#1

AT&T Services, Inc.

#2

AT&T Services, Inc.

#3

Data Transmission Network Corporation

#4

Data Transmission Network Corporation

#5

Data Transmission Network Corporation

#6

Data Transmission Network Corporation

#7

Data Transmission Network Corporation

#8

Data Transmission Network Corporation

#9

Data Transmission Network Corporation

#10

Data Transmission Network Corporation

#11

Data Transmission Network Corporation

#12

Data Transmission Network Corporation

#13

Data Transmission Network Corporation

#14

Data Transmission Network Corporation

#15

Level 3 Parent, LLC

#16

Data Transmission Network Corporation

#17

Data Transmission Network Corporation

#18

Data Transmission Network Corporation

#19

Data Transmission Network Corporation

#20

Data Transmission Network Corporation

#21

Data Transmission Network Corporation

#22

Data Transmission Network Corporation

#23

Data Transmission Network Corporation

#24

Data Transmission Network Corporation

#25

Data Transmission Network Corporation

#26

Data Transmission Network, Inc