The DNS server is not responding to a SOA record request over TCP

Hello! There is a problem when delegating the domain sport-kostyumy.ru. The domain is registered on https://www.nic.ru. The following server DNS are specified:
pns11.cloudns.net
pns12.cloudns.net
pns13.cloudns.net
pns14.cloudns.net

When testing DNS, the following is returned:
The DNS server is not responding to a SOA record request over TCP. The DNS server name has been removed from the list of scanned.

martend@stryker:~$ dig sport-kostyumy.ru @pns11.cloudns.net

; <<>> DiG 9.11.3-1ubuntu1.9-Ubuntu <<>> sport-kostyumy.ru @pns11.cloudns.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63724
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;sport-kostyumy.ru.      IN   A

;; ANSWER SECTION:
sport-kostyumy.ru.   300   IN   A   176.119.28.104

;; AUTHORITY SECTION:
sport-kostyumy.ru.   3600   IN   NS   pns13.cloudns.net.
sport-kostyumy.ru.   3600   IN   NS   pns12.cloudns.net.
sport-kostyumy.ru.   3600   IN   NS   pns11.cloudns.net.
sport-kostyumy.ru.   3600   IN   NS   pns14.cloudns.net.

;; Query time: 15 msec
;; SERVER: 2a06:fb00:1::1:133#53(2a06:fb00:1::1:133)
;; WHEN: Thu Oct 24 21:57:24 CEST 2019
;; MSG SIZE  rcvd: 153

DNS did catch up