UNIPERSONAL.
Landline prefixes
| Prefix | Blocks | Numbers | Of the prefix | Other operators in the prefix | Assigned |
|---|---|---|---|---|---|
| 822 | 1 | 10,000 | 1% | 42 | 5 Feb 2010 |
| 843 | 1 | 10,000 | 1% | 34 | 6 Sept 2007 |
| 848 | 1 | 10,000 | 1% | 43 | 6 Sept 2007 |
| 854 | 1 | 10,000 | 1% | 37 | 18 Dec 2019 |
| 856 | 1 | 10,000 | 1% | 43 | 5 Feb 2010 |
| 858 | 1 | 10,000 | 1% | 43 | 6 Sept 2007 |
| 865 | 1 | 10,000 | 1% | 41 | 5 Oct 2017 |
| 868 | 1 | 10,000 | 1% | 49 | 6 Sept 2007 |
| 871 | 1 | 10,000 | 1% | 42 | 6 Sept 2007 |
| 872 | 1 | 10,000 | 1% | 42 | 6 Sept 2007 |
| 873 | 1 | 10,000 | 1% | 37 | 6 Sept 2007 |
| 876 | 1 | 10,000 | 1% | 45 | 6 Sept 2007 |
| 877 | 1 | 10,000 | 1% | 40 | 6 Sept 2007 |
| 881 | 1 | 10,000 | 1% | 45 | 6 Sept 2007 |
| 886 | 1 | 10,000 | 1% | 42 | 6 Sept 2007 |
| 910 | 7 | 70,000 | 7% | 22 | 9 Jun 2015 – 11 May 2024 |
| 917 | 8 | 80,000 | 8% | 4 | 9 Apr 1999 – 27 Mar 2012 |
| 919 | 11 | 110,000 | 11% | 36 | 12 Mar 2018 – 19 May 2023 |
| 920 | 1 | 10,000 | 1% | 42 | 12 Dec 2008 |
| 921 | 1 | 10,000 | 1% | 43 | 12 Dec 2008 |
| 923 | 1 | 10,000 | 1% | 45 | 5 Feb 2010 |
| 924 | 1 | 10,000 | 1% | 15 | 10 Jul 2009 |
| 925 | 1 | 10,000 | 1% | 18 | 13 Aug 2007 |
| 926 | 1 | 10,000 | 1% | 34 | 12 Dec 2008 |
| 927 | 1 | 10,000 | 1% | 45 | 12 Dec 2008 |
| 928 | 1 | 10,000 | 1% | 10 | 5 Feb 2010 |
| 930 | 2 | 20,000 | 2% | 35 | 26 Jun 2024 |
| 934 | 2 | 20,000 | 2% | 1 | 25 Feb 1999 – 10 May 2001 |
| 935 | 6 | 60,000 | 6% | 12 | 29 Mar 2005 – 5 Nov 2015 |
| 936 | 8 | 80,000 | 8% | 14 | 22 Sept 2016 – 16 Oct 2020 |
| 941 | 1 | 10,000 | 1% | 47 | 10 Jul 2009 |
| 942 | 1 | 10,000 | 1% | 22 | 13 Aug 2007 |
| 945 | 1 | 10,000 | 1% | 46 | 6 Sept 2007 |
| 946 | 1 | 10,000 | 1% | 31 | 8 Nov 2006 |
| 947 | 1 | 10,000 | 1% | 45 | 12 Dec 2008 |
| 949 | 1 | 10,000 | 1% | 43 | 12 Dec 2008 |
| 950 | 2 | 20,000 | 2% | 44 | 5 Feb 2010 – 17 Jul 2024 |
| 951 | 2 | 20,000 | 2% | 29 | 6 Sept 2007 – 18 Dec 2019 |
| 953 | 1 | 10,000 | 1% | 29 | 5 Feb 2010 |
| 955 | 1 | 10,000 | 1% | 20 | 6 Sept 2007 |
| 957 | 1 | 10,000 | 1% | 14 | 6 Sept 2007 |
| 959 | 1 | 10,000 | 1% | 38 | 10 Jul 2009 |
| 960 | 5 | 50,000 | 5% | 49 | 26 Jul 2001 – 17 Jul 2024 |
| 964 | 1 | 10,000 | 1% | 17 | 6 Sept 2007 |
| 965 | 1 | 10,000 | 1% | 9 | 6 Sept 2007 |
| 967 | 1 | 10,000 | 1% | 43 | 5 Feb 2010 |
| 969 | 1 | 10,000 | 1% | 43 | 12 Dec 2008 |
| 974 | 1 | 10,000 | 1% | 44 | 10 Jul 2009 |
| 975 | 1 | 10,000 | 1% | 42 | 10 Jul 2009 |
| 978 | 1 | 10,000 | 1% | 42 | 10 Jul 2009 |
| 979 | 1 | 10,000 | 1% | 42 | 5 Feb 2010 |
| 980 | 1 | 10,000 | 1% | 43 | 5 Feb 2010 |
| 982 | 1 | 10,000 | 1% | 45 | 5 Feb 2010 |
| 983 | 1 | 10,000 | 1% | 21 | 13 Aug 2007 |
| 984 | 1 | 10,000 | 1% | 49 | 5 Feb 2010 |
| 987 | 1 | 10,000 | 1% | 19 | 5 Feb 2010 |
| 988 | 1 | 10,000 | 1% | 44 | 5 Feb 2010 |
An assigned block shows which operator the CNMC gave that numbering to. Because of number portability, a given number may now be with another operator, and a prefix does not identify the caller on its own.
Source
Comisión Nacional de los Mercados y la Competencia (CNMC) · Registro de numeración: bloques de numeración asignados (bd-num) · Data imported on 2 Jul 2026