NAS Registration Questions

1. What is NAS?

The NANP Administration System (NAS) provides an automated system for processing number resource applications, collecting resource utilization and forecast data and issuing notifications to the industry on numbering matters. Deployed in 2004, NAS is the primary tool used by federal and state regulators, service providers, service provider consultants and the NANPA in the assignment and administration of the various NANP resources.

2. Who is eligible to register for NAS?

US and non-US service providers operating within the geographic area served by the NANPA, consultants authorized to request numbering resources, e.g. requesting a 9YY code or a Carrier Identification Code (CIC).

3. How do I get answers to questions about NAS registration and use?

NANPA's Customer Support Desk personnel are ready and able to assist you with any questions you have about registering or using NAS. The Customer Support Desk can be reached by calling 1-866-623-2282, via email to, or via our on-line support area accessible through the NANPA website ( under "Contact Us".

4. Where do I go on the NANPA website to access NAS?

On the NANPA home page, highlight "NAS Login". You can then either register as a first time user (New Registration) or log into the system (Login to NAS). (Note: remember that if you also receive thousand-block numbering resources from the National Pooling Administrator you must use the same login ID for both PAS and NAS systems.)

5. How will I be notified of my password?

The user is responsible for contacting the NANPA Login Administrator at 1-866-623-2282 to receive your Username (Login User ID) and password.

6. How long will it take to get a password after submitting my registration?

The timeline for responding to a registration request or profile update is no more than five (5) business days, unless the Login Administrator is waiting for additional information and documentation from the user. The five (5) business days begin upon submittal of a registration or profile update.

7. Can I specify my password?

No. Per security requirements, your password will be automatically generated by the system and users will be unable to specify their password.

8. When does my password expire and will I be notified prior to expiration?

NAS passwords expire after 180 days. NAS will inform the user the password is set to expire with 1) a notification when the user logs into NAS starting thirty (30) days prior to the password expiring and 2) sending the user an email fourteen (14) calendar days prior to the password expiration date and 3) sending an additional email 5 calendar days prior to the expiration date. To reset your password, log into NAS, click on "User Profile" and then "Reset Password". Your password will automatically be reset to a new password when you click on "Continue". You will need to make a note of the password displayed and use it the next time you login.

9. What do I do if I forget my password?

Contact the NANPA Customer Service Desk at 1-866-623-2282 or send an email to

10. What if I make several mistakes when entering my password? Will I be locked-out of NAS?

Per security requirements, you will have three attempts to successfully log into NAS. After the third attempt, you will need to contact the Customer Support Desk in order to gain access to NAS.

11. Where do I direct questions concerning NAS registration?

Contact the NANPA Customer Service Desk at 1-866-623-2282 or via email at

12. Is there a time period by which I must access my NAS profile?

Yes. You must log into NAS with the system-generated password within (14) calendar days of receiving your password or your profile will be disabled. In addition, when you initially log into the system, you will be required to reset your password.

13. On the Service Provider registration, can the company and headquarters address be the same?


14. What must be entered in the Supervisor's User Id field on the Service Provider registration page?

This is an optional field that permits the user to enter the NAS User ID of their immediate supervisor. The supervisor must be registered in NAS and received a Login User ID and password. This will permit the supervisor access to the same information as the registered user. When registering, enter your supervisor's NAS User ID.

15. What is an ACNA and is it required as part of the Service Provider registration?

ACNA is the acronym for "Access Customer Name Abbreviation." This is an optional field for user registration. It is provided on the Service Provider registration because it is a required field (three-character alpha) on all Carrier Identification Code (CIC) applications. An ACNA assignment can only be obtained by application to the Common Language Group at iconectiv (Tel. 732-699-5577).

16. Do the "Additional Contacts" on the Service Provider and Service Provider Consultant registration have to be registered NAS users?

No. There are up to four additional contacts that can be added to a NAS profile. Three additional contacts can be designated to receive CO code responses (Part 3s) and reclamation documents (Part 4 responses, reminder notices), and the AOCN contact will receive Part 3s. When registering, you will enter the email addresses for the individuals identified under Additional Contacts and AOCN contact.

17. What is a Letter of Authorization (LOA) in relation to registering in the NAS?

All consultants who register as a new NAS user or add OCNs to their existing NAS user profile must have a letter of authorization (LOA) on file for each service provider for whom they intend to submit requests.

The LOA should:

    • Be on the company letterhead of the service provider.
    • List the authorized consultant’s name (or consultant’s company name).
    • Indicate that the consultant is authorized to have access as a user in NAS and can act on the service provider’s behalf for submission of numbering requests.
    • List all OCNs for which the letter applies.
    • Have the authorized representative of the service provider’s contact phone number and email.
    • Be signed by an authorized representative of the service provider. 
    • Must be dated.

