How to Get a Denmark Phone Number for SMS
Rent a real +45 mobile number for a single verification in the MarioSMS app or at app.mariosms.com. Pick the service, choose Denmark, and the code shows up in the app or dashboard, usually within a minute. Prices start at $0.04 and depend on the service and country. If no SMS arrives, the price is refunded to your balance automatically.
You can check current stock on the Denmark numbers page before topping up. Top-ups work by card or crypto, and the same balance covers all 35+ countries in stock. If you’re new to how a one-time code reaches a phone, the SMS verification entry explains the basic flow.
Who needs a +45 number
Three groups ask for Danish numbers most often:
- Travellers staying a few weeks who want to sign up for local delivery, transport or ticketing apps without putting their home number on another account.
- Expats in their first months in Denmark who have kept a foreign SIM and need a Danish-format number for a registration while their local contract is still being set up.
- QA teams testing OTP flows for Danish users. They need to confirm that the sign-up form accepts the +45 prefix with an 8-digit national number, that the SMS template renders correctly, and that the code arrives on a real mobile network.
Each of these is a privacy or testing use. Using a rented number to get around a ban or to pose as someone else is not allowed, as the acceptable use page states.
What one rental gives you and how long it lasts
One rental gets you one real Danish mobile number for one number activation. The number stays assigned to you while its timer runs, and the timer is shown next to the number in the app. During that window, the service you chose sends its code and MarioSMS displays it. When the window closes, the rental ends. If no code came in during that time, the cancellation and refund happen automatically, so you don’t need to file a support ticket. Plan to finish the sign-up while the timer is still running, because the number won’t be there for a later login code.
Why do sign-up services check that your number is Danish?
What a service sees when you type a +45 number
When you enter a phone number, the sign-up form splits it into a country code and a national number. A Danish number is +45 followed by eight digits, with no leading zero. The service then compares that code with other signals from your session, such as the region you picked, your app store country and your language setting. If you choose Denmark but type a +44 or +1 number, that mismatch alone can stop the sign-up or trigger extra checks.
Many services also run a number-type lookup against a carrier database. Danish numbers can move between operators, so the first digits don’t reliably show which network a number is on. The lookup asks which operator holds the number now and whether it is mobile, fixed line or VoIP. The answer decides whether the service sends an SMS at all.
Real mobile numbers versus VoIP and landline ranges
Services filter by number type because they want one account per real person and fewer bulk sign-ups. A VoIP number can be created in large batches at little cost, so many platforms block those ranges for SMS verification. Landlines usually can’t receive SMS, so they get dropped as well.
| Number type | Typical lookup result | Common outcome at sign-up |
|---|---|---|
| Danish mobile on a carrier SIM | Mobile, Danish operator | Code sent |
| Danish VoIP range | VoIP or non-geographic | Often rejected |
| Danish landline | Fixed line | No SMS, sometimes a voice call |
| Foreign mobile | Mobile, different country | Accepted or flagged, depending on the service |
Services also count how often a number has been used. A number that has already registered several accounts on the same platform can be refused even if it passes the mobile check.
Why a single-use rental fits a one-time code
A one-time code is valid for a few minutes and gets checked once. A rented non-VoIP number gives the service what it checks for at that moment, a +45 country code on a mobile line. It receives the code and is released when the activation timer ends. With MarioSMS you pay for that one code, from $0.04 depending on the service. You don’t pay a monthly fee for a Danish SIM you would only use for a single sign-up.
How do you get a +45 number in the MarioSMS app, step by step?
The process is identical on iOS, Android and the web app at app.mariosms.com. It takes six steps and usually under two minutes, from an empty balance to a code on screen. The screenshot shows the key moment, where you pick the service first and then Denmark in the country list.
Steps 1 to 3: top up, pick the service, choose Denmark
- Top up your balance. Open the balance screen and add funds by card or crypto. A few dollars covers several verifications, since prices start at $0.04 per number.
- Pick the service. Search for the app or website you are signing up for. Each service has its own price, because availability differs.
- Choose Denmark. Select Denmark (+45) in the country list, check the price shown next to it and confirm. The number appears straight away with its activation timer running.
The timer is your number activation window. The number is reserved for you until it runs out, so do the next steps without long pauses. In the screenshot, the code arrives in the app the same way it will for you, usually within a minute of requesting it.
Pick the service, then Denmark in the country list
Steps 4 to 6: copy the number, request the code, read it in the app
- Copy the number. Tap the number to copy it. Danish numbers have 8 digits after the +45 country code.
- Request the code. Paste the number into the sign-up form. If the form has its own country selector, set it to Denmark and paste only the 8 digits so +45 isn’t entered twice. Then tap “send code”.
