http://www.dslreports.com/forum/remark,26841639 Is at&t for real?

printf "%02x%02x:%02x%02x\n" 76 220 xx xx ; printf "%02x%02x:%02x%02x\n" 99 124 xxx xxx
4cdc:20yy
637c:YYYY

# traceroute6 2602:304:cdc2:0yy0::1 ; traceroute6 2602:306:37cY:YYY0::1
traceroute6 to 2602:304:cdc2:0yy0::1 (2602:304:cdc2:yy0::1) from Z, 16 hops max, 12 byte packets
Skipping 2 intermediate hops
 3  xe012-438.RT.MR.MSK.RU.retn.net  1.320 ms  1.191 ms  1.248 ms
 4  RT.TLX.NYC.US.retn.net  124.866 ms  124.400 ms  125.080 ms
 5  as7018-att.10gigabitethernet2-3.core1.nyc4.he.net  137.598 ms  179.680 ms  150.144 ms
 6  * * *
 7  * * *
 8  2001:1890:ff:ffff:12:122:99:125  139.270 ms  138.714 ms  138.885 ms
 9  2602:300:c533:1510::4  138.903 ms  138.695 ms  138.780 ms
10  2602:300:c533:1510::5  189.738 ms  189.757 ms  190.096 ms
11  * * *
12  * * *
13  * * *
14  2602:300:c533:1510::5  190.810 ms  190.647 ms  190.884 ms
traceroute6 to 2602:306:37cY:YYY0::1 (2602:306:37cY:YYY0::1) from Z, 16 hops max, 12 byte packets
Skipping 2 intermediate hops
 3  xe012-438.RT.MR.MSK.RU.retn.net  1.245 ms  1.090 ms  1.112 ms
 4  RT.TLX.NYC.US.retn.net  124.698 ms  124.320 ms  124.783 ms
 5  as7018-att.10gigabitethernet2-3.core1.nyc4.he.net  137.132 ms  137.704 ms  138.025 ms
 6  * * *
 7  * * *
 8  2001:1890:ff:ffff:12:122:99:125  139.692 ms  140.326 ms  139.774 ms
 9  2602:300:c533:1510::4  138.898 ms  139.584 ms  145.563 ms
10  2602:300:c533:1510::5  189.704 ms  190.298 ms  190.905 ms
11  * * *
12  2602:300:c533:1510::5  194.267 ms  192.703 ms  191.208 ms
13  * * *
14  * * *
15  2602:300:c533:1510::5  191.379 ms *  190.522 ms
16  * * *

# traceroute6 2602:304:cdc2:0yy0::1 ; traceroute6 2602:306:37cY:YYY0::1
traceroute to 2602:304:cdc2:0yy0::1 (2602:304:cdc2:yy0::1), 16 hops max, 80 byte packets
 2  10gigabitethernet2-3.core1.fmt1.he.net (2001:470:1:1db::1)  8.677 ms  8.680 ms  8.721 ms
 3  gige-g4-8.core1.fmt2.he.net (2001:470:0:2d::2)  0.376 ms  0.427 ms  0.416 ms
 4  10gigabitethernet6-4.core1.lax1.he.net (2001:470:0:18d::2)  8.487 ms  8.496 ms  8.669 ms
 5  10gigabitethernet1-3.core1.lax2.he.net (2001:470:0:72::2)  12.416 ms  12.880 ms  13.510 ms
 6  att-internet4-as7018.10gigabitethernet5-2.core1.lax2.he.net (2001:470:0:1e6::2)  9.267 ms  9.335 ms  9.417 ms
 7  * * *
 8  * * *
 9  2001:1890:ff:ffff:12:122:114:41 (2001:1890:ff:ffff:12:122:114:41)  21.074 ms  21.109 ms  21.086 ms
10  2602:300:c533:1510::5 (2602:300:c533:1510::5)  20.761 ms  20.756 ms  20.812 ms
11  2602:300:c533:1510::5 (2602:300:c533:1510::5)  22.213 ms  21.943 ms  22.371 ms
traceroute to 2602:306:37cY:YYY0::1 (2602:306:37cY:YYY0::1), 16 hops max, 80 byte packets
 2  10gigabitethernet2-3.core1.fmt1.he.net (2001:470:1:1db::1)  0.536 ms  0.499 ms  0.443 ms
 3  gige-g4-8.core1.fmt2.he.net (2001:470:0:2d::2)  4.335 ms  4.997 ms  4.995 ms
 4  10gigabitethernet6-4.core1.lax1.he.net (2001:470:0:18d::2)  8.663 ms  8.649 ms  8.635 ms
 5  10gigabitethernet1-3.core1.lax2.he.net (2001:470:0:72::2)  9.270 ms  9.617 ms  9.201 ms
 6  att-internet4-as7018.10gigabitethernet5-2.core1.lax2.he.net (2001:470:0:1e6::2)  9.574 ms  9.549 ms  9.511 ms
 7  * * *
 8  * * *
 9  2001:1890:ff:ffff:12:122:114:41 (2001:1890:ff:ffff:12:122:114:41)  21.208 ms  21.135 ms  21.165 ms
10  2602:300:c533:1510::5 (2602:300:c533:1510::5)  20.762 ms  20.773 ms  20.798 ms
11  * * *
12  * * *
13  * * *
14  * * *
15  2602:300:c533:1510::5 (2602:300:c533:1510::5)  22.326 ms  23.112 ms  22.765 ms
16  * * *