❯ ./chkdns
Introduce un dominio: facebook.com

@      157.240.246.35 --> [edge-star-mini-shv-02-mad1.facebook.com.]
@      2a03:2880:f104:181:face:b00c:0:25de --> [edge-star-mini6-shv-02-mad1.facebook.com.]
WWW    157.240.246.35 --> [edge-star-mini-shv-02-mad1.facebook.com.]
WWW    2a03:2880:f104:181:face:b00c:0:25de --> [edge-star-mini6-shv-02-mad1.facebook.com.]
MX     smtpin.vvv.facebook.com. --> [173.252.87.251 2a03:2880:11ff:fffd:face:b00c:0:686e]
NS     c.ns.facebook.com. --> [185.89.218.12 2a03:2880:f1fc:c:face:b00c:0:35]
NS     b.ns.facebook.com. --> [129.134.31.12 2a03:2880:f0fd:c:face:b00c:0:35]
NS     a.ns.facebook.com. --> [129.134.30.12 2a03:2880:f0fc:c:face:b00c:0:35]
NS     d.ns.facebook.com. --> [185.89.219.12 2a03:2880:f1fd:c:face:b00c:0:35]
TXT    google-site-verification=wdH5DTJTc9AYNwVunSVFeK0hYDGUIEOGb-RReU6pJlY
TXT    google-site-verification=sK6uY9x7eaMoEMfn3OILqwTFYgaNp4llmguKI-C3_iA
TXT    v=spf1 redirect=_spf.facebook.com
TXT    google-site-verification=A2WZWCNQHrGV_TWwKh6KHY90tY0SHZo_RnyMJoDaG0s
DKIM   t=y; k=rsa; p=MHwwDQYJKoZIhvcNAQEBBQADawAwaAJhALkZ4wTn2SQ3EW0vVBExi8izmZZnjZH8JIY5Y964jzDORZku43o6ooFq6HLMjBxmcDYOrJFRdcsKDWtI0Be/uLfc/rClXuyEbcENXfadg77HHv35BI85RNy4TKeai3hxoQIDAQAB;
DMARC  v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100