Comunque il DNS TIM confermo risponde correttamente, non è che chi ha altri ISP basta che lo aggiunge al DNS locale?
pi@newmilkyway:~ $ dig @85.38.28.2 epdg.epc.mnc001.mcc222.pub.3gppnetwork.org ANY
; <<>> DiG 9.11.5-P4-5.1+deb10u8-Debian <<>> @85.38.28.2 epdg.epc.mnc001.mcc222.pub.3gppnetwork.org ANY
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34955
;; flags: qr rd ra; QUERY: 1, ANSWER: 7, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1220
; COOKIE: 7758e36ffa8769b8425e322d63871b5c0699e3fd8a86da01 (good)
;; QUESTION SECTION:
;epdg.epc.mnc001.mcc222.pub.3gppnetwork.org. IN ANY
;; ANSWER SECTION:
epdg.epc.mnc001.mcc222.pub.3gppnetwork.org. 1748 IN NS dns-ctrl.telecomitalia.it.
epdg.epc.mnc001.mcc222.pub.3gppnetwork.org. 1748 IN NS dns-bersaglio.telecomitalia.it.
epdg.epc.mnc001.mcc222.pub.3gppnetwork.org. 1748 IN NS dns-inviolatella.telecomitalia.it.
epdg.epc.mnc001.mcc222.pub.3gppnetwork.org. 1748 IN NS dns-malpaga.telecomitalia.it.
epdg.epc.mnc001.mcc222.pub.3gppnetwork.org. 25241 IN A 217.200.184.114
epdg.epc.mnc001.mcc222.pub.3gppnetwork.org. 25241 IN A 217.200.184.104
epdg.epc.mnc001.mcc222.pub.3gppnetwork.org. 25241 IN A 217.200.184.107
;; Query time: 10 msec
;; SERVER: 85.38.28.2#53(85.38.28.2)
;; WHEN: Wed Nov 30 08:59:08 GMT 2022
;; MSG SIZE rcvd: 271