Problemas al conectar con GitHub

Te lo paso (por fibra):

traceroute to github.com (140.82.121.4), 64 hops max, 52 byte packets
 1  192.168.1.1 (192.168.1.1)  4.874 ms  5.695 ms  6.794 ms
 2  231.red-81-46-38.customer.static.ccgg.telefonica.net (81.46.38.231)  8.971 ms  8.113 ms  7.345 ms
 3  101.red-81-46-45.customer.static.ccgg.telefonica.net (81.46.45.101)  12.474 ms  7.991 ms  8.145 ms
 4  241.red-81-46-45.customer.static.ccgg.telefonica.net (81.46.45.241)  8.489 ms  8.021 ms  7.905 ms
 5  46.red-80-58-81.staticip.rima-tde.net (80.58.81.46)  8.392 ms  8.056 ms  7.385 ms
 6  81.red-81-46-0.customer.static.ccgg.telefonica.net (81.46.0.81)  8.320 ms  7.866 ms  8.479 ms
 7  176.52.248.189 (176.52.248.189)  14.837 ms  14.254 ms  15.077 ms
 8  5.53.6.76 (5.53.6.76)  14.930 ms  14.956 ms  15.899 ms
 9  94.142.107.207 (94.142.107.207)  43.303 ms
    prs-bb2-link.ip.twelve99.net (80.91.248.130)  42.629 ms
    prs-bb1-link.ip.twelve99.net (213.155.131.152)  55.730 ms
10  prs-bb2-link.ip.twelve99.net (80.91.248.130)  38.983 ms
    ffm-bb1-link.ip.twelve99.net (62.115.123.12)  52.929 ms
    ffm-bb2-link.ip.twelve99.net (62.115.122.139)  42.949 ms
11  * * *
12  * * *
13  github-ic350972-ffm-b11.ip.twelve99-cust.net (62.115.182.171)  58.886 ms  50.019 ms *
14  * * *
15  * * *
16  * * *
17  * * *
18  * * *
19  * * *
20  * * *
21  * * *
22  * * *
23  * * *
24  * * *
25  *^C

Por 4G/5G:

traceroute to github.com (140.82.121.3), 64 hops max, 52 byte packets
 1  172.20.10.1 (172.20.10.1)  4.287 ms  2.763 ms  6.340 ms
 2  * * *
 3  10.243.242.97 (10.243.242.97)  214.540 ms  154.651 ms  36.847 ms
 4  * * *
 5  172.30.84.241 (172.30.84.241)  30.419 ms  43.182 ms
    172.30.84.240 (172.30.84.240)  76.006 ms
 6  * * *
 7  * 10.red-80-58-106.staticip.rima-tde.net (80.58.106.10)  20.102 ms *
 8  204.red-80-58-77.staticip.rima-tde.net (80.58.77.204)  60.262 ms * *
 9  81.red-81-46-0.customer.static.ccgg.telefonica.net (81.46.0.81)  49.494 ms *  33.903 ms
10  176.52.248.189 (176.52.248.189)  38.409 ms * *
11  94.142.107.207 (94.142.107.207)  70.690 ms
    5.53.6.76 (5.53.6.76)  38.554 ms
    9.red-80-58-106.staticip.rima-tde.net (80.58.106.9)  29.531 ms
12  94.142.107.207 (94.142.107.207)  37.906 ms
    50.red-81-46-0.customer.static.ccgg.telefonica.net (81.46.0.50)  38.384 ms
    81.red-81-46-0.customer.static.ccgg.telefonica.net (81.46.0.81)  20.838 ms
13  prs-bb1-link.ip.twelve99.net (213.155.131.152)  54.441 ms
    5.53.6.76 (5.53.6.76)  50.126 ms
    prs-bb1-link.ip.twelve99.net (213.155.131.152)  57.346 ms
14  * 94.142.107.207 (94.142.107.207)  58.199 ms
    ffm-bb2-link.ip.twelve99.net (62.115.122.139)  81.190 ms
15  prs-bb1-link.ip.twelve99.net (213.155.131.152)  72.546 ms
    prs-bb2-link.ip.twelve99.net (80.91.248.130)  70.237 ms
    github-ic350972-ffm-b11.ip.twelve99-cust.net (62.115.182.171)  82.815 ms
16  github-ic350972-ffm-b11.ip.twelve99-cust.net (62.115.182.171)  85.335 ms
    ffm-bb2-link.ip.twelve99.net (62.115.114.99)  59.987 ms
    ffm-bb2-link.ip.twelve99.net (62.115.122.139)  102.967 ms
17  * ffm-bb1-link.ip.twelve99.net (62.115.123.12)  77.788 ms *
18  * ffm-b11-link.ip.twelve99.net (62.115.124.119)  57.238 ms *
19  * * *
20  * * *
21  * * *
22  * * *
23  * * *
24  * * *
25  * * *
26  * * *
27  * * *
28  * * *
29  * * *
30  * * *
31  *^C

Pero vamos, que cuando conecta una vez ya durante un rato funciona de seguido.... hasta que vuelve a fallar.

Sobre lo de funcionar en otras zonas, ahora mismo no te se decir. Pero probaré.