- Read the code in the app. The SMS shows up on the activation screen in the app or dashboard. Copy the OTP into the form before the service’s own expiry runs out.
If the timer ends without an SMS, the activation cancels and the price goes back to your balance automatically. You don’t need to file a ticket or ask for a refund. You can pick another Denmark number for the same service and try again, as shown in the image of a Denmark number set up for SMS verification.
The code arrives in the app, usually within a minute
Doing the same through the REST API for test runs
QA teams testing OTP flows can run the same six steps in code. The MarioSMS REST API takes a service and a country, returns a rented number, and lets your script poll for the incoming SMS. The documentation includes examples in Python, Node.js, Go and PHP.
A typical test run requests a +45 number and passes it to the sign-up form under test. It then polls until the code arrives and asserts that the form accepts it. Billing and timers work the same as in the app. An activation that gets no SMS cancels and refunds itself, so a failed run costs nothing. See Denmark numbers for which services are currently in stock.
Which services and prices are in stock for Denmark numbers?
Which services have the most Denmark numbers in stock
The table below lists the services with the most +45 numbers available right now. Stock counts change during the day as numbers are rented, used and returned to the pool, so read each figure as a snapshot of the current moment, not a guarantee for later.
Denmark numbers: most stocked services
| Service | Price | Numbers in stock |
|---|---|---|
| Discord | $0.67 | 5,112,761 |
| Steam | $0.67 | 3,076,209 |
| baidu | $0.14 | 2,286,435 |
| grindr | $0.05 | 2,178,401 |
| bigolive | $0.67 | 1,796,179 |
| KakaoTalk | $0.46 | 1,773,260 |
| $0.18 | 1,636,803 | |
| zoho | $0.14 | 1,454,225 |
| $0.60 | 1,369,756 | |
| eBay | $1.55 | 1,306,792 |
| Blizzard | $0.25 | 1,148,009 |
| careem | $0.60 | 1,139,747 |
Source: MarioSMS catalog, 2026-10-02. Price per number, stock in brackets.
Stock is counted separately for each service. Once a number has received a code from one service, it is spent for that service but can still be offered for others. Popular services use up their pool faster, while smaller services keep larger counts. A high count matters because you can rent a fresh number quickly if the first one gets no code.
Cheapest Denmark numbers today
| Service | Price | Numbers in stock |
|---|---|---|
| grindr | $0.05 | 2,178,401 |
| proton | $0.08 | 587,959 |
| noon | $0.10 | 367,001 |
| Leboncoin | $0.12 | 327,143 |
| baidu | $0.14 | 2,286,435 |
| zoho | $0.14 | 1,454,225 |
| alipay | $0.14 | 592,346 |
| rebtel | $0.14 | 7,394 |
Source: MarioSMS catalog, 2026-10-02. Price per number, stock in brackets.
What the cheapest Denmark numbers cost today
The second table sorts Denmark numbers by price, cheapest first. MarioSMS prices start at $0.04 per number and vary by service and country, so the same +45 number can cost a different amount depending on which service sends the code.
Each price follows supply and demand for that service on Danish numbers. A cheap Denmark number is the right pick when the service accepts any working Danish mobile number and you need one verification, such as a QA test account. If no code arrives before the timer ends, the activation cancels and the price returns to your balance.
When to pick another country instead of Denmark
Many services do not check the country code at all. If a sign-up form accepts any international number, Denmark has no advantage over the other 35+ countries in stock, and another country may offer more numbers or a lower price for the same service.
| Situation | Better pick |
|---|---|
| Service requires a +45 number or a Danish region | Denmark |
| Account, app store region or content is tied to Denmark | Denmark |
| Service accepts any country code | Cheapest country with stock |
| Denmark stock for the service is low or at zero | Another EU country, such as Belgium |
| QA run covering several locales | One number per target country |
Before you rent, look up the same service in a few countries and compare price and stock side by side. The guides for Belgium and the Philippines use the same steps as this one. Check Denmark numbers again before each test run, because a service at zero in the morning can be restocked by the afternoon.
What should you do when no SMS arrives on your Denmark number?
Most codes reach a +45 number within a minute. If yours hasn’t arrived, the cause is usually on the sending side. The screenshot shows a rented Denmark number in the app with its countdown running. Until that countdown ends, the number is reserved for your one verification.
A Denmark number, reserved while the timer runs
How the activation timer works
Every number activation comes with a timer, and the code appears in the app or dashboard as soon as the SMS lands. If the timer runs out with no SMS, the activation cancels on its own and you get the price back, as the image below shows.
