What does "communication administratively prohibited" mean?

[kjbxcrzb 3]

Every so often my AirVPN connection seems to become unresponsive, as it is now. If I run a traceroute, I get this:
 

$ traceroute -n netflix.com
traceroute to netflix.com (54.171.21.76), 30 hops max, 60 byte packets
 1  10.12.152.1  28.185 ms  28.199 ms  28.197 ms
 2  109.202.106.81  36.160 ms !X  36.199 ms !X  36.198 ms !X

I assume 109.202.106.81 is an AirVPN server, but why is it returning "!X"? According to the man page, this means "communication administratively prohibited", but what does that really mean?

A reverse DNS lookukp on that IP returns "promarketserv.com", which is a bit of a worry.

Any ideas what's wrong here?

Thanks

[OpenSourcerer 1435]

2 hours ago, _sinnerman_ said:

I assume 109.202.106.81 is an AirVPN server

No, it isn't.
If you ping this address, it should tell you Destination Unreachable. Which means, at some point your connection to the server goes down, or something alters the routing table. Next hop should be the datacenter of the AirVPN server. You posted no logs or other info like the routing table contents to allow troubleshooting this, so we're in the dark.
 

2 hours ago, _sinnerman_ said:

A reverse DNS lookukp on that IP returns "promarketserv.com", which is a bit of a worry.

Really? I get a PTR record back leading nowhere.

$ dig PTR in 81.106.202.109.in-addr.arpa.

; <<>> DiG 9.11.5-P4-5.1+b1-Debian <<>> PTR in 81.106.202.109.in-addr.arpa.
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5839
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;81.106.202.109.in-addr.arpa.   IN      PTR

;; ANSWER SECTION:
81.106.202.109.in-addr.arpa. 600 IN     PTR     smtp2.promarketserv.com.

$ dig any in smtp2.promarketserv.com

; <<>> DiG 9.11.5-P4-5.1+b1-Debian <<>> any in smtp2.promarketserv.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 44746
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;smtp2.promarketserv.com.       IN      ANY