DNS Report: khanacademy.org

Generated: 2026-08-08T19:17:03-05:00

77/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/304 IPv4 address(es) detected.
ERRORIPv6 (AAAA)0/100 IPv6 address(es) detected.
OKName server redundancy20/204 NS record(s); 2 or more required.
OKSOA record10/10Authoritative zone record.
ERRORDNSSEC chain0/15Both DS and DNSKEY are required.
OKCAA policy5/5Certificate authority restriction.
ERRORDNS propagation0/10Agreement between public resolvers.
OKMX records20/205 MX record(s).
OKSPF25/25SPF policy published.
OKDMARC25/25DMARC policy published.
OKDKIM20/20A DKIM selector was verified.
ERRORMTA-STS0/5Mail transport policy.
ERRORTLS-RPT0/5TLS reporting policy.
OKValid TLS certificate55/55123 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
ERRORHTTP security headers0/350 of 9 evaluated headers detected.
OKPTR reverse DNS30/30PTR: server-3-171-22-86.ord56.r.cloudfront.net
OKIPv4 diversity35/35Two or more IPv4 addresses receive full points.
ERRORIPv6 connectivity0/35AAAA availability.
OKDNS resolution40/40At least one address family must resolve.
OKHTTP response40/40HTTP/2 200
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
3.171.22.86
3.171.22.43
3.171.22.48
3.171.22.88
AAAA
CNAME
MX
1 aspmx.l.google.com.
5 alt2.aspmx.l.google.com.
10 aspmx2.googlemail.com.
10 aspmx3.googlemail.com.
5 alt1.aspmx.l.google.com.
TXT
"onetrust-domain-verification=4bc2331ed4d24c81b7be278e6e1fb58b"
"google-site-verification=SprWzGYoIdXdFrUCSyBhXJtHzFjE8FAQNlTamgKenhU"
"cl_verification=a568671a-6112-4bc5-997d-1f06d8389b2e"
"_globalsign-domain-verification=Prrz12gznJzJiHaajX3CnPfpqK6hhLae0miMSZ_BGa"
"MS=ms10049948"
"_globalsign-domain-verification=Ca9ol7KyPTrPtyGjL1BqGx_wv6SymozDmCXhHJveUr"
"google-site-verification=Jiabx8hC-zV0E8-hAj40dHCY_oWNIvfqkNe7VFnGbCs"
"stripe-verification=332820F9A5BCCCACBF2F5D8636496EB723C4062C9B878B8BAB77E99A2522E947"
"ZOOM_verify_G7FwqtyEKLkoQGhA3ifQq5"
"google-site-verification=sHrvDlgokhtbjBWsn8Dhu616EFRRv8GD0C1AU4_1gl4"
"apple-domain-verification=FBF7Yx9o3htFHZ7m"
"_globalsign-domain-verification=e70UZqvudGByIeilV8oO0gubBZi0P7QLakTxKub-zS"
"google-site-verification=BUF9CkP4-zm7sN2rDSq6NGRiEkrvvh2k3UdQxwSusrU"
"facebook-domain-verification=8kvuco8ljlv8t1aedswjypctrp1pk3"
"botify-site-verification=sGRcFNKzIkHzx1jtsQ7YkiT8hgWB6RiU"
"google-site-verification=JML6gcy7DbE1dA3JB9W4O6EB9uQ8bpOlJTyniVCgd-o"
"yahoo-verification-key=h5B5VELNOFcyiRDJQWEiNChg+SeClI9Bk9k9daiRPR4="
"cursor-domain-verification-dc9ngn=XEN4zLZD2K4p5yMB2JFUNxGIk"
"anthropic-domain-verification-4va7p1=Uuz4j8MkpGFjBjYBqvNGNuK46"
"google-site-verification=7kTMmLFa8kfzTFffAv659zZAhSvDX5lqnB_yuST-xLY"
"canva-site-verification=JW5MeXNqA7ezvjIRgLOPaQ"
"globalsign-domain-verification=qV_5Us2mt6FO1Ig5hnG4kYHESYAxuH5-qZ0cRXC-Ig"
"hibp-verify=dweb_9nibj6s7woei7t5h43qd3yni"
"google-site-verification=y1w1HGdtmQcg92Uy4JtubYkFtDDshCwmDXTFCgjpr-Y"
"spf2.0/pra include:_spf.google.com include:sendgrid.net include:aspmx.sailthru.com -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"
"openai-domain-verification=dv-E4EGw5ZIgYd9B3mwA3dPV5zY"
NS
ns-1489.awsdns-58.org.
ns-798.awsdns-35.net.
ns-125.awsdns-15.com.
ns-1664.awsdns-16.co.uk.
SOA
ns-1664.awsdns-16.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
CAA
0 issue "globalsign.com"
0 issue "godaddy.com"
0 issue "digicert.com"
0 issue "letsencrypt.org"
0 iodef "mailto:it@khanacademy.org"
0 issue "amazon.com"
0 issue "certainly.com"
0 issue "pki.goog"
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP