Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
codecademy.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 04:33:14 UTC · ↺ Refresh
MX Hostnames
- codecademy-com.mail.protection.outlook.com
MX Priorities
- codecademy-com.mail.protection.outlook.com: 5
A / AAAA Records
- 104.17.183.120 (no PTR)
- 104.17.184.120 (no PTR)
- 2606:4700::6811:b878
- 2606:4700::6811:b778
Mail Server IPs
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
- 52.101.9.2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f901::2 ↩ mail-bl2pr02cu00402.inbound.protection.outlook.com
- 2a01:111:f403:c903::3 ↩ mail-mw2pr02cu00503.inbound.protection.outlook.com
- 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f90f:: ↩ mail-sa9pr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
arnold.ns.cloudflare.com dns.cloudflare.com 2399547911 10000 2400 604800 1800
Primary NS (mname)
arnold.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399547911
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
arnold.ns.cloudflare.com
serena.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:customeriomail.com include:mail.zendesk.com include:_spf.google.com include:spf.extole.io include:spf.protection.outlook.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1:s:d
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 5 found
google._domainkey
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
21 records- google-gws-recovery-domain-verification=57013633
- atlassian-domain-verification=m7Ac1Hv/T4ePJa3hgcqMgYHykrG65YAE+oy9aqlN+aDA0khgC0tZSgx/8G/3x/yv
- facebook-domain-verification=mm5a3aemk4cv9yfjikcr4de2xn0ait
- Mosyle-verification-1750951629
- SPFv=spf1 include:customeriomail.com include:mail.zendesk.com include:_spf.google.com include:spf.extole.io include:spf.protection.outlook.com -all
- google-site-verification=vIdZhswzF-KMQmIllHFhS6VnmeHUvsCKTccrXjab-Lw
- MS=ms80117904
- google-site-verification=H0SayPMoRT_4rzjNrg2YvbxiRvQbqSTlwSM0D0wht8U
- google-site-verification=0pRbsGszBlAjZisxsJ2qJLXoXIKCdDlCSK_67hy5BjY
- openai-domain-verification=dv-RFgs6gJx1YSwFBosC1y2RA1n
- figma-domain-verification=8c0a9ebe2f3a594d9d85faed8994ef2b073a992b28ea6a3e9fa3dc5582e18c25-1733342680
- MS=79764F463C8CD2E367B5BF7B1DF1B1C9FFE48501
- apple-domain-verification=6j9Dh5BuEBtMWMMg
- google-site-verification=BB5unuHbdt4pYsHrMorf_R-mKcUdy5Bk2vvz0Ie_q44
- DKIMv=DKIM1; p=
- segment-site-verification=NJFFQLAhEEX3Uyz0vgrzNf3fplm6iYsg
- google-site-verification=wkpord_VFYRlAcjf2hV21FHnsScCpA9YiMOQqACXsvQ
- google-site-verification=dqlGjeLuQLofS51hgFB6ptoJWM0EkcPoe7G1gmL9muw
- google-site-verification=1pIE7oxQFgbaSths1CckFlGEYBHxpp5pD9F_ZUCcSVA
- google-site-verification=BAzjINWd55GJVC7I66cdi0SXSLENbMENU9tqByphDmQ
- google-site-verification=M2VbalsxRQjMfelTnHdpgHIeqOKE6CYWnhj6VbGMFH8
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