I thought you'd moved away from Tiscalli Steve (in the same way as someone might move away from a very cheap Chinese gasless MIG with a minimum 90 amps which has been mis-sold as something that might actually work).
Which ISP are you with these days?
I thought you'd moved away from Tiscalli Steve (in the same way as someone might move away from a very cheap Chinese gasless MIG with a minimum 90 amps which has been mis-sold as something that might actually work).
Im with AOL, no sniggers please.....
Still with ****calli MalcThe service resumed the other week (after problems) & to save time and disruption I stuck with em.
Which would you recommend then?
weldequip
sorry
DNS is like a giant telephone book.
Computers on the net are identified by a unique ip address that looks like this :-
89.145.76.7
Its like a phone number to computers, with 89 being the main area code and so on, each seperated by the dots representing a different telephone switch on the way to it. Just a set of "routing" information in a machine readable form.
Now, you could have to type in http://89.145.76.7 which is a bit awkward to remember (and it could be much worse when ipv6 gets implemented as it will become something like http://2001:1888:0:1:2d0:b7ff:fe7d:bed6 ) so domain names were thought up to make human readable versions of this.
If you think of domain names as peoples names in the phone book, and the ip address as their telephone number its a valid analogy since the normal telephone system uses the phone number to route the call in a similar way.
So, you type in http://www.mig-welding.co.uk/ into your browser, your pc then goes off and asks the big telephone book operator for your area (your DNS server) who mig-welding.co.uk is. It will answer you "oh its 89.145.76.7" so your pc can then go ask your router to go to 89.145.76.7 for the mig-welding.co.uk website.
Theres a little more to it in that no one telephone operator has a book with EVERYONE in the world in it as that would be humongous and permanently changing, so when you ask your operator, it has to go off and ask someone (the root servers) who is responsible for that extension (eg .co.uk) who to ask, then asks them for who it is and so on down the tree. Itll remember the answer for a bit in its memory or cache as it is known, (for the length of time specified in the record ttl or time to live) in case anyone else asks it for the same place to save having to go through all that again. Its why sites like www.bbc.co.uk respond quickly, because theyre already resolved in the cache so the server doesnt have to go off and research the answer first.
Now you understand the concept of dns, you can guess the rather cryptic "dns error" means your pc asked your (isp's ) domain name server and it either couldnt find the answer in its telephone book, or it just plain old didnt answer (possibly network congestion or other problems). Hence dns error.
Ive been over thinking again havent I ? I bet your glad you went to watch the apprentice. However Ive just read zen and the art of motorcycle maintenance and my brain is still wired...