IPv4 Addresses
devicevalidation.io. 300 IN A 104.21.8.251 devicevalidation.io. 300 IN A 172.67.188.219
IPv6 Addresses
devicevalidation.io. 300 IN AAAA 2606:4700:3030:0:0:0:6815:8FB devicevalidation.io. 300 IN AAAA 2606:4700:3035:0:0:0:AC43:BCDB
Name Servers
devicevalidation.io. 1200 IN NS colette.ns.cloudflare.com. devicevalidation.io. 1200 IN NS yew.ns.cloudflare.com.
SOA Details
devicevalidation.io. 1200 IN SOA colette.ns.cloudflare.com. dns.cloudflare.com. 2404604259 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.
devicevalidation.io. 300 IN DMARC v=DMARC1; p=none; sp=none; pct=100; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
DKIM
devicevalidation.io. 300 IN DKIM v=DKIM1; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDBX9AynUJ2zrXb0IDHXm0bDZiBRAw6vOne5erYCQbtRDzbyonItJIMDnTr1gwKl+rG8xDeedrYxu26zaxjMHPQo6M+Y9lZdjgwKL/Ru0f8gzxETfeLYN4SlOYqf2eXz5+J/4EZhFjD+9ZEm3n4tcePCliKSo6UePBNRKH4kOKo4QIDAQAB
SPF (Sender Policy Framework)
| Qualifier | Mechanism | Target / value | Valid | Details |
|---|---|---|---|---|
| + Pass | include |
|
||
| + Pass | include |
|
||
| ~ Softfail | all |
—
|
|
devicevalidation.io. 1200 IN TXT "v=spf1 include:_spf.devicevalidation.io include:_spf.da-tech.net ~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).