Is there a way to get all IP addresses of youtube to block it with Windows Firewall?

Question

I want to programme my own anti distraction tool. I can not / do not want to use hosts or third party apps. When using IPSEC or Windows firewall, it only accepts IP adresses. Th

Answer 1

If you have your own DNS server you can block domains from resolving. Here is a guide to block domains in Bind DNS server.

To get all the IP addresses there is no way. What you can do is, install dig. It's available in linux but not in windows.

Then time to time enter dig youtube.com. It'll show you all the resolved IPs from DNS cache.

See my result

$ dig youtube.com A

; <<>> DiG 9.7.0-P1 <<>> youtube.com A
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13442
;; flags: qr rd ra; QUERY: 1, ANSWER: 16, AUTHORITY: 0, ADDITIONAL: 0

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

;; ANSWER SECTION:
youtube.com.            83      IN      A       74.125.235.47
youtube.com.            83      IN      A       74.125.235.46
youtube.com.            83      IN      A       74.125.235.45
youtube.com.            83      IN      A       74.125.235.44
youtube.com.            83      IN      A       74.125.235.43
youtube.com.            83      IN      A       74.125.235.42
youtube.com.            83      IN      A       74.125.235.41
youtube.com.            83      IN      A       74.125.235.40
youtube.com.            83      IN      A       74.125.235.39
youtube.com.            83      IN      A       74.125.235.38
youtube.com.            83      IN      A       74.125.235.37
youtube.com.            83      IN      A       74.125.235.36
youtube.com.            83      IN      A       74.125.235.35
youtube.com.            83      IN      A       74.125.235.34
youtube.com.            83      IN      A       74.125.235.33
youtube.com.            83      IN      A       74.125.235.32

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Sat Feb 18 22:26:58 2012
;; MSG SIZE  rcvd: 285