1.1.1.1 not reachable by Tiscali in Rome, Italy. 1.0.0.1 works


#1

Hi there
Here in Roma, since this afternoon, it is impossible to reach the 1.1.1.1 DNS, but 1.0.0.1 works flawlessly.
I’m not the only one experiencing this issue, also a friend of mine in another area of the city.

Here you can see my results:

Traccia instradamento verso 1dot1dot1dot1.cloudflare-dns.com [1.1.1.1]
su un massimo di 30 punti di passaggio:

  1    <1 ms    <1 ms    <1 ms  TGMEDIAACCESS [192.168.1.1]
  2    79 ms    95 ms    97 ms  static-213-205-52-134.clienti.tiscali.it [213.205.52.134]
  3   116 ms    90 ms    87 ms  static-213-205-55-205.clienti.tiscali.it [213.205.55.205]
  4     8 ms     9 ms     8 ms  static-213-205-55-169.clienti.tiscali.it [213.205.55.169]
  5    98 ms   100 ms    96 ms  static-213-205-55-125.clienti.tiscali.it [213.205.55.125]
  6   196 ms   152 ms    83 ms  static-94-32-126-29.clienti.tiscali.it [94.32.126.29]
  7    10 ms    13 ms    11 ms  static-94-32-126-18.clienti.tiscali.it [94.32.126.18]
  8    38 ms    48 ms    26 ms  1dot1dot1dot1.cloudflare-dns.com [1.1.1.1]

Traccia instradamento verso 1dot1dot1dot1.cloudflare-dns.com [1.0.0.1]
su un massimo di 30 punti di passaggio:

  1    <1 ms    <1 ms    <1 ms  TGMEDIAACCESS [192.168.1.1]
  2    77 ms    80 ms    82 ms  static-213-205-52-134.clienti.tiscali.it [213.205.52.134]
  3   201 ms   178 ms    87 ms  static-213-205-55-197.clienti.tiscali.it [213.205.55.197]
  4     9 ms    11 ms     8 ms  static-213-205-55-165.clienti.tiscali.it [213.205.55.165]
  5   114 ms   115 ms   103 ms  static-213-205-55-125.clienti.tiscali.it [213.205.55.125]
  6   141 ms   136 ms   124 ms  static-94-32-126-29.clienti.tiscali.it [94.32.126.29]
  7    64 ms    67 ms    75 ms  static-94-32-126-18.clienti.tiscali.it [94.32.126.18]
  8     9 ms    10 ms     9 ms  cloudflare-nap.namex.it [193.201.28.33]
  9    81 ms    94 ms    97 ms  1dot1dot1dot1.cloudflare-dns.com [1.0.0.1]

C:\Users\andre>nslookup -class=chaos -type=txt id.server 1.1.1.1
DNS request timed out.
    timeout was 2 seconds.
Server:  UnKnown
Address:  1.1.1.1

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Tempo scaduto per la richiesta a UnKnown

C:\Users\andre>nslookup -class=chaos -type=txt id.server 1.0.0.1
Server:  1dot1dot1dot1.cloudflare-dns.com
Address:  1.0.0.1

Risposta da un server non autorevole:
id.server       text =

        "fco01"

C:\Users\andre>nslookup -vc -class=chaos -type=txt id.server 1.1.1.1
Server:  UnKnown
Address:  1.1.1.1

*** UnKnown non è in grado di trovare id.server: Unspecified error

C:\Users\andre>nslookup -vc -class=chaos -type=txt id.server 1.0.0.1
Server:  1dot1dot1dot1.cloudflare-dns.com
Address:  1.0.0.1

Risposta da un server non autorevole:
id.server       text =

        "fco01"

@matteo
Thank you very much


#2

It seems to be a problem with routing towards 1.1.1.1, it fails at the last hop.

I will take a look as soon as I can and check from my connection in Turin.

Maybe @ryan or @cscharff can take a look on the meantime!


#3

Also I have the same problem. Rome but with Vodafone as a provider. This morning (26th of July) it was working and unlike what Andrea experienced it was working also yesterday.


#4

Would you mind opening https://cloudflare-dns.com/help/ as well as doing the ping, traceroutes and digs @andreagdipaolo did?


#5

Her you are Matteo:

Connection Information

[email protected]:~# traceroute 1.1.1.1
traceroute to 1.1.1.1 (1.1.1.1), 30 hops max, 60 byte packets
1 gateway.casa.lan (192.168.10.1) 0.458 ms 0.477 ms 0.454 ms
2 192.168.1.1 (192.168.1.1) 2.903 ms 3.551 ms 3.447 ms
3 net-37-119-78-1.cust.vodafonedsl.it (37.119.78.1) 12.936 ms 12.873 ms 12.736 ms
4 * * *
5 188.152.249.38 (188.152.249.38) 118.749 ms 118.490 ms 118.458 ms
6 * * *
7 * * *
8 * * *
9 * * *
10 * * *
11 * * *
12 * * *
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
19 * * *
20 * * *
21 * * *
22 * * *
23 * * *
24 * * *
25 * * *
26 * * *
27 * * *
28 * * *
29 * * *
30 * * *
[email protected]:~# traceroute 1.0.0.1
traceroute to 1.0.0.1 (1.0.0.1), 30 hops max, 60 byte packets
1 gateway.casa.lan (192.168.10.1) 0.426 ms 0.421 ms 0.498 ms
2 192.168.1.1 (192.168.1.1) 3.076 ms 2.955 ms 2.835 ms
3 net-37-119-78-1.cust.vodafonedsl.it (37.119.78.1) 8.033 ms 9.734 ms 9.603 ms
4 83.224.40.134 (83.224.40.134) 12.089 ms 12.002 ms 11.855 ms
5 83.224.40.133 (83.224.40.133) 11.703 ms 11.544 ms 11.381 ms
6 cloudflare-nap.namex.it (193.201.28.33) 11.180 ms 6.762 ms 7.089 ms
7 1dot1dot1dot1.cloudflare-dns.com (1.0.0.1) 7.033 ms 6.937 ms 7.930 ms

[email protected]:~# nslookup -class=chaos -type=txt id.server 1.1.1.1
;; connection timed out; no servers could be reached

[email protected]:~# nslookup -class=chaos -type=txt id.server 1.0.0.1
Server: 1.0.0.1
Address: 1.0.0.1#53

Non-authoritative answer:
id.server text = “fco01”

Authoritative answers can be found from:

[email protected]:~# nslookup -vc -class=chaos -type=txt id.server 1.1.1.1
;; connection timed out; no servers could be reached

[email protected]:~# nslookup -vc -class=chaos -type=txt id.server 1.0.0.1
Server: 1.0.0.1
Address: 1.0.0.1#53

Non-authoritative answer:
id.server text = “fco01”

Authoritative answers can be found from: