Emergency Notifications (ENs)

Emergency Notifications report last minute changes that are not included in the current month’s products. Emergency Notifications are published at least once a week.

Emergency Notifications are useful for:

  • Engineers responsible for call routing and switch translations
  • Network planners/architects to prepare for coming changes
  • Call rating and billing operations staff
  • Recipients of the LERG and/or TPM that need to be aware of last minute NXX announcements (new code openings)

Emergency Notifications report new NXXs that are effective in less than 45 days from the date they are entered into the underlying TRA database by the service provider or its agent. Industry lead time for an NXX opening is a minimum of 45 days from the data entry date; however, exceptions, for various reasons, may sometimes be necessary. Emergency Notifications may also provide information of general interest such as reported blocked calls, short notice homing changes, and rate center changes. High-level information regarding Area Code Splits (dates and test numbers) are provided and summarized once a month.

Produced:  Each Tuesday and as may be needed otherwise

Distribution Frequency:  Each Tuesday and as may be needed otherwise

Distribution Format(s):  email

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