26 November 1997

The information may also be found in a readily accessible form on the Warwick University pages.

Reading Code Change

Prior to 8th April 1996, the area code for Reading was 01734 with 6-digit local numbers. From 8th April 1996, parallel running of the new area code, 0118, was introduced. This new code has 7-digit local numbers which are the old 6-digit number preceded by 9. Operators, users and maintainers are advised that parallel running of the old and new numbers will cease at 1.00am on Friday 9th January 1998. From this date, only the 0118 code and 7-digit local numbers will work. In particular, maintainers of automatic dialling equipment, including emergency alarms, that have not been re-programmed in the last 18 months are advised to effect any necessary changes in time to meet this date.


Operators and Maintainers are reminded that the range 0118 3XX XXXX range (for new Reading numbers) should be opened from January 1998, as notified previously in Numbering Bulletin 33. Initial allocations will be in the range 0118 37X.

As advised in Numbering Bulletin 29, Operators and Maintainers are reminded that the following ranges should have been available for use from April 1997. The Numbering Unit has since allocated capacity in the new ranges but recent reports indicate that some PBX's may not have been re-programmed to accept these ranges.

Leeds 113 3XX XXXX Leicester 116 3XX XXXX
Sheffield 114 3XX XXXX Bristol 117 3XX XXXX
Nottingham 115 8XX XXXX  


Consultation on proposals for the 05 range to be used for Corporate Numbering ended in October 1997. Responses were received from the telecommunications industry and users. Oftel will be issuing a Statement in December 1997 on the next steps.


Condition B7.5 of the Numbering Conventions states that operators must ensure customers migrating from an analogue to a digital service adopt an 07 number for the new service. To allow operators to plan a uniform number change campaign and to avoid a group of customers being unduly discriminated against, this part of the Convention will not be enforced.

Analogue customers who have migrated to a digital service, and remaining analogue customers, must migrate to 07 by 2001.

In addition 07 numbers must now be issued for new customers by all mobile operators except where this is technically impractical. If operators continue to issue non-07 numbers (without good reason) Oftel will begin withdrawal procedures of the non-conforming codes being so used under the terms of Numbering Convention A9 and will not issue further 07 codes to the operators concerned.

Migration of Mobile numbers to 07

07 codes have now been allocated to mobile operators to enable them to migrate mobile numbers in existing, non-conforming ranges, to the 07 range. The allocations are not included in Annex A of this Numbering Bulletin, but will be included in the Internet tables to be published at the beginning of December.

To ensure that customers can migrate to 07 at the most convenient time for them, operators should ensure that these codes operate in parallel with the existing codes from no later than 1999.

Migration of Paging numbers to 07

Codes for paging migration have not yet been finalised. Further information will be published in the next Numbering Bulletin.


The code 0820 is to be used for schools Internet services. Allocations of numbering capacity will be made in blocks of 10,000 numbers to operators applying for allocation.


Operators and maintainers/ owners of customer premises equipment (CPE) are reminded that the code 0870 is used for national rate numbers. Arrangements should be made to ensure that telecoms networks correctly route calls made to such numbers and that any PhONEday messages instructing callers to "insert a 1" before 0870 numbers are removed. Similarly, CPE should not cause 0870 dialled calls to enter the public telecoms networks as 01870 either by announcement or automatically. Failure in this regard will either cause the call to fail or for it to be mis-routed to the corresponding geographic number.


Internal Network Codes

Currently operators use a variety of codes to effect certain internal network requirements. Continued use of some of these could affect the development of the Numbering Scheme.

In order to regularise the position it has been agreed that a single code be used by all operators for this purpose. Numbers in this code will not be diallable. Oftel will be notifying operators of the code to be used and making allocations of numbering capacity for migration and new requirements shortly. Migration arrangements and associated timescales will be agreed with operators.

'Like-for-like' Numbers

Oftel have received requests for allocation of numbering capacity in one range which will allow the 'numbers' to align with those in another range allocated to the same operator.

As such requests may entail allocation of large amounts of numbering capacity in order to provide the one-for-one correspondence, which would not otherwise be justified and could be seen as favouring certain operators, it has been concluded that allocation of numbering capacity specifically to meet demands for such 'like-for-like' numbers should not be made.

Tariff Discrimination for Non-Geographic Numbers

Oftel are considering modifying Numbering Convention B8.1, which currently defines the maximum tariff which may be charged for calls made to 08 numbers in terms of the 'tariff for standard calls', so that it states explicitly the maximum tariff which may be charged. Oftel will be consulting with industry shortly on specific proposals.

Traditionally Oftel has allocated numbering capacity for Premium Rate Services (PRS) in blocks of 100,000 numbers, or more. Now that allocations of capacity have been made to operators in the new 090 PRS range for migration which allows 'embedding' of the old number in the new code, allocations of new capacity will be made in blocks of 10,000 numbers. This will result in better utilisation of the overall PRS 090 capacity.

As only up to 5 digit following the initial '0' are allowed to be examined to determine the tariff for a call, this will mean that codes in the 090 range will be at defined tariffs, the tariff for a particular code being set by the initial allocation within it.


The European Telecoms Office (ETO) have recently started consideration of the following topics: European Telephony Numbering Space (ETNS), Long Term Strategic Plan for Numbering and Addressing of Telecommunications Services in Europe and the Harmonisation of Short Codes in Europe. A member of the Oftel Numbering Unit recently attended a workshop concerned with the early formulation of ideas on these topics. Progress on these items will be reported in subsequent Numbering Bulletins as information becomes available.


Changes to the Scheme in the period August to October 1997 are summarised below and allocations and reservations made during the same period are shown in Annex 1. Full details of the Scheme are shown on Oftel's Internet pages.

Changes to Date Format on SNS Disk and Internet Download

Users are advised that Status dates in the S Digit 1 listing will be shown in full format from the end of November 1997 e.g. 30 August 1998. This is to ensure that the dates are unambiguous as the year 2000 approaches.

Changes of Operator name on the SNS

The SNS now incorporates the following changes

Area Numbering Range Allocations 208
  Reservations 12
  Other Changes 1809
Find Me Anywhere Numbering Range Allocations 169
  Reservations 2
  Other Changes 41
Special Services Numbering Range Allocations 65
  Reservations 1
  Other Changes 115
Premium Rate Numbering Range Allocations 171
  Reservations 0
  Other Changes 5
Access Codes Allocations 15
  Reservations 0
  Other Changes 0
Total Number of Changes   2613