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Denmark +45

International code · Europe

How to dial

Calling from abroad +45 XX XX XX XX

Dial +45, then the local number. Generate the full number →

No trunk prefix — dial local and long distance numbers directly.

Mobile length
8 digits
Mobile prefixes
XX XX XX XX
International format
+45 XX XX XX XX
Domestic trunk
(none)

Sign-up availability

What to expect when signing up for these services with a physical SIM from this country:

ChatGPT Works
Claude Works
WhatsApp Works
Telegram Works
LINE Works
WeChat Works
X Works
TikTok Works
Gemini Works

Applies to every platform: VoIP / virtual numbers and heavily-reused number pools get rejected. Physical SIM only.

Checked 2026-09-12. Platform region policies and number-range allocations change — always confirm against each platform’s official supported-regions list and the carrier’s notices.
2 sources

How to read a number

+4521234567

+45Country code
Denmark.
2Mobile prefix
Denmark has a closed, non-geographic 8-digit plan: numbers carry no information about where in the country they belong, and local and national calls are dialled identically.
1234567Remaining 7 digits
The subscriber number.

Dialled domestically as these 8 digits; there is no trunk prefix.

Number ranges & quality

RangeTypeNotes
2x, 30, 31, 40–42, 50–53, 60, 61, 71, 81, 91–93 (8 digits) Mobile carrier Denmark has a closed, non-geographic 8-digit plan: numbers carry no information about where in the country they belong, and local and national calls are dialled identically. The plan sorts ranges into three groups — primarily fixed, primarily mobile, and reserve — and the ones listed here are the primarily-mobile ones. Note “primarily”, not exclusively: dozens of three-digit sub-ranges (342, 344–349, 356–357, 431, 441, 771–772 and more) have been reassigned to mobile. So an 8-digit number roughly tells you mobile or fixed, but never the operator.
37, 12 digits Other Reserved for machine-to-machine (M2M) communication, 12 digits. Not numbers for people.
Intl SMSStable
Virtual-number riskLow
ID requiredPrepaid requires real-name registration.

Physical SIMs can sign up without issues.

Carriers & prefixes

Mobile prefixes by carrier.

Number portability applies — a prefix only shows the original carrier.

Porting rules in full

The right to port is unconditional: every 8- and 12-digit number can move, and you don't have to sit out a binding period or a notice period first. The deadline is one working day — by the end of the working day after the request reaches the donor provider (though the port only happens once your subscription with the new provider has started). The right survives for at least a month after you cancel. If a port is delayed or abused, the provider owes you reasonable compensation.

One way Denmark differs from most countries: moving a number between fixed and mobile is not a right. The official guidance states that if you switch from a fixed-line provider to one that only offers mobile, you have no claim to take the number with you. Providers may offer it voluntarily, but they don't have to.

Since numbers move, a range only tells you who it was originally allocated to.

  • TDC Mobile carrier

    The former state operator; its consumer brands today are mainly YouSee and Telmore, both under Nuuday. In the Danish Agency for Digital Government's 2025 group list, TDC A/S covers DKTV, Hiper and Nuuday.

  • Norlys Mobile carrier

    On 28 February 2024 the Danish Competition Council cleared, with conditions, Norlys' acquisition of Telia's Danish business (mobile, broadband and TV); the condition is that Norlys opens its own fibre network to other service providers on equal terms. So “Telia Denmark” is Norlys today; in the official group list, Norlys Holding covers Norlys Mobil and Mit Tele.

  • Telenor Mobile carrier

    One of the four operators with their own network.

  • 3 Mobile carrier

    Listed officially as Hi3G; owned by CK Hutchison.

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