Search by area code/prefix (NPA/NXX) or OCN

• NPA: NXX:
• OCN:
• Effective date within the past days or the next days

• At least one field is required; all others are optional.
• Please note that the NPA-NXX effective date fields are valid only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
• If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.