IPv4 Addresses
gpcore.io. 300 IN A 104.26.8.80 gpcore.io. 300 IN A 104.26.9.80 gpcore.io. 300 IN A 172.67.70.232
IPv6 Addresses
gpcore.io. 300 IN AAAA 2606:4700:20:0:0:0:681A:850 gpcore.io. 300 IN AAAA 2606:4700:20:0:0:0:681A:950 gpcore.io. 300 IN AAAA 2606:4700:20:0:0:0:AC43:46E8
Name Servers
gpcore.io. 1200 IN NS elma.ns.cloudflare.com. gpcore.io. 1200 IN NS graham.ns.cloudflare.com.
Mail Servers
gpcore.io. 1200 IN MX 1 aspmx.l.google.com. gpcore.io. 1200 IN MX 5 alt1.aspmx.l.google.com. gpcore.io. 1200 IN MX 5 alt2.aspmx.l.google.com. gpcore.io. 1200 IN MX 10 alt3.aspmx.l.google.com. gpcore.io. 1200 IN MX 10 alt4.aspmx.l.google.com.
SOA Details
gpcore.io. 1200 IN SOA elma.ns.cloudflare.com. dns.cloudflare.com. 2402205373 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).
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.
gpcore.io. 300 IN DMARC v=DMARC1; p=quarantine; rua=mailto:[email protected];
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 |
|
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| + Pass | include |
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| + Pass | include |
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| + Pass | include |
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| ~ Softfail | all |
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gpcore.io. 1200 IN TXT "v=spf1 include:_spf.google.com include:mail.zendesk.com include:u12766834.wl085.sendgrid.net include:sendgrid.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).
Text Content
gpcore.io. 1200 IN TXT "google-site-verification=wYq63CO-7sawtHn6tm43nSZG2q9m1D7qZHBv7q43DYY"