17
records
IPv4 Addresses
TTL
certainly.io. 1200 IN A 185.158.133.1
Name Servers
TTL
20m
20m
20m
certainly.io. 1200 IN NS ns-1255.awsdns-28.org. certainly.io. 1200 IN NS ns-1574.awsdns-04.co.uk. certainly.io. 1200 IN NS ns-465.awsdns-58.com. certainly.io. 1200 IN NS ns-917.awsdns-50.net.
Mail Servers
TTL
certainly.io. 1200 IN MX 0 certainly-io.mail.protection.outlook.com.
SOA Details
TTL
15m
SOA
Responsible
awsdns-hostmaster.amazon.com
SOA
Serial
1
SOA
Times
Refresh
2h
Retry
15m
Expire
14d
Minimum TTL
1d
certainly.io. 900 IN SOA ns-1255.awsdns-28.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Certificate Authority Authorization
TTL
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
TTL
DMARC
Policy
Organizational policy (p): how receivers treat mail that fails aligned DMARC checks — none (monitor only), quarantine (often junk), or reject (block).
none
quarantine
reject
20m
DMARC
Percentage
pct: share of mail that gets quarantine/reject; 100 = all failing messages (default).
100
DMARC
RUA
mailto:[email protected]
Aggregate DMARC reports (ZIP/XML). Optional but recommended for visibility.
DMARC
RUF
mailto:[email protected]
Forensic (per-failure) reports. Often omitted for privacy or volume.
certainly.io. 1200 IN DMARC v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
DKIM
TTL
DKIM
Selector
selector1
v=DKIM1
k=rsa
20m
Public Key
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2ggAM8sCT5BU...
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2ggAM8sCT5BUyXyiRGRUjnGa9lViFJn3zNpkM/mrd7Z6xqkwF9qMCLHOLHmL1VuUV7+d9oQsu/TibcOpjo0fK2pqZ2H3DCWicevdYCGWPArRQ1dlSQ4ZkNDxgrk9OOFNo90oY4HmBLcurOsffcwYRKrjeVej97X32ppRcN45tP4CufClS0dNgH2yr1qO482efbT5VDN1K519rAc1s87SSTJ4DpxThDe6AznggCDRfWY8H8NbBvKxAbFmfP67f6I1Lpt+RbThcOwSfLxVPHMV1IwfGsP9ERh18lLtDtfKwUHigsCXNT4ogEJInvp6zL9J7P1fMdRz6ZMtPpUaePlrXQIDAQAB
certainly.io. 1200 IN DKIM v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2ggAM8sCT5BUyXyiRGRUjnGa9lViFJn3zNpkM/mrd7Z6xqkwF9qMCLHOLHmL1VuUV7+d9oQsu/TibcOpjo0fK2pqZ2H3DCWicevdYCGWPArRQ1dlSQ4ZkNDxgrk9OOFNo90oY4HmBLcurOsffcwYRKrjeVej97X32ppRcN45tP4CufClS0dNgH2yr1qO482efbT5VDN1K519rAc1s87SSTJ4DpxThDe6AznggCDRfWY8H8NbBvKxAbFmfP67f6I1Lpt+RbThcOwSfLxVPHMV1IwfGsP9ERh18lLtDtfKwUHigsCXNT4ogEJInvp6zL9J7P1fMdRz6ZMtPpUaePlrXQIDAQAB;
SPF (Sender Policy Framework)
TTL
SPF
SPFv1
| Qualifier | Mechanism | Target / value | Valid | Details |
|---|---|---|---|---|
| + Pass | include |
|
||
| + Pass | include |
|
||
| + Pass | include |
|
||
| + Pass | include |
|
||
| - Fail | all |
—
|
|
20m
certainly.io. 1200 IN TXT "v=spf1 include:spf.protection.outlook.com include:mail.zendesk.com include:sendgrid.net include:25189408.spf04.hubspotemail.net -all"
MTA-STS
TTL
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
TTL
google-site-verification=3IQtpjE7vGL1Q2PkQDHuGFFYsdwg39BbqZdUQCBB0MM
20m
google-site-verification=5lvDnmCwFyPKtrFXgRPQf7WurZNlOUBj0_zVE_4D2Po
20m
google-site-verification=6z6D5M-L-T_o9dkIHPGdXeSOHVTIoxfkOi8OrTbkNM4
20m
google-site-verification=gUQH_cjrkY3t_N4X7n6EmMoDLiGxw-ERuUWky7k9vtI
20m
tiktok-developers-site-verification=EV2PP1T7AKPUGOTRYW4QkRZZXuoh5Eta
20m
twilio-domain-verification=048a3cac554bbe37b83835df2a14b425
20m
TXT
—
_v559uzxvfyrc493nzgq6d8dfyvzlp45
20m
certainly.io. 1200 IN TXT "google-site-verification=3IQtpjE7vGL1Q2PkQDHuGFFYsdwg39BbqZdUQCBB0MM" certainly.io. 1200 IN TXT "google-site-verification=5lvDnmCwFyPKtrFXgRPQf7WurZNlOUBj0_zVE_4D2Po" certainly.io. 1200 IN TXT "google-site-verification=6z6D5M-L-T_o9dkIHPGdXeSOHVTIoxfkOi8OrTbkNM4" certainly.io. 1200 IN TXT "google-site-verification=gUQH_cjrkY3t_N4X7n6EmMoDLiGxw-ERuUWky7k9vtI" certainly.io. 1200 IN TXT "tiktok-developers-site-verification=EV2PP1T7AKPUGOTRYW4QkRZZXuoh5Eta" certainly.io. 1200 IN TXT "twilio-domain-verification=048a3cac554bbe37b83835df2a14b425" certainly.io. 1200 IN TXT "_v559uzxvfyrc493nzgq6d8dfyvzlp45"