DNS Report: coursehero.com

Generated: 2026-08-10T03:56:17-05:00

72/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/302 IPv4 address(es) detected.
ERRORIPv6 (AAAA)0/100 IPv6 address(es) detected.
OKName server redundancy20/202 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.
OKDNS propagation10/10Agreement between public resolvers.
OKMX records20/207 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 certificate55/5559 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
WARNINGHTTP security headers12/353 of 9 evaluated headers detected.
ERRORPTR reverse DNS0/30PTR not detected.
OKIPv4 diversity35/35Two or more IPv4 addresses receive full points.
ERRORIPv6 connectivity0/35AAAA availability.
OKDNS resolution40/40At least one address family must resolve.
ERRORHTTP response0/40HTTP/2 403
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
104.17.142.115
104.17.143.115
AAAA
CNAME
MX
5 alt1.aspmx.l.google.com.
10 aspmx2.googlemail.com.
10 alt3.aspmx.l.google.com.
5 alt2.aspmx.l.google.com.
10 alt4.aspmx.l.google.com.
1 aspmx.l.google.com.
10 aspmx3.googlemail.com.
TXT
"apple-domain-verification=J9HXwKKbosffcUqk"
"hzlh1s4kn3zrz66vng5sdxkc1fc5088m"
"google-site-verification=Gyhx5Lm9qP9uXBuUizeZ4rO-RyZBKZtClazCwKnDcek"
"globalsign-domain-verification=9AC94274374646C0309FBF52D4C347E5"
"ZOOM_verify_5AZchnB9Sbu3g5a7AT4-tQ"
"adobe-idp-site-verification=8b9b597326c953485203409a584c256ae5300d4628d2c614db42c35dbfc4d827"
"atlassian-domain-verification=HuZkEy3RvMSIX6gZ/iF9B/EYH1awgocgR2HXxCaOZLQhFSSaizLaV68WLJ67OdV5"
"beam-verification=ztlMjatDnztNkQvw8YU4sYwvBQQ6BpBswpmOGXUKrBHAnKhx"
"globalsign-domain-verification=2eaa5b27a77c2daddf7a4de4d1d0b631"
"_globalsign-domain-verification=vfSqdWg_oFkzJ2vuWdXgelF4hXGoMazrjSFpCwGkIr"
"cursor-domain-verification-mqkys8=xlPNXlbiVQnaxZlmsW9WuEsaz"
"globalsign-domain-verification=6f8ab1bf5972d1fec2bed8c50fc8f17f"
"globalsign-domain-verification=3C4ABCC9F5A84CF68ED95BDA94D6AA6F"
"5652918DDF"
"anthropic-domain-verification-pf9xw7=KfxDXaYmxfEGnWRVFqIufoEmc"
"google-site-verification=3pQ5xK_nyepze4YXPQl_B0s_ctK-MbTPs1wcsI4rtc0"
"globalsign-domain-verification=6I41XwGS3W3RH3qcFMFl4OEqtMzo9xTMeWN8-mrBax"
"miro-verification=cd41ffb512f978da767f4d40547aad9ce48ac4e2"
"globalsign-domain-verification=6902DC280BCC210C04267DF54E536CF3"
"globalsign-domain-verification=d02224fcdd31e8326ec4e62e02896e6e"
"notion-domain-verification=GFEyibYsGkk66J48iv0lbsClXxUjI4AuMhpkEVzsWdV"
"v=spf1 a mx include:_spf.google.com include:mail.zendesk.com include:amazonses.com include:sendgrid.net ip4:104.130.122.0/23 ip4:146.20.112.0/26 ip4:141.193.32.0/23 ip4:161.38.192.0/20 ip4:209.61.151.0/24 ip4:166.78.68.0/22 ip4:198.61.254.0/23 ip4:192.237" ".158.0/23 ip4:23.253.182.0/23 ip4:104.130.96.0/28 ip4:146.20.113.0/24 ip4:146.20.191.0/24 ip4:159.135.224.0/20 ip4:69.72.32.0/20 ip4:167.89.73.35 ip4:23.21.109.197 ip4:23.21.109.212 ip4:147.160.167.0/26 ip4:223.165.123.209 ip4:223.165.123.213 ip4:223.165." "123.92 ip4:223.165.123.205 ip4:223.165.124.173 ip4:223.165.123.209/32 ip4:223.165.123.213/32 ip4:223.165.123.92/32 ip4:223.165.123.205/32 ip4:223.165.124.173/32 ~all"
NS
ali.ns.cloudflare.com.
bob.ns.cloudflare.com.
SOA
ali.ns.cloudflare.com. dns.cloudflare.com. 2411390689 10000 2400 604800 1800
CAA
0 issue "letsencrypt.org"
0 issuewild "comodoca.com"
0 issue "godaddy.com"
0 issuewild "pki.goog; cansignhttpexchanges=yes"
0 issue "globalsign.com"
0 issue "ssl.com"
0 issue "amazontrust.com"
0 issue "digicert.com; cansignhttpexchanges=yes"
0 issuewild "globalsign.com"
0 issuewild "ssl.com"
0 issuewild "letsencrypt.org"
0 issue "pki.goog; cansignhttpexchanges=yes"
0 issuewild "digicert.com; cansignhttpexchanges=yes"
0 issuewild "godaddy.com"
0 issue "comodoca.com"
0 issuewild "amazontrust.com"
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP