Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
a contact number
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a contact number" is correct and usable in written English.
You can use it when referring to a phone number that someone can use to reach you or another person. Example: "Please provide a contact number where I can reach you for further information."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(5)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
I left a contact number, but I didn't know what would happen".
News & Media
I had been given only a contact number in Recife and a range of possible dates.
News & Media
A contact number for Daoud & Partners could not immediately be located.
News & Media
At 7.05pm I talked to my producer and discovered that nobody had a contact number for him.
News & Media
Have you ever tried finding a contact number to ask a live person at Amazon where your order is?
News & Media
"Hi … just wondering, do you have a contact number for that glazier you mentioned when we met at X's party?
News & Media
No one explained how her new medication differed from the old, or gave her a contact number for help.
News & Media
Within minutes, they had the man's name and a contact number, and in short time, even his history of seizures.
News & Media
With Lost Mode, you can immediately lock your device and send it a message with a contact number.
Academia
The letter said that el-Hage had been interviewed by the F.B.I. in Kenya, and gave me a contact number for el-Hage.
News & Media
Katrina, Oakley's partner, did not receive a phone call until 3.30am on Tuesday because Parexel had failed to take a contact number for her.
News & Media
Expert writing Tips
Best practice
When providing "a contact number", ensure it's currently active and monitored for messages or calls to ensure prompt communication.
Common error
When sharing "a contact number" internationally, always include the country code to ensure the recipient can dial correctly. Neglecting this can lead to failed communication attempts.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a contact number" functions primarily as a noun phrase. It identifies a piece of information—a telephone number—that allows someone to get in touch with an individual or organization. Examples in Ludwig illustrate its usage in various contexts, such as providing support or gathering information.
Frequent in
News & Media
46%
Wiki
19%
Science
15%
Less common in
Formal & Business
7%
Academia
7%
Reference
0%
Ludwig's WRAP-UP
The phrase "a contact number" is a common and grammatically sound way to refer to a phone number used for communication. As Ludwig confirms, it appears frequently in diverse contexts, from news reports and scientific papers to wiki pages and business correspondence. It is primarily used to facilitate communication, allowing individuals to connect with one another for various purposes.
While the phrase is generally neutral in register, it's important to consider the context in which it's used. For international audiences, always include the country code. Alternatives like "a phone number" or "telephone number" can be used depending on the level of formality required.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
a phone number
Replaces "contact number" with the more specific term "phone number".
a telephone number
Uses the more formal "telephone" instead of "phone".
a method of contact
Replaces "number" with the broader term "method".
a way to reach someone
Focuses on the ability to contact someone, rather than the specific number.
contact details
Refers to a set of contact information, not just a number.
a point of contact
Uses a more formal term for someone who can be contacted.
how to get in touch
Focuses on the process of contacting someone.
an emergency contact
Specifies that the number is for emergencies.
a call-back number
Specifies that the number is for someone to call back.
a hotline number
Highlights a specific number created to provide dedicated support or information for specific matters.
FAQs
How do I properly format "a contact number" in written communication?
Use a format that's easy to read and dial, such as (XXX) XXX-XXXX or XXX-XXX-XXXX. Always include the country code if the number is for international contacts.
What's the difference between "a contact number" and "emergency contact"?
"A contact number" is any phone number used to reach someone. An "emergency contact" is specifically for urgent situations and should belong to someone who can respond quickly.
What can I say instead of "a contact number"?
You can use alternatives like "a phone number", "telephone number" or "call-back number" depending on the context.
Is it safe to share "a contact number" online?
Exercise caution when sharing "a contact number" online. Only provide it to trusted parties and be aware of potential privacy risks.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested