Historic numbering plan pre-1992
Before 1992, telephone numbers would consist of a 2 or 3-digit area code, and a 5 or 6-digit subscriber number. Example: (067) 85 000 and (04) 66 00 00.
In that year, a closed telephone numbering plan was adopted, with eight-digit telephone numbers incorporating the area code and full number dialling for local and national calls. Service numbers were to be three digits long, Directory numbers four digits and some companies were allocated five-digit numbers, ex. 07575. GSM telephony was introduced in 1993, and those numbers always start with the digit '4' or '9'.
Historically, the local operator would take emergency calls and forward them to the police, fire or local doctor. In 1964, the emergency number 000 was introduced. In 1985, a modernized emergency service was started at Haukeland hospital in Bergen for Hordaland. In 1986, the emergency numbers diverted to 001 for fire brigade, 002 for police and 003 for ambulance. These numbers changed to 110, 112 and 113 in 1994, when the international access code changed from 095 to 00.
Geographic numbers, 1993-present
- 2x xx xx xx: Geographic numbers, mainly Oslo
- 32 xx xx xx: Geographic numbers in Buskerud
- 33 xx xx xx: Geographic numbers in Vestfold
- 35 xx xx xx: Geographic numbers in Telemark
- 37 xx xx xx: Geographic numbers in Aust-Agder
- 38 xx xx xx: Geographic numbers in Vest-Agder
- 5x xx xx xx (except 58 and 59): Geographic numbers in south-western counties, including Bergen
- 6x xx xx xx: Geographic numbers in south-eastern counties and Oppland
- 7x xx xx xx: Geographic numbers in the mid and north, from Møre og Romsdal, Trøndelag (Trondheim) and northern Norway
- 8xx xx xxx: Non-geographical numbers (toll-free, voicemail, premium-numbers, television shows, etc.)
- 9xx xx xxx: Mobile numbers (older)
- 4xx xx xxx: Mobile numbers (newer)
- 58x xxx xxx xxx: Mobile numbers (M2M traffic)
- 59x xx xxx: Mobile numbers (newer, M2M traffic)
- 110: Fire brigade
- 112: Police
- 113: Ambulance
- 00: International prefix
- 01: Reserved for future changes
- 02xxx to 09xxx: 5-digit non-geographical numbers (these numbers are mostly equivalent to 815 non-geographical numbers, and can be acquired by any company or organization given availability and a yearly fee between NOK 3.300 and NOK 125.000 per year)
- 100-189: Standardised special numbers (emergency numbers, road and public transport information, etc.)
- 19x: Operator-specific special numbers
- 1850 to 1899: Directory services
- 116xxx: Harmonised services of social value
A more complete plan is available from the Norwegian Post and Telecommunications Authority.