Cannot connect to specific domain

[#1]

Hmm.... I've had my IP address for so long I really don't want to lose it (:
I guess I'll justg keep using VPNs when I want to check whether or not I'm a millionaire

[#2]

Quote from: Matthew

Interesting I haven't seen that happen before but glad to hear it's been sorted.

Matt, Ive got the same issue.   Tried everything, DNS, swapping routers, even MTU which makes no difference.
Exactly the same as kdhuk in that I can access the subdomains, but not the vodafone main site.    All worked ok until I attempted to log in to my account (https) which is why at first I thought it may be MTU and been messing with that too.

[#3]

A TCP trace over port 80 would be interesting to see? Also keen to know what gateway people are on, and if disconnecting/reconnecting makes any difference?

[#4]

Here you go bob.    I have swapped routers this morning and had a gateway change

C:\Users\kitz>tracert www.vodafone.co.uk
Tracing route to www.vodafoneaws.co.uk [85.205.252.161]
over a maximum of 30 hops:
  1    <1 ms    <1 ms    <1 ms  ARCHER_VR900 [192.168.1.1]
  2    13 ms    13 ms    13 ms  lo0.11.central11.ptw-bng01.plus.net [195.166.128
.171]
  3    13 ms    13 ms    14 ms  irb.11.PTW-CR02.plus.net [84.93.249.18]
  4    13 ms    13 ms    13 ms  ae2.ptw-cr01.plus.net [195.166.129.4]
  5    16 ms    15 ms    15 ms  ldngw1.arcor-ip.net [195.66.224.209]
  6    27 ms    27 ms    27 ms  85.205.1.21
  7    27 ms    27 ms    26 ms  85.205.1.21
  8    28 ms    27 ms    27 ms  47.73.192.146
  9     *        *        *     Request timed out.
 10  ^C
C:\Users\kitz>

Their server has disabled ICMP so not responding to pings...  which is why I set off MTU tweaking just in case.

[#5]

Swapped router again different gateway.  Still unable to connect

C:\Users\kitz>tracert www.vodafone.co.uk
Tracing route to www.vodafoneaws.co.uk [85.205.252.161]
over a maximum of 30 hops:
  1     1 ms    <1 ms    <1 ms  192.168.1.1
  2    11 ms    11 ms    11 ms  lo0.11.central11.pcl-bng02.plus.net [195.166.130
.152]
  3    11 ms    42 ms    12 ms  irb.11.PCL-CR01.plus.net [84.93.249.97]
  4    13 ms    12 ms    13 ms  ae1.ptw-cr01.plus.net [195.166.129.0]
  5    13 ms    15 ms    15 ms  ldngw1.arcor-ip.net [195.66.224.209]
  6    25 ms    25 ms    25 ms  85.205.1.21
  7    25 ms    24 ms    24 ms  85.205.1.21
  8    26 ms    26 ms    26 ms  47.73.192.146
  9     *        *        *     Request timed out.
 10  ^C

[#6]

as a point - I don't know if it is relevant but why the trace go to a different site - see the difference between the tracert command and the result
This is what I get

C:\Users\Jim>tracert www.vodafone.co.uk
Tracing route to www.vodafone.co.uk [85.205.252.161]
over a maximum of 30 hops:
  1    <1 ms    <1 ms    <1 ms  home.gateway.home.gateway [192.168.1.254]
  2    14 ms    14 ms    14 ms  lo0.13.central13.pcl-bng02.plus.net [195.166.130.154]
  3    24 ms    14 ms    14 ms  irb.13.pcl-cr01.plus.net [84.93.249.129]
  4    18 ms    14 ms    14 ms  ae1.ptw-cr01.plus.net [195.166.129.0]
  5    16 ms    18 ms    19 ms  ldngw1.arcor-ip.net [195.66.224.209]
  6    28 ms    29 ms    28 ms  85.205.1.21
  7    28 ms    27 ms    28 ms  85.205.1.21
  8    29 ms    29 ms    28 ms  47.73.192.146
  9     *        *

[#7]

Quote from: kitz

Here you go bob...

