+44-8444-(400000...409999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Baca lebih lanjut mengenai +44-8444-(400000...409999)
+44-8450-(160000...169999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Baca lebih lanjut mengenai +44-8450-(160000...169999)
+44-8700-(830000...839999): Special Services higher rate: BT’s Standard National Call Retail Price for BT customers Baca lebih lanjut mengenai +44-8700-(830000...839999)
+44-9051-(390000...399999): Special Services, open ended time dependent charge or fixed fee up to £1.50 for BT customers Baca lebih lanjut mengenai +44-9051-(390000...399999)
+44-9055-(850000...859999): Special Services, open ended time dependent charge or fixed fee up to £1.50 for BT customers Baca lebih lanjut mengenai +44-9055-(850000...859999)
+44-844-(4400000...4409999): Shared Cost Services Baca lebih lanjut mengenai +44-844-(4400000...4409999)
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