Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
khanacademy.org
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 03:00:40 UTC · ↺ Refresh
MX Hostnames
- alt2.aspmx.l.google.com
- aspmx3.googlemail.com
- aspmx2.googlemail.com
- alt1.aspmx.l.google.com
- aspmx.l.google.com
MX Priorities
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
- aspmx2.googlemail.com: 10
- aspmx3.googlemail.com: 10
- alt1.aspmx.l.google.com: 5
A / AAAA Records
- 108.139.47.84 ↩ server-108-139-47-84.jfk50.r.cloudfront.net
- 108.139.47.35 ↩ server-108-139-47-35.jfk50.r.cloudfront.net
- 108.139.47.109
- 108.139.47.26
Mail Server IPs
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 142.251.16.26 ↩ bl-in-f26.1e100.net
- 2607:f8b0:4004:c09::1a ↩ bh-in-f26.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
SOA Record
Raw SOA
ns-1664.awsdns-16.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1664.awsdns-16.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1489.awsdns-58.org
ns-1664.awsdns-16.co.uk
ns-798.awsdns-35.net
ns-125.awsdns-15.com
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.google.com include:sendgrid.net include:aspmx.sailthru.com include:mail.zendesk.com exists:%{i}._spf.mta.salesforce.com include:mg-spf.greenhouse.io -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
✓ Public key: 216 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
24 records- cursor-domain-verification-dc9ngn=XEN4zLZD2K4p5yMB2JFUNxGIk
- _globalsign-domain-verification=Prrz12gznJzJiHaajX3CnPfpqK6hhLae0miMSZ_BGa
- google-site-verification=y1w1HGdtmQcg92Uy4JtubYkFtDDshCwmDXTFCgjpr-Y
- spf2.0/pra include:_spf.google.com include:sendgrid.net include:aspmx.sailthru.com -all
- _globalsign-domain-verification=Ca9ol7KyPTrPtyGjL1BqGx_wv6SymozDmCXhHJveUr
- google-site-verification=sHrvDlgokhtbjBWsn8Dhu616EFRRv8GD0C1AU4_1gl4
- yahoo-verification-key=h5B5VELNOFcyiRDJQWEiNChg+SeClI9Bk9k9daiRPR4=
- globalsign-domain-verification=qV_5Us2mt6FO1Ig5hnG4kYHESYAxuH5-qZ0cRXC-Ig
- canva-site-verification=JW5MeXNqA7ezvjIRgLOPaQ
- google-site-verification=7kTMmLFa8kfzTFffAv659zZAhSvDX5lqnB_yuST-xLY
- botify-site-verification=sGRcFNKzIkHzx1jtsQ7YkiT8hgWB6RiU
- openai-domain-verification=dv-E4EGw5ZIgYd9B3mwA3dPV5zY
- _globalsign-domain-verification=e70UZqvudGByIeilV8oO0gubBZi0P7QLakTxKub-zS
- MS=ms10049948
- anthropic-domain-verification-4va7p1=Uuz4j8MkpGFjBjYBqvNGNuK46
- cl_verification=a568671a-6112-4bc5-997d-1f06d8389b2e
- onetrust-domain-verification=4bc2331ed4d24c81b7be278e6e1fb58b
- facebook-domain-verification=8kvuco8ljlv8t1aedswjypctrp1pk3
- apple-domain-verification=FBF7Yx9o3htFHZ7m
- SPFv=spf1 include:_spf.google.com include:sendgrid.net include:aspmx.sailthru.com include:mail.zendesk.com exists:%{i}._spf.mta.salesforce.com include:mg-spf.greenhouse.io -all
- google-site-verification=SprWzGYoIdXdFrUCSyBhXJtHzFjE8FAQNlTamgKenhU
- hibp-verify=dweb_9nibj6s7woei7t5h43qd3yni
- google-site-verification=JML6gcy7DbE1dA3JB9W4O6EB9uQ8bpOlJTyniVCgd-o
- google-site-verification=Jiabx8hC-zV0E8-hAj40dHCY_oWNIvfqkNe7VFnGbCs
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