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 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