| EXCHANGE |
CARRIER |
| 339-204 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 339-219 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 339-230 |
XO MASSACHUSETTS, INC. |
| 339-309 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 339-555 |
VERIZON NEW ENGLAND INC. |
| 339-814 |
VERIZON NEW ENGLAND INC. |
| 339-931 |
|
| 339-970 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 339-204 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 339-219 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 339-230 |
XO MASSACHUSETTS, INC. |
| 339-309 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 339-555 |
VERIZON NEW ENGLAND INC. |
| 339-814 |
VERIZON NEW ENGLAND INC. |
| 339-931 |
|
| 339-970 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 351-931 |
|
| 351-931 |
|
| 413-396 |
|
| 413-396 |
|
| 508-203 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-210 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-214 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-219 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-232 |
AT&T LOCAL |
| 508-260 |
|
| 508-275 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-283 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-306 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-313 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-318 |
XO MASSACHUSETTS, INC. |
| 508-329 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-332 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-338 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-340 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-369 |
OMNIPOINT COMMUNICATIONS MB OPERATIONS, LLC |
| 508-377 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-401 |
XO MASSACHUSETTS, INC. |
| 508-403 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-406 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-413 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-434 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-443 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-458 |
XO MASSACHUSETTS, INC. |
| 508-463 |
XO MASSACHUSETTS, INC. |
| 508-500 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-536 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-558 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-570 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-576 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-589 |
XO MASSACHUSETTS, INC. |
| 508-593 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-597 |
XO MASSACHUSETTS, INC. |
| 508-603 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-613 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-618 |
XO MASSACHUSETTS, INC. |
| 508-619 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-630 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-635 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-637 |
XO MASSACHUSETTS, INC. |
| 508-663 |
XO MASSACHUSETTS, INC. |
| 508-682 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-686 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-691 |
XO MASSACHUSETTS, INC. |
| 508-709 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-714 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-715 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-718 |
XO MASSACHUSETTS, INC. |
| 508-734 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-738 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-803 |
XO MASSACHUSETTS, INC. |
| 508-812 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-859 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-861 |
MCI WORLDCOM COMMUNICATIONS, INC. - MA |
| 508-915 |
LEVEL 3 COMMUNICATIONS, LLC - MA |
| 508-921 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-931 |
|
| 508-936 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-969 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-973 |
GEOTEK COMMUNICATIONS, INC. |
| 508-975 |
FOCAL COMMUNICATIONS CORP OF MASSACHUSETTS |
| 508-983 |
XO MASSACHUSETTS, INC. |
