Phone validation · Ported number lookup
Free tool
Has This Number Been Ported? Ported Number Lookup
What you get
Get 100 free checks a monthNo credit card required.
Check if a US number has been ported.
Shows the original carrier, the current carrier and the ported flag, not who owns the number. Results never get a public URL.
Or try
Example: a San Francisco number now served by Twilio
Example data. A real result for +1 415 992 9960.
Valid
+1 415 992 9960
This US number was ported.
- Carrier type
- Virtual number provider (CPaaS)
- Line type
- VoIP
- VoIP type
- Non-fixed VoIP
- 1
Ported: Yes
The US porting data lists +1 415 992 9960 as ported.
- 2
Lumen holds the range, Twilio serves it
Lumen holds the block the number comes from. Twilio serves the number now.
- 3
The line fields follow Twilio
After the port, line type and carrier type describe Twilio: non-fixed VoIP, virtual number provider (CPaaS). The status stays Valid. Porting does not change it.
What a ported number lookup tells you
Ported
Original carrier
Current carrier
Original carrier vs current carrier
Number ranges are assigned to one operator. A port moves the number to another operator, and the range stays with the first.
For a ported number, line type and carrier type describe the current operator. When that operator has no label, carrier type shows Unknown.
What to do when a number shows Ported: Yes
Porting alone is not a red flag.
Check where the number went.
Read the current line type, not the area code.
Coverage: US numbers and territories
- United States
- Puerto Rico
- US Virgin Islands
- Guam
- Northern Mariana Islands
- American Samoa
Trueguard's porting data covers US numbers only. Canada and the Caribbean countries on +1 get the original carrier only, and the result says porting data covers US numbers only.
Every other country gets the original carrier where it is known. Toll free numbers get no porting data.
Ported number lookup, portability check, carrier lookup
Ported number lookup
Portability check
Carrier lookup
What the lookup can't tell you
Port date or earlier carriers
Routing number (LRN)
Who owns the number
Whether someone answers
Check porting from your code
The same data comes from POST /v2/phone/validation, one number per request. Read line.originalCarrier, line.currentCarrier and line.isPorted. 100 checks a month are free with no card. The Standard plan is $49.99 a month for 20,000 checks, then $0.0025 a check.
curl -X POST https://api.trueguard.io/v2/phone/validation \
-H "X-API-KEY: $YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{"phone":"+14159929960"}'Questions about ported number lookup.
Anything missing? Contact support or read the documentation.
How do I check if a phone number has been ported?
Type the US number with +1 into Trueguard's ported number lookup. It shows the original carrier, the current carrier and a ported yes or no. 5 checks a day are free in the browser with no signup, and an API key gives 100 checks a month free.
Why are the original and current carrier different?
The number was ported. The original carrier holds the number range and the current carrier serves the number now. For +1 415 992 9960 they are Lumen and Twilio.
Does it show when the number was ported?
No. It shows whether a US number is ported and who serves it now. It does not return the port date, earlier carriers or the routing number (LRN).
Which countries does it cover, and why not Canada?
US numbers, including Puerto Rico, the US Virgin Islands, Guam, the Northern Mariana Islands and American Samoa. Trueguard's porting data covers US numbers only, so Canada and the Caribbean countries on +1 get the original carrier only, like every other country.
Is a ported number a fraud risk?
Not by itself. People port numbers when they change provider, and porting does not change the status Trueguard returns. Look at where the number went. A number ported to a virtual number provider and marked non-fixed VoIP sits with an online provider. Check it with the VoIP number checker.
Is this the same as checking if my number can be ported?
No. This shows whether a number has already moved. Whether a number can move to a new provider is a question for that provider.
Does it tell me if the number is active?
No. There is no HLR request and no contact with the network. Valid means the number belongs to a real range.
Is the ported number lookup free?
5 checks a day in the browser with no account. A free API key gives 100 checks a month with no card. Above that, the Standard plan is $49.99 a month for 20,000 checks, then $0.0025 a check. The page checks one number at a time. For more, use the API.
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