The LOA should be emailed to

18. Does the "AOCN Contact" on the Service Provider and Service Provider Consultant registration have to be a registered NAS user?


19. What do I do if my email address changes after registering in NAS?

You can update your email address on your registration. Log into NAS, select "User Profile" from the NAS Tool menu and then click on "Edit User Profile." You can then modify your email address. A change in email address will require Login Administrator review and approval per the security requirements of NAS.

20. What if I make a mistake or need to update my registration profile after submission to NANPA?

NAS registered users are able to update their user registration profile. After receiving your User ID and password, simply log into NAS, select "User Profile" and then "Edit User Profile." You can then update the information in your profile.

21. What changes in a Service Provider or Service Provider Consultant user profile require Login Administrator approval?

For service providers and their consultants, updates that require Login Administrator approval include: OCN changes, User email address changes, Authorizer's Name changes, updates to the selected Resources (e.g., CO Code, NRUF, Other Resources, NANP Notification System (NNS), and Reclamation), and updates to ACNA.

22. What changes in the US Federal Regulatory and US State Regulator user profile require Login Administrator approval?

For US Federal and State Regulators, updates that require Login Administrator approval include: User email address changes, Authorizer's Name changes, and updates to the selected Resources (e.g., NNS and Reports Requests).

23. What changes in the Non-US Service Provider user profile require Login Administrator approval?

For Non-US Service Providers, updates that require Login Administrator approval include: OCN changes, User email address changes, Authorizer's Name changes, updates to the selected Resources (e.g., Other Resources and NNS), and updates to ACNA.

24. What changes in the Other user profile require Login Administrator approval?

For Non-US Service Providers and Others, updates that require Login Administrator approval include: User email address changes and updates to the selected Resources (e.g., Other Resources and NNS).

25. Will I be able to change my NAS user type if I am already registered in NAS as a different user type?

Yes, but you will first need to contact the NANPA Customer Service Desk at 1-866-623-2282 or via email at, to request deactivating your existing NAS user account.

26. Can I change my NAS User Login?

Yes, but you must first contact the NAS Help Desk at 1-866-623-2282 to request your NAS User Login change.

27. Can more than one person share a NAS User id and password?

No, user ids and passwords cannot be shared per the FCC security requirements. If the login administrator has determined that you are sharing your user id and password the user id will be immediately disabled.


Central Office Code Administration

27. When can I use NAS to submit my CO code applications?

NAS is available 24x7x365 except during announced maintenance activities.

28. What should I see on the tool menu if I am using NAS to submit CO code applications?

The NAS tool menu will display "Part 1/MTE" and allow you to submit a new Part 1 application, update a suspended application or submit an application to reserve a code, return a code or change information associated with a code currently assigned to you. You will also have the capability to search for your submitted forms as well as review a number of CO code reports pertaining to your applications.

29. Can I enter negative numbers on the MTE?

Yes. You can enter negative numbers, positive numbers and zero.

30. Will NAS automatically calculate the percent utilization on the MTE form?

No. The applicant must enter this information. NAS will calculate the Average Month Forecast and Months to Exhaust information on the form by clicking on the "Calculate" button.

31. Will NAS allow me to submit my application even though it does not meet the MTE and utilization requirements for a growth code?

Yes. It is understood that there will be instances whereby the service provider will need to submit an application that does not meet these requirements (e.g., a safety valve request).

32. How do I provide documentation necessary in support of an initial code application?

You have the option to fax or email the appropriate documentation that support an initial application.

33. Can I save an application in NAS and submit it at a later time?

No. However, NAS has included various features such as pre-populating certain fields on the Part 1 form in order to minimize the amount time necessary to complete and submit a Part 1 application.

34. Will NAS remind me that I have a Part 4 due?

Yes. NAS will send a notification via email one month prior to the end of the 6-month time frame when the code has to be placed in service. NAS will also send an email to the service provider when a Part 4 can no longer be accepted by NANPA. The Part 4 must then be sent directly to the appropriate regulatory authority.

35. What is the difference between the "View" and "Search" capability for CO codes?

View forms allow you to search for a single record. Search CO Code forms allows searches for multiple records.

36. Was the code information contained in systems used prior to NAS transferred to NAS?


37. Can I still submit a CO code application via fax or US mail?

Yes. However, there will be a charge associated with NANPA inputting your application in NAS. Please see "Services" and "NANPA Enterprise Services" on this website for more details.

38. Are NAS and the Pooling Administration System (PAS) the same system? If not, are they connected to each other?

No. The FCC requires that the NANP Administration System and the Pooling Administration System be separate, stand-alone systems. However, an interface connected the systems in 2008.

