Abstract of all allocated codes in the SNS - National numbers starting 20

select entry in Code column to view full DE allocations in that range

Code	DEF	Operator	Use	Notes
2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019			London National Dialling
2020, 2021, 2022, 2023, 2024, 2025, 2026, 2027, 2028, 2029			London expansion
2030, 2031, 2032, 2033, 2034, 2035, 2036, 2037, 2038, 2039			London
2040, 2041, 2042, 2043, 2044, 2045, 2046, 2047, 2048, 2049, 2050, 2051, 2052, 2053, 2054, 2055, 2056, 2057, 2058, 2059, 2060, 2061, 2062, 2063, 2064, 2065, 2066, 2067, 2068, 2069			London expansion
2070, 2071, 2072, 2073, 2074, 2075, 2076, 2077, 2078, 2079, 2080, 2081, 2082, 2083, 2084, 2085, 2086, 2087, 2088, 2089			London
2090, 2091, 2092, 2093, 2094, 2095, 2096, 2097, 2098			London expansion
2099			London Emergency Services