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+44-8433-(620000...629999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8433-(620000...629999)
+44-8437-(150000...159999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8437-(150000...159999)
+44-8437-(160000...169999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8437-(160000...169999)
+44-8437-(170000...179999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8437-(170000...179999)
+44-8437-(180000...189999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8437-(180000...189999)
+44-8437-(190000...199999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8437-(190000...199999)
+44-8437-(210000...219999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8437-(210000...219999)
