Сайт долго открывается, множественные обращения к стороннему серверу

В результате обработки скриптов сайта наблюдаются множественные обращения к стороннему серверу с IP адресом 185.43.223.239:

connect(4, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("185.43.223.239")}, 16) = -1 EINPROGRESS (Operation now in progress)
poll([{fd=4, events=POLLOUT}], 1, 5000) = 0 (Timeout)
getsockopt(4, SOL_SOCKET, SO_ERROR, [4294967296], [4]) = 0
close(4) = 0
rt_sigaction(SIGALRM, NULL, {SIG_DFL, [], SA_RESTORER, 0x7fb9890822d0}, 8) = 0
rt_sigaction(SIGALRM, {0x7fb987f85a20, [], SA_RESTORER, 0x7fb9890822d0}, NULL, 8) = 0
alarm(5) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigaction(SIGALRM, {SIG_DFL, [], SA_RESTORER, 0x7fb9890822d0}, NULL, 8) = 0
alarm(0) = 5
socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 4
fcntl(4, F_GETFL) = 0x2 (flags O_RDWR)
fcntl(4, F_SETFL, O_RDWR|O_NONBLOCK) = 0
connect(4, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("185.43.223.239")}, 16) = -1 EINPROGRESS (Operation now in progress)
poll([{fd=4, events=POLLOUT}], 1, 5000) = 0 (Timeout)
getsockopt(4, SOL_SOCKET, SO_ERROR, [4294967296], [4]) = 0
close(4) = 0
rt_sigaction(SIGALRM, NULL, {SIG_DFL, [], SA_RESTORER, 0x7fb9890822d0}, 8) = 0
rt_sigaction(SIGALRM, {0x7fb987f85a20, [], SA_RESTORER, 0x7fb9890822d0}, NULL, 8) = 0
alarm(5) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigaction(SIGALRM, {SIG_DFL, [], SA_RESTORER, 0x7fb9890822d0}, NULL, 8) = 0
alarm(0) = 5
socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 4
fcntl(4, F_GETFL) = 0x2 (flags O_RDWR)
fcntl(4, F_SETFL, O_RDWR|O_NONBLOCK) = 0
connect(4, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("185.43.223.239")}, 16) = -1 EINPROGRESS (Operation now in progress)
poll([{fd=4, events=POLLOUT}], 1, 5000^C <unfinished ...>

Который на данный момент недоступен. В следствии чего сайт работает некорректно.