On this page
  1. How to read a German fax number
  2. A missing digit can slip through
  3. German prefixes to watch for
  4. No number yet? Try the Impressum
  5. Two things a fax can’t do in Germany
  6. How far ahead of you Germany is
  7. Send your fax to Germany with FaxTonic

How to read a German fax number

FaxTonic reads all the usual forms. Our examples come from ranges that Germany’s telecom regulator, the Bundesnetzagentur, keeps unassigned for films and books.

What you see, and what to type
Printed asWhat it isWhat to type
030 23125 000 or (030) 23125 000Domestic formAs printed
+49 30 23125 000International formAs printed
+49 (0)30 23125 000Both: the (0) is for callers inside GermanyAs printed. We drop the 0
0049 30 23125 00000 is Germany’s exit code, like our 011As printed
011 49 30 23125 000How you’d dial from a US phoneChange 011 to +, as in +49 30 23125 000. With Germany selected, 011 is refused, and a bare 49 isn’t reliable

The hyphen is the German twist. On a direct-dial line (Durchwahl), the regulator’s rules count a fax machine as an extension (Nebenstelle), so phone and fax can share everything up to a final ending. The regulator’s own contact page shows its numbers that way.

So 089 99998-100 and 089 99998-199 are two separate numbers. Type the whole thing, hyphen included: FaxTonic reads it as +49 89 99998199 and dials every digit. A US-style “ext.”, “x” or “#” is different, and FaxTonic refuses it.

Check the label too: Telefon is voice, Telefax is fax. If you only have the office number, ask for the fax ending rather than guess.

A missing digit can slip through

A US fax number always has 10 digits, so a dropped digit stands out. Germany has 5,200 local areas, with area codes two to five digits long, and its rules leave room for up to 13 digits after the 0, shorter switchboard numbers and older short numbers.

So FaxTonic only catches a number that’s far too short or too long. Drop the last digit of 089 99998-199, and 089 99998-19 still passes.

At the review step, compare the +49 number with your source, digit by digit. A wrong number that a machine answers counts as delivered, and a delivered fax isn’t refunded. To match a code to a town, use the regulator’s area code list.

German prefixes to watch for

German prefixes and how FaxTonic treats them
Starts withWhat it isFaxTonic
015, 0160, 0162, 0163, 017Cell numbers (Mobilfunk)Refused: a cell phone can’t receive a fax
0164, 0168, 0169PagersRefused
0137Mass-call lines for phone votes and contestsRefused
0180, 0700, 0900Service, personal and premium-rate numbersRefused
0800Toll-free. You still pay our page priceAccepted, but delivery isn’t promised. Ask for a regular number
032National numbers with no town attachedAccepted

Austria (+43) and Switzerland (+41) have their own country codes, and FaxTonic doesn’t send to either. The international fax guide lists where we do.

No number yet? Try the Impressum

If the office wrote to you, use the number on its letter or form. Otherwise, check its website. Commercial German sites must keep an Impressum, an easy-to-find notice of who runs the site. Look there for “Telefax” or “Fax”.

It may not be listed. Section 5 of the Digitale-Dienste-Gesetz, Germany’s digital services law, requires an address and an email address, but not a fax number. Use the email address to ask.

Two things a fax can’t do in Germany

  • Replace a signed original. Under German law, where a statute requires written form (Schriftform), Section 126 of the Civil Code calls for the issuer’s own signature on the document. In 2015, the Federal Labor Court held that a fax doesn’t meet this, since the receiving machine only reproduces a copy of the signature. If that may apply to you, ask the recipient or a German lawyer first.
  • Get through on every line. In 2018, an advisory committee at the Bundesnetzagentur said faxing is possible in principle on IP phone networks, but that errors and dropped connections can’t be ruled out, especially on long faxes. If one number keeps failing, the fix may be at the far end: Deutsche Telekom’s 2018 tips for its IP lines list settings a fax owner can check.

How far ahead of you Germany is

The US changes its clocks on the second Sunday of March and the first Sunday of November, Germany on the last Sundays of March and October. In the weeks between, the gap shrinks by an hour.

