On Fri, 23 Jan 2009, Kristian Kielhofner wrote: > On Fri, Jan 23, 2009 at 9:18 AM, Steve Totaro > <stot...@asteriskhelpdesk.com> wrote: >> >> Fine using AT&T's (at least I think they belong to AT&T) DNS servers >> (Also do NTP). I will make this thread useful to someone. >> >> Listed below because they are easy to remember and have never failed >> me even when a customer's ISP's DNS is down, I get the call "Our >> Internet is Down" but they can ping my servers by IP. Also, can >> "speed up" complaints of a slow network (if DNS lookups are the reason >> for the slowness. >> >> 4.2.2.1 >> 4.2.2.2 >> 4.2.2.3 >> >> -- >> Thanks, >> Steve Totaro >> +18887771888 (Toll Free) >> +12409381212 (Cell) > > Steve, > > Those are Level(3)s anycast DNS servers - part of internet legend! > > I once talked to a Level(3) engineer about how many queries those > things do (combined) and it was amazing. I don't remember the exact > number but it was something in the TENS OF MILLIONS/day, maybe more. > It was one of those numbers (especially for daily traffic) that you > just don't really comprehend. > > I've read (on NANOG, of course) that Level(3) actually encourages > (at least doesn't discourage) their public use. They log the queries > and sell the results for data mining purposes (DNS Alexa perhaps). >
Can you imagine the cache they hold? Surely the most abused DNS servers in the world. That is why they seem to "speed up" your slow Internet links. j _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
