Add "Is playit blocked"

content/is-playit-blocked.md

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+title = "Is playit blocked on my network?"
+tags = ["playit", "networking"]
+description_file = "descriptions/is-playit-blocked.txt"
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+
+Knowing whether or not playit is blocked on your network can be hard. Here are some things to help determine if playit is blocked.
+
+## Ping your tunnel (DNS Check)
+
+Doing this will test your network's ability to resolve playit's domains into IP addresses. You can do this on any operating system with access to a command line interface. If it looks like this, you're good.
+
+### Windows
+```ps
+C:\Users\playit>ping lemon-airplanes.gl.joinmc.link
+
+Pinging lemon-airplanes.gl.joinmc.link [147.185.221.20] with 32 bytes of data:
+Reply from 147.185.221.20: bytes=32 time=30ms TTL=54
+Reply from 147.185.221.20: bytes=32 time=30ms TTL=54
+Reply from 147.185.221.20: bytes=32 time=30ms TTL=54
+Reply from 147.185.221.20: bytes=32 time=30ms TTL=54
+
+Ping statistics for 147.185.221.20:
+    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
+Approximate round trip times in milli-seconds:
+    Minimum = 30ms, Maximum = 30ms, Average = 30ms
+```
+
+### Linux / Mac
+
+```ps
+playit@playit-gg:~$ ping lemon-airplanes.gl.joinmc.link
+PING lemon-airplanes.gl.joinmc.link (147.185.221.20) 56(84) bytes of data.
+64 bytes from 147.185.221.20: icmp_seq=1 ttl=54 time=30.1 ms
+64 bytes from 147.185.221.20: icmp_seq=2 ttl=54 time=30.4 ms
+64 bytes from 147.185.221.20: icmp_seq=3 ttl=54 time=31.1 ms
+64 bytes from 147.185.221.20: icmp_seq=3 ttl=54 time=29.7 ms
+
+--- lemon-airplanes.gl.joinmc.link ping statistics ---
+4 packets transmitted, 4 received, 0% packet loss, time 4123ms
+rtt min/avg/max/mdev = 29.7/30.3/31.1/0.4 ms
+```
+
+### Another thing you may do is an `nslookup` or a nameserver lookup
+This will look at your DNS servers, and try to find your tunnel address with IP addresses.
+
+```ps
+C:\Users\playit>nslookup lemon-airplanes.gl.joinmc.link
+Server:  UnKnown
+Address:  2002:4982:e276:0:82cc:9cff:fe32:e798
+
+Non-authoritative answer:
+Name:    lemon-airplanes.gl.joinmc.link
+Addresses:  2602:fbaf:860:1::b5
+          147.185.221.181
+```
+
+However, if you get `Request timed out.` or nothing at all if you're on linux, you may need to change your DNS. Please note that this may not work for everyone.
+
+> You can visit this page for help
+>
+> [How to change your DNS server](https://playit.gg/support/update-your-dns/)

descriptions/is-playit-blocked.txt

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+Knowing whether or not playit is blocked on your network can be hard. Here are some things to help determine if playit is blocked.