My ISP = faster (closer to me)
Este é um equívoco comum, a distância não compõe a velocidade por conta própria. Compare usando os antigos cabos de rede única de metal para os mais novos sistemas múltiplos cabos de fibra de vidro, como EuroDOCSIS 3.0 .
Diferente do atraso de propagação, você também tem um atraso de processamento no servidor; Tenho certeza de que o servidor DNS em um ISP é menos poderoso para um servidor DNS hospedado pelo Google, portanto, é completamente possível ou um servidor que está em uma distância muito maior para ser realmente mais rápido do que o servidor DNS do seu provedor ... / p>
Hospedar seu roteador / servidor DNS pode ser o mais rápido, embora não tenha todos os registros DNS armazenados!
Onamebench do Google pode ajudar você a escolher um servidor DNS melhor. O restante da sua pergunta é subjetivo.
Are you a power-user with 5 minutes to spare? Do you want a faster internet experience?
Try out namebench. It hunts down the fastest DNS servers available for your computer to use. namebench runs a fair and thorough benchmark using your web browser history, tcpdump output, or standardized datasets in order to provide an individualized recommendation. namebench is completely free and does not modify your system in any way. This project began as a 20% project at Google.
namebench runs on Mac OS X, Windows, and UNIX, and is available with a graphical user interface as well as a command-line interface.
Aqui estão os ecrãs pelos quais passará enquanto utiliza este programa:
Existe também uma versão de linha de comando:
Final list of nameservers considered:
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130.85.1.5 UMBC 5 US 56 ms |
208.67.222.220 OpenDNS-3 56 ms | www.google.com is hijacked: google.navigation.opendns.com
209.244.0.4 Level3-R2 62 ms |
216.146.35.35 DynGuide 63 ms | NXDOMAIN Hijacking
204.9.56.9 BroadAspect US 63 ms |
8.8.4.4 Google Public DNS- 64 ms | Replica of Google Public DNS [8.8.8.8]
208.67.220.220 OpenDNS 65 ms | www.google.com is hijacked: google.navigation.opendns.com
156.154.70.1 UltraDNS 67 ms | NXDOMAIN Hijacking
127.0.0.1 Localhost IPv4 68 ms | NXDOMAIN Hijacking (www)
209.18.47.61 RoadRunner NC US 68 ms | Replica of RoadRunner NC-2 US [209.18.47.62], NXDOMAIN Hijacking (www)
156.154.71.22 Comodo Secure DNS- 80 ms | NXDOMAIN Hijacking
209.18.47.62 RoadRunner NC-2 US 104 ms | (excluded: Slower replica of RoadRunner NC US [209.18.47.61])
- Sending 250 queries to 11 servers...
Mean response (in milliseconds):
--------------------------------
Google Public DN ################# 64.85
Comodo Secure DN ################### 72.84
RoadRunner NC US ####################### 91.19
UltraDNS ####################### 91.61
Localhost IPv4 ########################### 108.66
OpenDNS ############################ 110.69
OpenDNS-3 ###################################### 149.85
DynGuide ####################################### 156.60
Level3-R2 ########################################### 169.81
UMBC 5 US ########################################### 172.63
BroadAspect US ##################################################### 214.19
Response Distribution Chart URL (200ms):
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http://chart.apis.google.com/chart?cht=lxy&chs=720x415&chxt=x,y&chg=10,20&chxr=0,0,200|1,0,100&chd=t:0,8,8,9,10,1...
Response Distribution Chart URL (Full):
---------------------------------------
http://chart.apis.google.com/chart?cht=lxy&chs=720x415&chxt=x,y&chg=10,20&chxr=0,0,3500|1,0,100&chd=t:0,0,0,1,1,1...
Recommended configuration (fastest + nearest):
----------------------------------------------
nameserver 8.8.4.4 # Google Public DNS-2
nameserver 127.0.0.1 # Localhost IPv4
nameserver 209.18.47.62 # RoadRunner NC-2 US