Got up this morning and can't get on the Internet other than 3G on the phone. Tried plugging MacBook in direct via Ethernet cable and still nothing. Tried all the obvious switching off , unplugging , changing micro filters but still nothing . Even re booted the router and restoring to factory settings and even swapped for an old router.
Bit the bullet and rang sky and they did loads of things like testing the line but still nothing.
Now weirdly there's a couple of random websites I can get on , google being one. But other than that I can't get on anything else on the laptop , two iPhones or tablets.
Anyone got any ideas as I'm totally flummoxed
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Not much you can do but wait for Sky to fix it.
ping 4.2.2.2
If you get a response back like this:
Pinging 4.2.2.2 with 32 bytes of data:
Reply from 4.2.2.2: bytes=32 time=7ms TTL=56
Reply from 4.2.2.2: bytes=32 time=7ms TTL=56
Reply from 4.2.2.2: bytes=32 time=8ms TTL=56
Reply from 4.2.2.2: bytes=32 time=7ms TTL=56
Ping statistics for 4.2.2.2:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 7ms, Maximum = 8ms, Average = 7ms
then you are at least connected to the outside world. If you get this or similar:
Pinging 4.2.2.2 with 32 bytes of data:
Reply from 192.168.1.2: Destination host unreachable.
Reply from 192.168.1.2: Destination host unreachable.
Reply from 192.168.1.2: Destination host unreachable.
Reply from 192.168.1.2: Destination host unreachable.
Ping statistics for 4.2.2.2:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss)
then you have no connection to the world and are just seeing cached versions of the sites you appear able to access. AT this point, it's likely to be an Exchange fault - but not impossible that your router has gone tits up.
If you do get a response from your ping, then try this:
ping www.google.com
If you get ping responses back, then you should be OK - and will need to make further checks on your line (quality could be bad, there could be latency, your ISP could be experincing routing issues or dozens of other things). If you DON'T get ping responses back, then DNS (translates IP addresses into user-readable names) is at fault - your hosts file may have been hijacked by malware, or your DNS servers may have changed from the ones provided by your ISP, or the ISP's DNS servers themselves may be experiencing problems.