IPv4 Addresses
twelve.tools. 300 IN A 104.21.83.166 twelve.tools. 300 IN A 172.67.179.55
IPv6 Addresses
twelve.tools. 300 IN AAAA 2606:4700:3031:0:0:0:AC43:B337 twelve.tools. 300 IN AAAA 2606:4700:3033:0:0:0:6815:53A6
Name Servers
twelve.tools. 1200 IN NS clark.ns.cloudflare.com. twelve.tools. 1200 IN NS fiona.ns.cloudflare.com.
Mail Servers
twelve.tools. 300 IN MX 36 route1.mx.cloudflare.net. twelve.tools. 300 IN MX 45 route2.mx.cloudflare.net. twelve.tools. 300 IN MX 48 route3.mx.cloudflare.net.
SOA Details
twelve.tools. 1200 IN SOA clark.ns.cloudflare.com. dns.cloudflare.com. 2412338884 10000 2400 604800 1800
Certificate Authority Authorization
No CAA records were returned at this registrable domain name. With no CAA policy, any public certificate authority (CA) may issue TLS certificates for names under this zone unless a parent publishes CAA; add issue / issuewild / iodef records to restrict issuance.
DMARC
Organizational policy (p): how receivers treat mail that fails aligned DMARC checks — none (monitor only), quarantine (often junk), or reject (block).
Subdomain policy (sp): when set, it applies to hostnames below this domain instead of p; if omitted, subdomains inherit the organizational policy.
pct: share of mail that gets quarantine/reject; 100 = all failing messages (default).
100Aggregate DMARC reports (ZIP/XML). Optional but recommended for visibility.
Forensic (per-failure) reports. Often omitted for privacy or volume.
twelve.tools. 300 IN DMARC v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s;
DKIM
No DKIM TXT with `v=DKIM1` was returned for the selector names we probe automatically.
SPF (Sender Policy Framework)
| Qualifier | Mechanism | Target / value | Valid | Details |
|---|---|---|---|---|
| + Pass | include |
|
||
| + Pass | include |
|
||
| ~ Softfail | all |
—
|
|
twelve.tools. 300 IN TXT "v=spf1 include:_spf.mx.cloudflare.net include:spf.zeptomail.com ~all"
MTA-STS
This hostname does not publish an MTA-STS policy (no v=STSv1 TXT at _mta-sts.<name> and/or no policy at https://mta-sts.<name>/.well-known/mta-sts.txt).
Text Content
twelve.tools. 300 IN TXT "google-site-verification=_XqSUHAIr1KFFXUf21gd9-jwElqrSKDb-vbxuXV6Lso"