Dig works but ping does not resolve host

I've configured the DNS settings for a host (admin.example-preprod.foobar.it with IP 100.100.100.100) but it does not resolve from every server I try (it does for some).

For example, I'm on a server which uses the following 3 DNS servers:

foobar@server:~$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 200.200.200.1
nameserver 200.200.200.2
nameserver 200.200.200.3

dig works for all of them.

first:

foobar@server:~$ dig admin.example-preprod.foobar.it @200.200.200.1

; <<>> DiG 9.9.5-3ubuntu0.7-Ubuntu <<>> admin.example-preprod.foobar.it @200.200.200.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6540
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 2
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;admin.example-preprod.foobar.it.        IN      A

;; ANSWER SECTION:
admin.example-preprod.foobar.it. 86400 IN A      100.100.100.100

;; AUTHORITY SECTION:
foobar.it.               86400   IN      NS      qwert.foobar.it.
foobar.it.               86400   IN      NS      ns0.xname.org.
foobar.it.               86400   IN      NS      ns1.xname.org.

;; ADDITIONAL SECTION:
qwert.foobar.it.         86400   IN      A       200.200.200.1

;; Query time: 46 msec
;; SERVER: 200.200.200.1#53(200.200.200.1)
;; WHEN: Fri Nov 04 10:35:46 EET 2016
;; MSG SIZE  rcvd: 156

second:

foobar@server:~$ dig admin.example-preprod.foobar.it @200.200.200.2

; <<>> DiG 9.9.5-3ubuntu0.7-Ubuntu <<>> admin.example-preprod.foobar.it @200.200.200.2
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 40127
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;admin.example-preprod.foobar.it.        IN      A

;; AUTHORITY SECTION:
foobar.it.               85817   IN      SOA     qwert.foobar.it. webmaster.foobar.it. 2016092901 10800 900 1814400 10800

;; Query time: 3 msec
;; SERVER: 200.200.200.2#53(200.200.200.2)
;; WHEN: Fri Nov 04 10:36:05 EET 2016
;; MSG SIZE  rcvd: 111

third:

foobar@server:~$ dig admin.example-preprod.foobar.it @200.200.200.3

; <<>> DiG 9.9.5-3ubuntu0.7-Ubuntu <<>> admin.example-preprod.foobar.it @200.200.200.3
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2392
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;admin.example-preprod.foobar.it.        IN      A

;; ANSWER SECTION:
admin.example-preprod.foobar.it. 86400 IN A      100.100.100.100

;; AUTHORITY SECTION:
foobar.it.               86400   IN      NS      qwert.foobar.it.
foobar.it.               86400   IN      NS      ns1.xname.org.
foobar.it.               86400   IN      NS      ns0.xname.org.

;; ADDITIONAL SECTION:
qwert.foobar.it.         81845   IN      A       200.200.200.1

;; Query time: 2309 msec
;; SERVER: 200.200.200.3#53(200.200.200.3)
;; WHEN: Fri Nov 04 10:35:56 EET 2016
;; MSG SIZE  rcvd: 156

but then, when I try to ping it gives me unknown host:

foobar@server:~$ ping admin.example-preprod.foobar.it
ping: unknown host admin.example-preprod.foobar.it

How is that possible and where should I look at to solve the problem?