ICONN provides information on the CenturyLink QC-affiliate local network. For information other than regarding the CenturyLink QC-affiliate local network, please see Telcordia's Local Exchange Routing Guide (LERG) or the NANPA/NeuStar web sites (http://www.nanpa.com/ and/or (http://www.nationalpooling.com/). The LERG should be used for industry inquiries and for routing purposes. Nationwide NPA-NXX activity data for all carriers, including changes in NPA-NXXs assigned to CenturyLink, may be seen at the North American Numbering Plan Administration and Telcordia Routing Administration..
Loop Data
Lists the wire centers for a particular state along with
the number of loops (total, in service, and available),
and the number of loops with Digital Loop Carrier (DLC)
or Pair Gain. Updated monthly.
Universal Digital Carrier
WARNING! This information may only be used to determine
if a customer has UDC on their telephone line that can
be removed. You may not use this information to contact
customers or prospective customers, or for any other purpose
other than UDC determination. Updated Monthly. Contains
Wire Center and Phone Number data.
Cross Boxes with Potential Power Disparity
Provides a list of cross-boxes with a potential for power disparity, aka as spectral interference. This list identifies the cross-boxes where CenturyLink has installed Digital Subscriber Line Access Multiplexer ("DSLAM") facilities as Remote Terminals in close proximity. Updated monthly.
