McLeodusa S-4/A Registration of securities issued in business combination transactions (amended)

Exhibit 3.21

State of North Carolina

Department of the Secretary of State

ARTICLES OF ORGANIZATION

INCLUDING ARTICLES OF CONVERSION

Pursuant to §§ 57C-2-21, 57C-9A-01 and 57C-9A-03 of the General Statutes of North Carolina, the undersigned converting business entity does hereby submit these Articles of Organization Including Articles of Conversion for the purpose of forming a limited liability company.

1. The name of the limited liability company is:     US LEC of North Carolina LLC

  The limited liability company is being formed pursuant to a conversion of another business entity.

2. The name of the converting business entity is:     US LEC of North Carolina Inc.

  and the organization and internal affairs of the converting business entity are governed by the laws of

	the state or country of	North Carolina
	A plan of conversion has been approved by the converting business entity as required by law.
3.	The converting business entity is a (check one):þ domestic corporation;¨ foreign corporation;¨ foreign limited liability company;¨ domestic limited partnership;
	¨ foreign limited partnership; or ;¨ domestic registered limited liability partnership;
	¨ foreign limited liability partnership; or¨ other partnership as defined in G.S. 59-36, whether or not formed under laws of North Carolina.

4.	If the limited liability company is to dissolve by a specific date, the latest date on which the limited liability company is to dissolve:(If no date for dissolution is specified, there shall be no limit on theduration of the limited liability company.)
	N/A

5.	The name and address of each person executing these articles of organization is as follows: (Statewhether each person is executing these articles of organization in the capacity of a member, organizeror both).
	Barney Stewart, Bryan Cave LLP, 301 S. College Street, Suite 3700, Charlotte, North Carolina 28202. Executing as organizer.
6.	The street address and the county of the initial registered office of the limited liability company is:
	Number and Street	150 Fayetteville Street

	City, State, Zip Code	Raleigh, North Carolina 27601	County	Wake
7.	The mailing address,if different from the street address, of the initial registered office is:
	Box 1011, Raleigh, North Carolina 27601

8. The name of the initial registered agent is:     CT Corporation System

9.	Principal office information: (Select either a or b.)
	a.        þ The limited liability company has a principal office.
	•        The street address and county of the principal office of the limited liability company is:

Number and Street	600 Willowbrook Office Park
City, State, Zip Code	Fairport, New York 14450	County	Monroe

         •        The mailing address,if different from the street address, of the principal office of the limited liability company is:

      b.        ¨ The limited liability company does not have a principal office.

10.	Check one of the following:
	þ (i)Member-managed LLC: all members by virtue of their status as members shall be managers of this limited liability company.
	¨ (ii)Manager-managed LLC: except as provided by N.C.G.S. Section 57C-3-20(a), the members of this limited liability company shall not be managers by virtue of their status as members.

11.	Any other provisions which the limited liability company elects to include are attached.
12.	These articles will be effective upon filing, unless a date and/or time is specified:
	12:03 a.m., March 1, 2010

This is the 25^th day of February, 2010 .

    US LEC of North Carolina Inc.

    /s/ Barney Stewart III

Signature

    Barney Stewart III, Organizer

Type or Print Name and Title