Sec. 51.223  Application of additional requirements.

    (a) A state may not impose the obligations set forth in section 
251(c) of the Act on a LEC that is not classified as an incumbent LEC as 
defined in section 251(h)(1) of the Act, unless the Commission issues an 
order declaring that such LECs or classes or categories of LECs should 
be treated as incumbent LECs.
    (b) A state commission, or any other interested party, may request 
that the Commission issue an order declaring that a particular LEC be 
treated as an incumbent LEC, or that a class or category of LECs be 
treated as incumbent LECs, pursuant to section 251(h)(2) of the Act.

 Subpart D--Additional Obligations of Incumbent Local Exchange Carriers