NAP Consistency: Name, Address, Phone the Same Everywhere

Why consistency matters

Search engines compare details from many sources. When they match, trust increases. Discrepancies such as “Str.” and “Straße”, old telephone numbers or different company names look like different businesses.

How to go about it

1. Define: Write down the correct spelling of name, address, telephone, email and web address.
2. Collect: Search for your company and note all the listings.
3. Compare: Mark the discrepancies.
4. Correct: Adjust listings or have outdated ones deleted.
5. Maintain: Whenever something changes, update all sources.

Where to check

• Your own website (legal notice, contact page, footer)
• Google Business Profile
• Trade directories and chambers
• Social networks
• Review portals

Example: a table shows the discrepancies

Suppose a hair salon creates a simple table with the columns source, name, address, telephone and status. The check shows: the website and Google profile say “Salon Beispiel”, a trade directory says “Beispiel Friseure GmbH”. The address is “Hauptstraße 5” in the legal notice, “Hauptstr. 5” in the directory and, in an older listing, still the address from before the move. Two telephone numbers are in circulation. The table shows which listings need to be adjusted and which need to be deleted or merged. Most of the effort lies in finding the listings; making the changes themselves is usually quick.

Details that are often forgotten

• Legal form and suffix: “GmbH”, “e. K.” or a slogan in the name. Decide whether the name appears with or without a suffix, and stick to it.
• Districts and postcode: Stuttgart-Mitte or Stuttgart, house number with or without an addition.
• Telephone format: Written with the area code, the country code or a slash. The format should be uniform.
• Opening hours and category: These are not NAP in the strict sense, but have a similar effect if they contradict each other.
• Secondary locations and old company names: Listings from earlier phases often stay around for years.

Myth versus fact

• Myth: Every discrepancy costs ranking points. Fact: Google usually recognises minor differences such as “Str.” versus “Straße”. What is critical is differing names, wrong addresses or several telephone numbers without an obvious reason.
• Myth: The more listings, the better. Fact: What should count are directories that are actually used or that suit your industry. Mass listings in unknown portals usually achieve little and create maintenance work.

Decision aid for a move or a change of name

1. First update your own website and your Google Business Profile, because other sources are often matched against them.
2. Then the most important directories and chambers.
3. Last, the secondary sources and social media profiles.
4. Do not leave old listings in place; delete them or bring them up to date.

Employees and partners who pass on your details should also be told the current spelling. A short document with the definitive spelling serves as a reminder. Setting up the profile is described in Optimising your Google Business Profile.

Who takes care of maintenance

Appoint one person who owns the definitive spelling and works through the list of sources whenever something changes. Without clear responsibility, listings tend to be left as they are. With branches, it is advisable to have a separate row in the table for each location so that details do not get mixed up. Check the list once a year, even without a reason.

An example case

Suppose a business changes its website and Google profile after a move, but forgets two trade directories. Customers who search there end up at the old address; navigation services sometimes adopt the same information. The damage does not show up in a metric, but in lost visitors and calls. This is exactly the kind of case the list of sources prevents.

Note

Consistent details also help AI assistants, which compare information from several sources. More in Google Business Profile.