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Allan
Allan
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On certain routers: pinging ip addresses MacBook DNS works behind some routers, but dns does notdoesn't behind others

I've found WiFi routers where I cannot open domains, but ping ipIP addresses just fine. This means I can't browse websites. This happens only on my Macbook, and these connections work fine for Windows laptops. How do I fix this?

On certain routers: pinging ip addresses works, but dns does not

I've found WiFi routers where I cannot open domains, but ping ip addresses just fine. This means I can't browse websites. This happens only on my Macbook, and these connections work fine for Windows laptops. How do I fix this?

MacBook DNS works behind some routers, doesn't behind others

I've found WiFi routers where I cannot open domains, but ping IP addresses just fine. This means I can't browse websites. This happens only on my Macbook, and these connections work fine for Windows laptops. How do I fix this?

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Amin Shah Gilani
Amin Shah Gilani
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I've found WiFi routers where I cannot open domains, but ping ip addresses just fine. This means I can't browse websites. This happens only on my Macbook, and these connections work fine for Windows laptops. How do I fix this?

I've found WiFi routers where I cannot open domains, but ping ip addresses just fine. This means I can't browse websites. How do I fix this?

I've found WiFi routers where I cannot open domains, but ping ip addresses just fine. This means I can't browse websites. This happens only on my Macbook, and these connections work fine for Windows laptops. How do I fix this?

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Amin Shah Gilani
Amin Shah Gilani
  • 245
  • 2
  • 7

On certain routers: pinging ip addresses works, but dns does not

I've found WiFi routers where I cannot open domains, but ping ip addresses just fine. This means I can't browse websites. How do I fix this?

I have two internet AP at my office, one is problematic, one isn't. I also have a wifi at home that works, but another wifi at my friend's house doesn't work.

Details

These tests were performed on the same machine. I can switch to either WiFi and this always happens.

Routers that are fine:

$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: icmp_seq=0 ttl=48 time=246.502 ms
64 bytes from 8.8.8.8: icmp_seq=1 ttl=48 time=256.395 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=48 time=233.746 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=48 time=391.504 ms
^C
--- 8.8.8.8 ping statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 233.746/282.037/391.504/63.709 ms

$ ping google.com
PING google.com (172.217.24.110): 56 data bytes
64 bytes from 172.217.24.110: icmp_seq=0 ttl=56 time=301.756 ms
64 bytes from 172.217.24.110: icmp_seq=1 ttl=56 time=146.550 ms
64 bytes from 172.217.24.110: icmp_seq=2 ttl=56 time=159.926 ms
64 bytes from 172.217.24.110: icmp_seq=3 ttl=56 time=160.761 ms
^C
--- google.com ping statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 146.550/192.248/301.756/63.475 ms

$ nslookup google.com
Server:     8.8.8.8
Address:    8.8.8.8#53

Non-authoritative answer:
Name:   google.com
Address: 74.125.200.113
Name:   google.com
Address: 74.125.200.138
Name:   google.com
Address: 74.125.200.101
Name:   google.com
Address: 74.125.200.102
Name:   google.com
Address: 74.125.200.100
Name:   google.com
Address: 74.125.200.139


$ dig google.com

; <<>> DiG 9.8.3-P1 <<>> google.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52892
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;google.com.            IN  A

;; ANSWER SECTION:
google.com.     299 IN  A   172.217.24.110

;; Query time: 254 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Thu Oct 20 14:28:26 2016
;; MSG SIZE  rcvd: 44

Routers that are problematic:

$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: icmp_seq=0 ttl=43 time=275.333 ms
64 bytes from 8.8.8.8: icmp_seq=1 ttl=43 time=167.851 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=43 time=160.801 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=43 time=193.566 ms
^C
--- 8.8.8.8 ping statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 160.801/199.388/275.333/45.511 ms

$ ping google.com
ping: cannot resolve google.com: Unknown host

$ nslookup google.com
;; connection timed out; no servers could be reached

$ dig google.com

; <<>> DiG 9.8.3-P1 <<>> google.com
;; global options: +cmd
;; connection timed out; no servers could be reached