Thanks. That's an ICMP trace though. A TCP trace would probably be more useful, e.g:

>tracetcp www.vodafone.co.uk:80
Tracing route to 85.205.252.161 on port 80
Over a maximum of 30 hops.
1       1 ms    0 ms    0 ms    10.3.23.253
2       1 ms    1 ms    1 ms    10.0.3.17
3       3 ms    2 ms    2 ms    84.93.216.88    [vlan380.pbs-cr01.plus.net]
4       3 ms    2 ms    2 ms    84.93.216.95    [gi6-8.ptp-cr01.plus.net]
5       9 ms    9 ms    10 ms   84.93.224.49    [gi1-22.pcl-gw01.plus.net]
6       12 ms   9 ms    9 ms    195.166.129.40  [ae3.pcl-cr01.plus.net]
7       44 ms   8 ms    8 ms    195.166.129.0   [ae1.ptw-cr01.plus.net]
8       13 ms   12 ms   12 ms   195.66.224.209  [ldngw1.arcor-ip.net]
9       25 ms   22 ms   22 ms   85.205.1.21
10      22 ms   22 ms   24 ms   85.205.0.205
11      24 ms   26 ms   22 ms   47.73.192.146
12      *       *       *       Request timed out.
13      *       *       *       Request timed out.
14      *       *       *       Request timed out.
15      *       *       *       Request timed out.
16      *       *       *       Request timed out.
17      Destination Reached in 45 ms. Connection established to 85.205.252.161
Trace Complete.

If there's still no joy, then it's probably a Wireshark jobbie.

[#8]

ty for that bob.
I dont seem to get anything after hop 8

C:\Users\kitz>tracetcp www.vodafone.co.uk:80
Tracing route to 85.205.252.161 on port 80
Over a maximum of 30 hops.
1       2 ms    1 ms    1 ms    192.168.1.1
2       13 ms   12 ms   12 ms   195.166.130.152 [lo0.11.central11.pcl-bng02.plus
.net]
3       13 ms   13 ms   12 ms   84.93.249.97    [irb.11.PCL-CR01.plus.net]
4       13 ms   12 ms   13 ms   195.166.129.6   [ae2.pcl-cr01.plus.net]
5       13 ms   13 ms   13 ms   195.166.129.0   [ae1.ptw-cr01.plus.net]
6       25 ms   26 ms   17 ms   195.66.224.209  [ldngw1.arcor-ip.net]
7       26 ms   26 ms   27 ms   85.205.1.21
8       27 ms   *       *       85.205.1.21
9       *       *       *       Request timed out.
10      *       *       *       Request timed out.

I dont know if its relevant but only one of the three pings to hop 8 will respond, the other 2 will always fail.
oops and as I typed that, just to make me out a liar, slightly different routing occurred

C:\Users\kitz>tracetcp www.vodafone.co.uk:80
Tracing route to 85.205.252.161 on port 80
Over a maximum of 30 hops.
1       1 ms    1 ms    1 ms    192.168.1.1
2       13 ms   12 ms   12 ms   195.166.130.152 [lo0.11.central11.pcl-bng02.plus
.net]
3       14 ms   13 ms   13 ms   84.93.249.97    [irb.11.PCL-CR01.plus.net]
4       16 ms   12 ms   13 ms   195.166.129.2   [ae1.ptw-cr02.plus.net]
5       13 ms   13 ms   14 ms   195.66.224.209  [ldngw1.arcor-ip.net]
6       27 ms   42 ms   26 ms   85.205.0.205
7       27 ms   26 ms   26 ms   85.205.0.205
8       *       26 ms   26 ms   85.205.1.21
9       *       *       *       Request timed out.
10      *       *       *       Request timed out.
11      *       *       *       Request timed out.
12      *       *       *       Request timed out.
13      *       *       *       Request timed out.
14      *       *       *       Request timed out.
15      *       *       *       Request timed out.
16      *       *       *       Request timed out.
17      *       *       *       Request timed out.
18      *       *       *       Request timed out.
19      *       *       *       Request timed out.
20      *       *       *       Request timed out.
21      *       *       *       Request timed out.
22
Terminate Event Occurred.
C:\Users\kitz>tracetcp www.vodafone.co.uk:80
Tracing route to 85.205.252.161 on port 80
Over a maximum of 30 hops.
1       1 ms    1 ms    1 ms    192.168.1.1
2       13 ms   12 ms   12 ms   195.166.130.152 [lo0.11.central11.pcl-bng02.plus
.net]
3       22 ms   13 ms   12 ms   84.93.249.98    [irb.11.PCL-CR02.plus.net]
4       13 ms   13 ms   13 ms   195.166.129.6   [ae2.pcl-cr01.plus.net]
5       33 ms   15 ms   15 ms   195.166.129.4   [ae2.ptw-cr01.plus.net]
6       18 ms   27 ms   55 ms   195.66.224.209  [ldngw1.arcor-ip.net]
7       27 ms   26 ms   26 ms   85.205.1.21
8       *       *       *       Request timed out.
9       *       *       *       Request timed out.
10      *       *       *       Request timed out.
11

