It should be noted that the bulk of these facilities are no longer in service. Much of the original lightguide network has been twice upgraded over the last seven years. In 1995 the NGLN (Next Generation Lightguide Network) project was undertaken to reduce the number of regenerators and converge many of the routes into a simplier layout. Around four years later AT&T entered into a partnership with three companies (PF.net, TouchAmerica and Cap Rock Communications) to build yet another next generation backbone.
This layout is a work in progress and is subject to change as new routes, information or observations become available.
| Route | Segment | Map | Comment(s) |
|---|---|---|---|
| Newark, NJ - Atlanta, GA | N | Joint NextGen fiber-optic backbone w/PF.net | |
| Philadelphia, PA -Arlington, VA | N | Link #38 | |
| Arlington, VA - Greensboro, NC | N | Link #1 | |
| Greensboro, NC - Atlanta, GA | N | Link #37 | |
| Camden, NJ - Dranesville, VA | N | ||
| Salisbury, MD - Dover, DE | N | Fiber-Optic spur route | |
| Washington, D.C. - St. Louis, MO | N | Fiber-Optic inter-switch route | |
| Washington, D.C. #1 - Frederick Co., MD | N | ||
| Cambridge, MA - Washington, D.C. | N | AT&T's first fiber-optic route circa 1983 | |
| Philadelphia, PA - Wilmington, DE | N | ||
| Wilmington, DE - Baltimore #2 | N | ||
| Wilmington, DE - Baltimore # 2 | Wilmington, DE - Baltimore #2 | N | K carrier |
| Upper Strasburg, PA - Lynchburg | Winchester #1 - Lynchburg | N | ''USL'' cable (Voice & N carrier) |
| Winchester #1 - Warrenton #2 | N | K or N carrier, see LaFrance | |
| Washington #1 - Richmond #1? | N | ||
| Faulkner, MD - Richmond 1 | N | New fiber route | |
| Faulkner, MD - Richmond 1 | N | Old fiber route, reuses Washington - Richmond C coaxial cable ROW | |
| Faulkner, MD - Richmond 1 | N | Washington - Richmond C cable | |
| Washington #3 - Dillwyn | N | ||
| Washington #3 - Independent Hill | N | Switch to POP spur route | |
| Washington #3 - Nokesville | N | Spur route (dunno why) | |
| Washington #3 - Culpeper | N | Switch to POP spur route | |
| Washington #3 - Charlottesville 2 | N | Switch to Tropposcatter spur route! | |
| Washington #3 - Charlottesville 1 | N | Switch to POP spur route | |
| Charlottesville 1 - Dillwyn | N | POP to POP route | |
| Washington - Richmond | N | ||
| Washington - Richmond A & B | N | A & B: Voice, K then N carrier | |
| Washington - Richmond C | N | Cable route #149, C: L1 then L3 coax | |
| Richmond - Greensboro, NC | N | ||
| Richmond - Greensboro A & B | N | A & B: Voice, K carrier | |
| Richmond - Greensboro C | N | Cable route #121, C: L1 then L3 coax | |
| Richmond - Lynchburg - Roanoke | N | Richmond - Lynchburg - Roanoke A & B cable (K carrier) | |
| Richmond - Lynchburg | N | ||
| Richmond #2 - Roanoke | N | Fiber-Optic version of RLR A/B K carrier cable | |
| Richmond #2 - Moseley | N | ||
| Moseley - Dillwyn | N | ||
| Dillwyn - Lynchburg | N | Route runs infront of Buckingham troposcatter | |
| Lynchburg - Roanoke | N | ||
| Roanoke - Blacksburg | N | post '84 spur POP-Access POP/switch route? | |
| Lynchburg - Gibsonville, NC | N | ||
| Lynchburg - Blairs | N | POP to POP route | |
| Blairs - Gibsonville, NC | N | ||
| Dranesville Routes: | N | L carrier, now fiber | |
| Dranesville - Leesburg | N | ||
| Dranesville - Arlington #2 | N | Cable route #1, L3/4 coax now fiber | |
| Dranesville - Faulkner A | N | Cable route #60, L3/4 coax now fiber | |
| Moseley Routes: | N | mixed coax/fiber | |
| Moseley - Dranesville | N | Cable route #33A, L4 coax | |
| Moseley - Gibsonville A | N | Cable route #114 | |
| Moseley - Greensboro, NC | N | ||
| Moseley - Norfolk A | N | Cable route #119, L4 upgraded to Phillips fiber-optics | |
| Richmond #1 Routes: | N | mixed transmission media | |
| Richmond #1 - Newport News | N | N carrier | |
| Richmond #1 - Norfolk | N | K carrier | |
| Richmond #1 - Norfolk #1 | N | Fiber-Optic POP to switch route along CSX trackage w/Sprint | |
| Richmond #1 - Richmond #2 | N | ||
| Richmond #2 - Arlington #2? | N | Unknown Lightguide route, Help! Please! |