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0191 is the UK telephone dialing code used by Newcastle, Durham, Sunderland and other nearby areas in the north east of England[1]. Contents 1 Areas covered 1.1 Future allocation plans 2 History of the code 3 References 4 See also // Areas covered Numbering in the 0191 area is officially divided into three distinct areas, each with their own batches of local subscriber numbers: Number range Official designation[2] Notes 0191 2xx xxxx Tyneside Mainly North Tyneside, Newcastle upon Tyne and parts of Northumberland 0191 3xx xxxx Durham Also Chester-le-Street 0191 4xx xxxx Tyneside Originally exclusive to South Tyneside, Washington, Tyne and Wear and Gateshead 0191 5xx xxxx Sunderland Also East Durham 0191 6xx xxxx Tyneside Primarily VOIP, virtual operators and overflow from 2xx xxxx range for Newcastle city centre. In practice, some of the distinction between these areas has been lost due to differing levels of demand in each area and the need to find sufficient blocks of numbers for the many competing telephone companies that now exist. In particular, the original distinction between north Tyneside (2xx xxxx) and south Tyneside (4xx xxxx) has been obscured as the former range reached full capacity and recent allocations north of the Tyne have made use of spare capacity in the 4xx xxxx range. Further anomalies include Durham prefixes such as (0191) 350 being used by Cable & Wireless in Newcastle city centre[3]. Local dialling omitting the area code and using only the seven digit subscriber number is possible throughout the area, regardless of location or service provider[4]. Future allocation plans On 31 August 2010, Ofcom revealed in consultation[4][5] that it plans to issue remaining unusued numbers in the 0191 area code in a way that preserves three distinct geographical groupings: Number range Planned usage Notes 0191 7xx xxxx Tyneside To supplement local numbers currently beginning 2, 4 and 6. 0191 8xx xxxx Sunderland To supplement local numbers currently beginning 5. 0191 9xx xxxx Durham To supplement local numbers currently beginning 3. History of the code The original 091 area code was introduced in 1982 and phased in over a period of approximately five years. It was the newest two-figure STD code since the STD system was introduced into the UK. It was later changed to 0191 as a part of PhONEday. 0632 → Became (091) 2 and (091) 4 0385 → Became (091) 3 0894 → Became (091) 4 0783 → Became (091) 5 The first area to be converted was Newcastle upon Tyne (0632) and the change over took about 20 months starting in 1982. Newcastle City Centre five-digit numbers in 0632 all began with 2, so 18 months before the scheme started, their numbers were prefixed with 3; that would allow the number 2 to be utilised for the North Tyne numbering part of the scheme. The first exchanges to convert to 7-digit dialling were Blaydon, Birtley, and Washington. Their local 6-digit numbers already began with 4 and were situated south of the River Tyne; to alleviate misdialling and confusion they were the first localities to convert. The main problem was that Blaydon numbers already began with 44 so misdialling in that exchange was inevitable. To prevent misdialling between (0632) 44XXXX and (091) 444 XXXX, a plan was devised to change all South Tyne numbers beginning with the digit 4 to 7 digits by inserting 1 between the first two digits, making them (091) 41X XXXX instead. No similar problems occurred in North Tyneside as number 2 was no longer in use, 5 was not in use in Sunderland, and 3 was never used in Durham. Local numbers were changed as follows: from Birtley 40 to 410, Blaydon 44 to 414 and Washington 46 to 416. At the same time, Ryton, the only exchange in the Newcastle area with 4-figure numbers, was prefixed with 413. Ryton was still utilising the old 089 422 code for Newcastle Ring until its conversion to 091. Ryton was never upgraded to 0632 prior to seven-digit dialling. All other numbers were prefixed with 2 north of the River Tyne and 4 south of it. Sunderland followed with the prefix 5 after the Tyneside scheme was completed, and Durham, again shortly after, with 3. Unlike Tyneside, whose changeover occurred in stages, the entire Durham and the entire Sunderland changeover occurred simultaneously overnight. Five-digit Numbers in Sunderland were prefixed with 51 or 56; e.g., Sunderland (0783) 72000 became (091) 567 2000, and (0783) 43077 became (091) 514 3077. Five-digit Numbers in Durham were prefixed with 38; e.g., Durham (0385) 64411 became (091) 386 4411. References ^ ^ ^ ^ a b ^ See also Telephone numbers in the United Kingdom