01633

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01633
01633 is located in the United Kingdom
01633
01633
United Kingdom area code for Newport
National calling 01633
International calling +44 1633
Conservation Yes[1]
Active since 16 April 1995
Previous code(s) 0633
Number format 01633 xxxxxx
Coverage
01633 is located in Newport, Wales
Maesglas
Maesglas
Savoy
Savoy
Chartist
Chartist
Maindee
Maindee
Rhiwderin
Rhiwderin
Caerleon
Caerleon
Castleton
Castleton
Cwmbran
Cwmbran
Machen
Machen
Llanwern
Llanwern
Magor
Magor
Penhow
Penhow
Risca
Risca
Tredunnock
Tredunnock
Area served Newport
Cwmbran
Machen
Magor
List of United Kingdom codes

The 01633 telephone area code covers the city of Newport and surrounding areas in the United Kingdom. Before PhONEday the area code was 0633, which was originally dialled as "0NE3" where the "NE" were formed from the first two letters of NEwport on the telephone dial. In common with all other British area codes the initial '0' is a trunk prefix that is dropped when dialling from abroad.

Coverage[edit]

The 14 exchanges listed in the table below form the 01633 code area as of 2012:

Exchange Premises
OLO code Name Residential Business
SWNE/EX[2] Newport Savoy 20,967 1,620
SWNE/CH[3] Newport Chartist 8,852 190
SWMDE[4] Maindee 12,003 434
SWRWI[5] Rhiwderin 6,660 110
SWCAA[6] Caerleon 4,161 161
SWMES[7] Maesglas 3,666 90
SWUWN[8] Llanwern 2,153 62
SWCTE[9] Castleton 1,564 54
SWPHX[10] Penhow 786 47
SWMAD[11] Machen 1,227 28
SWRDX[12] Risca 5,009 234
SWCRS[13] Cwmbran 20,268 905
SWTUC[14] Tredunnock 355 25
SWMGR[15] Magor 2,477 99

History[edit]

The Group switching centre (GSC) for the Newport charge group was the Savoy exchange. This exchange alongside the Chartist, Maindee and Maesglas exchanges formed the Newport linked numbering scheme whereby local numbers could be dialled directly and with the STD code 0633. The surrounding dependent exchanges could be accessed via local codes and longer STD codes based on 0633.

Dependent exchanges[edit]

Smaller exchanges around the GSC were parented onto it. From them the digit 9 was dialled to access the GSC. The codes from the GSC to the dependent exchanges are listed in the table below:

Exchange Local code Original STD code
Cwmbran 3 063 33
Llanwern 41 063 341
Caerleon 42 063 342
Rhiwderin 43 063 343
Risca 44 063 344
Penhow 45 063 345
Machen 46 063 346
Magor 47 063 347
Castleton 48 063 348
Tredunnock 49 063 349

To dial from one dependent exchange to another one first dialled 9 to access the GSC then dialled the local code to the destination exchange. Thus a caller from Machen to Magor would dial 947 before the subscriber's number and a caller from Risca to Cwmbran would dial 93. A caller to a Newport number in the linked numbering scheme would simply dial 9.

Changes[edit]

Over time the local codes were abolished and the dependent exchanges became part of the linked numbering scheme. This meant the 3, 4 and 5-digit numbers became 6-digit numbers by means of a prefix that was unique in the 0633 code area.

  • By 1983 Llanwern 4-digit numbers (2000–3999) were prefixed with 41.
  • Caerleon 4-digit numbers were prefixed by 42. All were 6-digit by 1976.
  • Rhiwderin 4-digit numbers were prefixed by 89.
  • Risca 3-digit numbers were prefixed by 600 and 4-digit numbers prefixed by 61. All were 6-digit by 1974.
  • Penhow 3-digit numbers were prefixed with 400. All were 6-digit by 1983.
  • Machen 3-digit numbers were prefixed with 440. All were 6-digit by 1983.
  • Magor 3-digit numbers were prefixed with 880. All were 6-digit by 1983.
  • Castleton 3-digit numbers were prefixed with 680. All were 6-digit by 1979.
  • Tredunnock 3-digit numbers were prefixed with 450.
  • Cwmbran 4-digit numbers (2000–5999) were prefixed with 48 and 5-digit numbers (60000–79999) were prefixed with 8.

The remaining 5-digit numbers in the Newport area (50000–59999 and 62000–69999) were prefixed with 2 in 1990. Since then all numbers have been 6-digit and the previous prefixes have been reused by other communications providers.

References[edit]

  1. ^ "The National Telephone Numbering Plan" (PDF). Ofcom. 31 May 2012. Archived from the original on 2012-07-10. 
  2. ^ "Newport Savoy Exchange". Samknows. Retrieved 12 October 2012. 
  3. ^ "Newport Chartist Exchange". Samknows. Retrieved 12 October 2012. 
  4. ^ "Maindee Exchange". Samknows. Retrieved 12 October 2012. 
  5. ^ "Rhiwderin Exchange". Samknows. Retrieved 12 October 2012. 
  6. ^ "Caerleon Exchange". Samknows. Retrieved 12 October 2012. 
  7. ^ "Maesglas Exchange". Samknows. Retrieved 12 October 2012. 
  8. ^ "Llanwern Exchange". Samknows. Retrieved 12 October 2012. 
  9. ^ "Castleton Exchange". Samknows. Retrieved 12 October 2012. 
  10. ^ "Penhow Exchange". Samknows. Retrieved 12 October 2012. 
  11. ^ "Machen Exchange". Samknows. Retrieved 12 October 2012. 
  12. ^ "Risca Exchange". Samknows. Retrieved 12 October 2012. 
  13. ^ "Cwmbran Exchange". Samknows. Retrieved 12 October 2012. 
  14. ^ "Tredunnock Exchange". Samknows. Retrieved 12 October 2012. 
  15. ^ "Magor Exchange". Samknows. Retrieved 12 October 2012. 

Coordinates: 51°35′37″N 2°59′55″W / 51.5937°N 2.9987°W / 51.5937; -2.9987