if he is saying NOTHING at .dev resolves he prob having a hard time talking to the NS for that .tld
;; QUESTION SECTION:
;dev. IN NS
;; ANSWER SECTION:
dev. 21600 IN NS ns-tld1.charlestonroadregistry.com.
dev. 21600 IN NS ns-tld2.charlestonroadregistry.com.
dev. 21600 IN NS ns-tld3.charlestonroadregistry.com.
dev. 21600 IN NS ns-tld4.charlestonroadregistry.com.
dev. 21600 IN NS ns-tld5.charlestonroadregistry.com.
You would need to be able to talk to them to find the NS for git or get.dev
Do a simple dig +trace to validate where its failing in your resolving.
[2.4.4-RELEASE][admin@sg4860.local.lan]/: dig get.dev +trace
; <<>> DiG 9.12.2-P1 <<>> get.dev +trace
;; global options: +cmd
. 66288 IN NS c.root-servers.net.
. 66288 IN NS k.root-servers.net.
. 66288 IN NS g.root-servers.net.
. 66288 IN NS i.root-servers.net.
. 66288 IN NS f.root-servers.net.
. 66288 IN NS j.root-servers.net.
. 66288 IN NS a.root-servers.net.
. 66288 IN NS e.root-servers.net.
. 66288 IN NS b.root-servers.net.
. 66288 IN NS d.root-servers.net.
. 66288 IN NS m.root-servers.net.
. 66288 IN NS l.root-servers.net.
. 66288 IN NS h.root-servers.net.
. 66288 IN RRSIG NS 8 0 518400 20190610050000 20190528040000 25266 . 0H4mdqwNzsPc9zj1uE2ibA5aq7uQfushwBzqoGyZ8xfdo6TvP/QOOdLr JDd5mOKyAPxcSE3BbzmrXehBGma2NtXLKtfj3lrJskAU6N0EFPUcuVzr fAlv0SoB2XiE5Edt804/3xAaplTzHFpBcrZ55yJAmC74R1F0M7EDlJva 6qcPdbY8gatOdKgEbERfhic5JPqMd3MbVkCOnuddfbABCKXBmT/UqRDQ yHAF8sgBsQVC0AjDKXA40lazzJL4G66fBFDWYCox4bUuI6hECgOvR9DQ 8rSqkrDfiJLGSzjlSwBEjL2We3jrPZBsEF6c+VgZCsNh4F/BuEJDrR9p zgjYtw==
;; Received 525 bytes from 127.0.0.1#53(127.0.0.1) in 0 ms
dev. 172800 IN NS ns-tld3.charlestonroadregistry.com.
dev. 172800 IN NS ns-tld4.charlestonroadregistry.com.
dev. 172800 IN NS ns-tld5.charlestonroadregistry.com.
dev. 172800 IN NS ns-tld1.charlestonroadregistry.com.
dev. 172800 IN NS ns-tld2.charlestonroadregistry.com.
dev. 86400 IN DS 60074 8 2 B942E2CE5AEBF62FCA59D05707E6DBB795211D540D8ADBA02E9E89E8 33424785
dev. 86400 IN RRSIG DS 8 1 86400 20190610170000 20190528160000 25266 . oJCQxMsllCe0xNwvMe7/5iBx/iLMufP+n4mwf11MDmgOcme/Eb9a2/Xe NWkpUqnTWHkZgNapX5bTDQv0Yjn4FFL4z68nM/Y9+8xeJnPB9s5ILogL AkJSVEA9dR9WM/AdMdZljg8YztIckFrrIdYoO6f+AZICV60hvOPtPZ9w OCGhMn9Y972OcON1R3eYqchLrftJN+mX6yer+DYR3vUP5PU6Syh9rUYy dNFbRD0VAK2kntM46iNv/QnC2IjaM6Lz6DnuMiWuTzLqNZkxF8UDOmDG mHFj3dfJFCRFUg6H7scvJD4q9ZJqz5ed8XYJw8PBzFVe3aCVeT6JnqA0 4b6Wlg==
;; Received 727 bytes from 2001:dc3::35#53(m.root-servers.net) in 78 ms
get.dev. 180 IN NS ns1.zdns.google.
get.dev. 180 IN NS ns2.zdns.google.
get.dev. 180 IN NS ns3.zdns.google.
get.dev. 180 IN NS ns4.zdns.google.
;; Received 119 bytes from 216.239.34.105#53(ns-tld2.charlestonroadregistry.com) in 116 ms
get.dev. 300 IN A 216.239.32.29
get.dev. 300 IN RRSIG A 8 2 300 20190627160939 20190528160939 18228 get.dev. g2I2US1nIcPKuadX58qSW5O1RKTKRGxh8xIyFS/EdYFbktjSytQmWgbc 4s0IbkWmkFvYYpIchd2UdaOYz+NoImEaztC9pTy6ohXRId1EmPIzkK4R sCGE7Y7zEtLUmYSB7B6EzQGKTEsXL3n//74NI05CNUHQu9Dpz8q1Zhx5 gWA=
;; Received 219 bytes from 216.239.38.114#53(ns4.zdns.google) in 23 ms
[2.4.4-RELEASE][admin@sg4860.local.lan]/: