Everything works fine for few months. DNS problem

[jackaldu]

Hello lately I have problem with my pages. It looks like my ISP don’t receive dns information from server. All works fine for few months. No only way to acces webpages is to input ip. Is there any way to check if server is sending dns information?

Respons from my ISP
"
It looks like there is ACL on router or FW or there maybe problem with AS TPNETu

;; global options: printcmd
. 477483 IN NS I.ROOT-SERVERS.NET.
. 477483 IN NS J.ROOT-SERVERS.NET.
. 477483 IN NS K.ROOT-SERVERS.NET.
. 477483 IN NS L.ROOT-SERVERS.NET.
. 477483 IN NS M.ROOT-SERVERS.NET.
. 477483 IN NS A.ROOT-SERVERS.NET.
. 477483 IN NS B.ROOT-SERVERS.NET.
. 477483 IN NS C.ROOT-SERVERS.NET.
. 477483 IN NS D.ROOT-SERVERS.NET.
. 477483 IN NS E.ROOT-SERVERS.NET.
. 477483 IN NS F.ROOT-SERVERS.NET.
. 477483 IN NS G.ROOT-SERVERS.NET.
. 477483 IN NS H.ROOT-SERVERS.NET.
;; Received 436 bytes from 194.204.159.1#53(194.204.159.1) in 16 ms

pl. 172800 IN NS G-DNS.pl.
pl. 172800 IN NS A-DNS.pl.
pl. 172800 IN NS B-DNS.pl.
pl. 172800 IN NS C-DNS.pl.
pl. 172800 IN NS D-DNS.pl.
pl. 172800 IN NS E-DNS.pl.
pl. 172800 IN NS F-DNS.pl.
;; Received 333 bytes from 192.36.148.17#53(I.ROOT-SERVERS.NET) in 46 ms

24on.pl. 86400 IN NS ns2.supik.info.
24on.pl. 86400 IN NS ns1.supik.info.
;; Received 71 bytes from 149.156.1.6#53(G-DNS.pl) in 28 ms

;; connection timed out; no servers could be reached
"