Hours Germany is ahead of the main US time zones
Your time zoneMost of the yearBetween the clock changes
Eastern65
Central76
Mountain87
Pacific98
Alaska109

Hawaii and most of Arizona don’t change clocks, so their gap moves only with Germany’s.

The price doesn’t change with the hour. Timing only matters if someone must collect the pages today: 9 a.m. in Los Angeles is usually 6 p.m. in Germany.

Send your fax to Germany with FaxTonic

  1. Save your document as PDF, JPEG, and PNG, up to 20 pages, cover included. An A4 form shrinks slightly to fit US Letter.
  2. Open FaxTonic and add it. For a cover in German, use the German app, where prices show in euros, not dollars.
  3. Put your phone number or email on the free cover page. FaxTonic can’t receive a fax, so the office can’t fax back to the US number in the page header.
  4. Choose Germany and type the number, hyphen ending included.
  5. Compare the digits at the review step, check the total ($1.59 a page) and pay by card.
  6. Follow the status page. “Delivered” means the machine in Germany confirmed the fax: it’s a record of sending, nothing more. If the fax fails, the “What to check” box gives any reason the carrier supplied.
  1. FaxTonic’s first step on a phone: a two-page sample PDF added, with page previews and the free cover page switched on.

    Add your file. The cover page is free, and you can turn it off.

  2. FaxTonic’s second step: the United States chosen as the country, a fax number typed in, and the price per page.

    Pick the country and type the fax number.

  3. FaxTonic’s third step: a preview of the cover page, the fax number, the page count and the total, with the button to go to payment.

    Check the cover page, the number and the total before you pay.

  4. A FaxTonic status page marked Delivered, with the time each step happened.

    Track your fax: the status page shows when it’s delivered.

Screens from the FaxTonic app on a phone, with a sample document and a made-up fax number.

If the fax can’t be delivered, the refund is automatic: we keep a fee of $0.30 + 2.9% and return the rest, or return everything if our fax provider refused the fax when we submitted it. A delivered fax isn’t refunded, even to a wrong number. See the refund policy.

Official sources

  1. Bundesnetzagentur: Ortsnetzrufnummern (structure of German landline numbers, 5,200 local areas)
  2. Bundesnetzagentur: Order 25/2006 on landline number structure, version in force from July 30, 2026 (PDF)
  3. Bundesnetzagentur: area codes and local areas
  4. Bundesnetzagentur: numbers reserved for media productions (“Drama Numbers”)
  5. Bundesnetzagentur: overview of German number ranges
  6. Bundesnetzagentur: numbering plan for mobile services (PDF)
  7. Bundesnetzagentur: (0)164, (0)168, (0)169 paging numbers
  8. Bundesnetzagentur: (0)137 mass-call numbers
  9. Bundesnetzagentur: (0)800 numbers free for the caller
  10. Bundesnetzagentur: (0)32 national subscriber numbers
  11. Bundesnetzagentur: contact page
  12. ITU: Dialling procedures (international and national prefixes, number lengths)
  13. ITU: list of E.164 country codes
  14. German Digital Services Act (DDG), Section 5: general information duties
  15. German Federal Commissioner for Data Protection (BfDI): digital services and the Impressum duty
  16. German Civil Code (BGB), Section 126: written form
  17. Federal Labor Court of Germany: decision 6 AZR 709/14 of December 17, 2015
  18. ATRT, advisory committee at the Bundesnetzagentur: IP migration and fax (April 20, 2018)
  19. Deutsche Telekom: tips for sending faxes on IP-based lines (April 16, 2018, PDF)
  20. German Summer Time Order (SoZV), Section 2: start and end of summer time
  21. German Units and Time Act (EinhZeitG), Section 4: legal time
  22. NIST: daylight saving time rules in the United States
  23. 15 U.S. Code § 261: US standard time zones
  24. 15 U.S. Code § 263: names of the US time zones

FaxTonic is an independent fax service. It isn’t affiliated with or endorsed by any agency, insurer, court or company named in this guide. Fax numbers and rules change: when a letter or form gives you a fax number, use that one.