S Digit 1/2 List, SA=18
national numbers starting 180
(SAB=180)
national numbers starting 181
(SAB=181) Geographic - unassigned (formerly London Outer Area, National Dialling), Geographic - unassigned (formerly London Outer Area)
national numbers starting 182
(SAB=182)
national numbers starting 183
(SAB=183)
national numbers starting 184
(SAB=184)
national numbers starting 185
(SAB=185)
national numbers starting 186
(SAB=186)
national numbers starting 187
(SAB=187)
national numbers starting 188
(SAB=188)
national numbers starting 189
(SAB=189)