blastdns 1.9.1

Async DNS lookup library for bulk/parallel DNS resolution
Documentation 
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$TTL 300
@   IN  SOA ns1.zonetransfer.test. admin.zonetransfer.test. (
            2024010101  ; serial
            3600        ; refresh
            900         ; retry
            604800      ; expire
            300         ; minimum TTL
        )

; NS records
@       IN  NS      ns1.zonetransfer.test.

; A records
@       IN  A       127.0.0.1
ns1     IN  A       127.0.0.1
mail    IN  A       127.0.0.2
www     IN  A       127.0.0.3
ftp     IN  A       127.0.0.4
ldap    IN  A       127.0.0.5

; AAAA records
ipv6    IN  AAAA    ::1

; MX records
@       IN  MX  10  mail.zonetransfer.test.

; CNAME records
api     IN  CNAME   www.zonetransfer.test.

; TXT records
@       IN  TXT     "v=spf1 include:zonetransfer.test ~all"

; SRV records
_ldap._tcp  IN  SRV     0 100 389 ldap.zonetransfer.test.

; PTR records (reverse lookup)
1.0.0   IN  PTR     ns1.zonetransfer.test.

; NSEC records (for NSEC walking tests)
@       IN  NSEC    api.zonetransfer.test. A NS SOA MX TXT AAAA NSEC
api     IN  NSEC    ftp.zonetransfer.test. CNAME NSEC