Other NANP Resources

39. What should I see on the tool menu if I am using NAS to submit applications for other NANP resources?

The NAS tool menu will display "Request for Resources." By clicking on the (+) sign, you will be allowed to submit applications for Carrier Identification Codes (CICs) and request codes from the 900 NPA codes and line numbers from the 800-855 resource. For 5XX NPA resources, select "5XX NPA Resource" from the NAS tool menu.

40. How will I know my application was submitted successfully?

You will receive a tracking number from NAS.

41. Can I still submit an application for other NANP resources via fax or US mail?

Yes. However, there will be a charge associated with NANPA inputting your application in NAS. Please see "Services" and "NANPA Enterprise Services" on this website for more details.

42. Will NAS allow me to submit applications for Vertical Service Codes or ANI information digits?

No. Industry guidelines do not contain an application form for these resources, and dialogue with the applicant is usually required. Requests for VSCs and ANI II digits are typically made in writing to NANPA, and ANI II digit requests are referred to the Industry Numbering Committee for review and approval.

NANP Notification System (NNS)

43. Do all service providers have to be registered to receive NPA relief planning notices?

Yes, pursuant to the INC NPA relief planning guidelines, service providers should provide NANPA a contact for notification of NPA relief planning activities. These contacts must maintain an active NAS log-in and password to ensure notification of, and full participation in, any NPA relief planning activities in which they are assigned numbering resources in the affected NPA(s). Please ensure your profile reflects you will receive NPA relief planning notices.

44. Where would I find the NPA relief planning documents in NAS?

Assuming you are authorized to access these documents, once you log into NAS, they are found under "View Documents” and category “NPA Relief Planning."

45. What if I have no need to register in NAS but would like to receive NANPA notifications on numbering matters?

There is also an option to simply receive notifications without having to formally register in NAS. Visit NANPA Fast Track on this website and select "Signup to Receive NANPA Notifications." However, these notices do not include notices of relief planning meetings and decisions.


46. Where can I find the NRUF Form 502?

FCC Form 502 for geographic and nongeographic submissions can be found on this website under "NRUF" and "Submission Methods and Resources".

47. Where can I find instructions on how to fill out NRUF Form 502?

The instructions for filling out Form 502 are included in the far right worksheet within the Excel™ workbook and on-line after logging in to NAS.

48. What are the NRUF Form 502 submission methods?

There are five submission methods supported by NAS: on-line, email, secure FTP, compact disk (CD), and US mail.

49. Is there supplemental information to assist the user in filing NRUF Form 502?

Yes. The Geographic Job Aid and Non-Geographic Job Aid documents are both available on this website under "NRUF" and "Submission Methods and Resources".

50. How often do I have to file NRUF Form 502?

All reporting carriers must submit the NRUF Reports to NANPA semi-annually, on or before February 1 for the preceding 6-month reporting period ending on December 31, and on or before August 1 for the preceding 6-month reporting period ending on June 30.

51. Do I have to register in NAS in order to submit the NRUF Form 502?


52. When requesting blocks or codes, is it necessary to have an NRUF on file?


General NANPA Topics

53. When an area code split takes place, some of the prefixes remain with the old area code and some move to the new area code. Where can that information be found?

When a new area code is assigned, NANPA issues a planning letter that provides an overview of how the new code will be used. If the new area code will be used for a split, and if the list of prefixes is available, it will be included. The planning letter typically contains prefix lists, maps, dialing plans, and key dates.

54. Who publishes LATA maps?

LATA maps are available from several vendors. One way to identify possible sources is to search the internet using the key words "LATA maps".

55. What is area code 700 used for?

Area code 700 was assigned in 1983 on the eve of the introduction of long distance competition in the US. The intent was that interexchange carriers could use 700 numbers to implement new services quickly. When a 700 number is dialed, the local exchange carrier processing the call routes it to the presubscribed interexchange carrier, unless the caller has overridden presubscription by dialing 101XXXX before the number. Thus each interexchange carrier has access to all 7.92 million 700 numbers. 700 numbers are different from all other North American Numbering Plan numbers because the destinations are not unique, and, in fact, depend on the network the caller has selected.

56. How does NANPA decide who is entitled to the assignment of a NANP numbering resource; e.g., central office code, carrier identification code?

NANPA follows regulatory directives and assignment guidelines developed by the industry. These guidelines specify who is entitled to an assignment, how to apply, and what obligations the assignee must meet to retain the assignment. The guidelines and applications forms may be found on the Alliance for Telecommunications Industry Solutions (ATIS) website.

57. Where can law enforcement officers get information on the carrier who is assigned a particular telephone number?

Law enforcement officers can get information on the carrier by logging onto the IVR website or contacting the IVR Help Desk at or call 844-511-3537.

58. Is a guide available to assist Interconnected VoIP Service Providers in obtaining numbering resources?

Yes. A guide is available under “Getting Started for Interconnected VoIP Providers” on the NANPA Fast Track.

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