The timer is long enough for a normal sign-up and a single resend. It isn’t meant to hold a number for days. If you need to get the code again on a later visit, a second activation is the cleaner route. The checklist below covers the common reasons a code is late or never sent.
A checklist for codes that do not arrive
- Check the number format. Danish numbers are eight digits with no leading zero. Enter them as +45 followed by those eight digits. If the form has a separate country dropdown, pick Denmark and paste only the eight digits. Otherwise the service may read the number as +45 45 and send nowhere.
- Wait before you press resend. Give the first message about a minute, then resend once. Many services run their own resend countdown, and several requests in a short window can get the number throttled.
- Look for service-side limits. Some services refuse a number already linked to another account, block new sign-ups from a region for a while, or show a “try again later” message without sending anything. If the form offers a voice call or an SMS, choose SMS.
- Try a fresh number. Cancel the activation or let the timer expire, then rent another +45 number for the same service. A number the service flagged once will keep failing, while a different one often goes through on the first attempt. Check Denmark numbers for current stock first.
What happens to your balance when the timer runs out
If no SMS arrives before the timer ends, the activation cancels and the full price goes back to your balance automatically. You don’t need to open a ticket, take a screenshot or contact support. The refunded amount is available right away, so a failed attempt costs you the time you waited, not the money.
That makes it cheap to follow step 4. With prices starting at $0.04 per number, rerunning a stuck +45 verification on a fresh number usually costs a few cents of your balance, and the money only leaves your balance when a code actually arrives.
What can you legitimately use a rented Denmark number for?
A rented +45 number covers one verification. You receive one code, the activation window closes, and the rental ends. That works well for some jobs and badly for others. MarioSMS sets out where the line falls in its acceptable use policy.
Accepted uses: privacy, second accounts, OTP testing
- Privacy hygiene. You can try a Danish marketplace, forum or delivery app without giving it your personal number. Once a personal number is shared, it can end up on marketing lists and in leaked databases.
- Second accounts for legitimate reasons. You might want a separate profile for a side project, a work persona or a shop page, kept apart from your personal account. This applies only where the platform’s own terms allow a second account.
- QA and OTP testing. Developers can check that a sign-up flow sends an OTP to a real Danish number, time how many seconds the SMS takes, and confirm the code field accepts it. The REST API has Python, Node.js, Go and PHP examples, so these checks can run from a test script.
What is not allowed and why recovery matters
You may not use these numbers to get around a ban, to impersonate another person or business, or to mass-register accounts that abuse a service. Doing any of these breaks the acceptable use policy.
A one-time rental also has a practical limit. A temporary phone number is yours only during its activation window. Months later, a service may send a code to reset your password, confirm a new device or turn on two-factor authentication. That code goes to a number you no longer control. Any account you plan to keep for years should be registered with a SIM you own.
Denmark phone number for SMS: frequently asked questions
Six short answers for anyone renting a +45 number for one code, covering price, speed, refunds and API access.
How much does a Denmark number for SMS cost?
MarioSMS prices start at $0.04 per number, and the exact price depends on the service and the country. Two services can have different prices for the same Danish number pool, since each service is priced separately. You choose the service first, and the app shows its +45 price before you confirm the number activation.
How fast does the verification code arrive?
The code usually appears in the app or dashboard within a minute of the service sending it. It shows beside the rented number, so there is no separate inbox to check. If nothing arrives, confirm you entered +45 followed by all eight digits on the sign-up form. Then keep waiting inside the activation window.
Can I keep the Denmark number after I get the code?
No. Each rental covers one verification. When the activation window ends, you lose access to the number and to any later SMS sent to it. A rented +45 line is a good fit for a single sign-up or a test run. It is a poor fit for any account that will need recovery codes later.
Do I get my money back if no code comes?
Yes. Every number has a timer. If no SMS arrives before the activation window closes, the activation cancels and the price goes back to your MarioSMS balance automatically. There is no ticket to open and no refund to request. You can spend that balance on a fresh +45 number or on the same service in another country.
Can I get a Denmark number without being in Denmark?
Yes. The number is a real Danish mobile line. You read its SMS from any country in the iOS app, the Android app or the web app at app.mariosms.com. The code is delivered to the +45 line, so your own location does not affect whether you receive it. Current Danish stock is on the Denmark numbers page.
Can developers automate Denmark numbers for testing?
Yes. The MarioSMS REST API lets a test suite request a +45 number and read the incoming OTP without opening the app. The docs include examples in Python, Node.js, Go and PHP. A QA script can run one sign-up flow per rental. Any number that gets no SMS before its timer runs out is refunded to the balance automatically.