Law Enforcement Agencies, Public Safety Providers and 911 Service Providers must register with Neustar for a PIN. The registration form is located at http://www.npac.com/the-npac/access/law-enforcement-agencies-psaps/ivr-system/ivr-registration.

The IVR number is 571-434-5781. If this number is unavailable, users may call 704-583-8311 to reach the Secondary IVR system.

Once your request is received, it can take up to 1-2 business days to establish a PIN.

Yes, the IVR for automated telephone number lookup is a free service offered to police, law enforcement, and public safety agencies.

The IVR system allows you to check up to 20 telephone numbers per call.

No, the IVR system only provides information on ported telephone numbers. The IVR will notify you if a number is has not been ported.

To confirm your organization’s PIN, please contact the Neustar personnel listed on the IVR Registration page.

Technical difficulties with the IVR systems, please call IVR Support at 571-434-5432 or email IVR@neustar.biz .

Urgent PIN requests can be escalated to Peggy Gilliam at 502-653-3860 or by email at peggy.gilliam@neustar.biz .

Use of the IVR system, including the receipt of a PIN, is strictly limited to the following:

• Law Enforcement Agencies - agencies of the United States or of a State or political subdivision thereof that are empowered by law to conduct investigations of or to make arrests for violations of federal, state or local laws.

• PSAPs - entities performing Public Safety Answering Point (PSAP) functions in the performance of their official duties.

Neustar personnel will contact you via telephone to provide you the PIN. For security reasons, Neustar will not email PIN information.

No, the IVR system is a telephone-based service.

The four characters refer to the carrier's Service Provider ID (SPID), the unique industry identifier for each carrier.

“Not ported” means that the telephone number has not been moved to another carrier and that it still resides with carrier originally assigned that area code and prefix. You can use the NANPA to look up the originally assigned carrier of an area code and prefix.

The North American Numbering Plan (NANP) is the numbering plan for the public switched telephone network for Canada, the US and its territories, and the Caribbean. The North American Numbering Plan Administration (NANPA) holds the overall responsibility for the neutral administration of NANP number resources, subject to directives from regulatory authorities.

Go to NANPA's public website at http://www.nanpa.com  and click on the Central Office Code Reports. Go to Central Office Code Utilized Report and select the U.S. state or territory of the telephone number and the area code (NPA). You will receive a listing of all prefixes that correspond to the assigned Carrier.

Please call us at (571) 434- 5432 to inquire about the status of your PIN.