No matter how long I leave it though, nor how many times I run it,  I dont seem to get anything after 85.205.1.21

[#9]

Ive just done a wireshark capture.  I dont understand wirseshark properly, but I do know that those 6 black lines are bad. 
Expanding TCP Analysis I see these are suspected retransmissions - which I think means that 85.205.252.161 is not sending me an ACK (or Im not getting the ACK?)
I attach screen cap of the relevant capture if anyone knows what I should be looking at please.
Ignore MSS of 1360, that was me from MTU tweaking earlier when I took it down in steps to see if MTU tweaking made any difference.  Ive just not yet got around to setting it back to default.

[#10]

@bob (or one of the other reps)
I note that the issue was cleared for kdhuk when he had his static IP removed.
As a test would it be possible to temporary give me another IP (put me on dynamic) to see if by any chance this does resolve the issue?
It would be interesting to see if it could be a particular block of IPs or even if it is just static IPs.
I do not want to lose my static IP permanently though.  

[#11]

BUMP.
Can a rep answer if it is possible please?

Quote from: kitz

@bob (or one of the other reps) I note that the issue was cleared for kdhuk when he had his static IP removed. As a test would it be possible to temporary give me another IP (put me on dynamic) to see if by any chance this does resolve the issue? It would be interesting to see if it could be a particular block of IPs or even if it is just static IPs. I do not want to lose my static IP permanently though.

[#12]

So it seems the first completely non-responsive hop is a vodafone router/server (47.73.192.146).
Could be something Vodafone doesn't like about your IP, but kdhuk had an IP in the same subnet as mine (which isn't affected), and yours is in a different subnet entirely.
The wireshark screengrab isn't overly conclusive TBH, and I think the above IP's probably the culprit anyway.

Quote from: kitz

As a test would it be possible to temporary give me another IP (put me on dynamic) to see if by any chance this does resolve the issue? It would be interesting to see if it could be a particular block of IPs or even if it is just static IPs. I do not want to lose my static IP permanently though.

I can switch you to dynamic and re-instate a static IP later, but I can't guarantee it will be the same one.

[#13]

Hi bob, thanks for the reply.  I think I tend to agree that the issue is on vodafone somewhere.   I also have a nagging doubt about MTU.     Theres a massive thread about Vodafone Sure Signal and how they have difficulty connecting due to the PPPoE limitation of 1492.   It only seems to affect BT/Plusnet users on FTTC.

Re the IP - For the process of elimination it may be worth giving it a shot. ?
I have a subdomain which points to my IP, but if worst comes to worst I can ask my hosts amend the A record to a new one.

[#14]

My connection dropped and Im now back with a dynamic IP.
Straight away I can access the site again.

[#15]

I have had the same problem over the last 6 days on a site I use, its the only site I can't access unless I tether to my phone for connection, on a fixed IP with PlusNet.
Microsoft Windows [Version 10.0.10586]
(c) 2015 Microsoft Corporation. All rights reserved.
C:\Users\User>tracert fpvhub.com
Tracing route to fpvhub.com [188.65.117.67]
over a maximum of 30 hops:
  1    4 ms    2 ms    1 ms  home.gateway.home.gateway [192.168.1.254]
  2    15 ms    14 ms    13 ms  lo0.10.central13.pcl-bng03.plus.net [195.166.130.167]
  3    14 ms    13 ms    14 ms  irb.13.pcl-cr02.plus.net [84.93.249.130]
  4    15 ms    14 ms    17 ms  ae1.ptw-cr02.plus.net [195.166.129.2]
  5    16 ms    14 ms    14 ms  ae2.ptw-cr01.plus.net [195.166.129.4]
  6    15 ms    15 ms    15 ms  uk.slo.ld5.101.r1.misp.co.uk [195.66.225.228]
  7    26 ms    17 ms    17 ms  switch-001.sl5.misp.co.uk [185.52.26.253]
  8    *        *        *    Request timed out.
  9    *        *        *    Request timed out.
10    *        *        *    Request timed out.
11    *        *        *    Request timed out.
Trace complete.
C:\Users\User>

Can a Mod /PN change my static IP please or just put me on a dynamic IP for a week .
Cheers