DNS Report: coursera.org

Generated: 2026-08-08T18:10:35-05:00

79/100

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.
ERRORCAA policy0/5Certificate authority restriction.
ERRORDNS propagation0/10Agreement 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.
OKPTR reverse DNS30/30PTR: server-108-156-91-125.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
108.156.91.125
108.156.91.23
108.156.91.129
108.156.91.81
AAAA
CNAME
MX
30 aspmx4.googlemail.com.
20 alt1.aspmx.l.google.com.
20 alt2.aspmx.l.google.com.
10 aspmx.l.google.com.
30 aspmx2.googlemail.com.
30 aspmx5.googlemail.com.
30 aspmx3.googlemail.com.
TXT
"google-site-verification=PDgfi1HUgagq2NZOh86B3PpGnjDyNXdUr9iyWzDjONM"
"MS=ms91657421"
"google-site-verification=BbSjFsQN-aTkQDOiar6q3O4fPzSlgepoOdM3fMuCXFA"
"v=spf1 include:sendgrid.net ip4:24.6.102.21 ip4:50.16.53.44 include:_spf.google.com include:amazonses.com include:spf.mtasv.net include:_spf.salesforce.com -all"
"openai-domain-verification=dv-ykQklEbL6szace8vG1l7ejkQ"
"jamf-site-verification=Q2xELHJlL4PRcETKdUHldQ"
"jamf-site-verification=AmVhIhwqDzkoVxg_B0K81w"
"google-site-verification=874wxzrE4FAJO81XTCXyH6WYnWZAMdlbMRXI3lfI0bw"
"google-site-verification=UGpuPtZLCcMKFmgAeN4q6EbvxJn56A8Jz0sgW3yVKmA"
"canva-site-verification=m3eGQL4tz88BqXJO92JRpw"
"cisco-ci-domain-verification=5b418d2526e560d4ec96988886c86e7930c6936b68215183295356a4e4bf36d7"
"google-site-verification=l-IugqqOHDGlHpUHfv3e6z8J1koLgfGSem04lqBA_B8"
"stripe-verification=0f6967e13ea84d76953d1c3f2dc9eb80e82f090fff99161cd2fa957f55a71d60"
"paloaltonetworks-site-verification=3d8b8eeec8974a6c2b181f7decddc8a96d9cbdcb8f39e4923c53d477a96f6d37"
"rzp-site-verification=0e1f055c2e81430150efedded50e7992"
"376174617-10056694"
"anthropic-domain-verification-r913z0=qHfIpP1D8b5nWxj2rpstnqRZ1"
"stripe-verification=34fd6b74183c244d59d572c162e5b77fe6eed5e5205296151f49dda7b68670eb"
"spf2.0/pra include:amazonses.com include:sendgrid.net include:_spf.google.com include:spf.mtasv.net -all"
"apple-domain-verification=8gxy28dzSlSOYkUI"
"onetrust-domain-verification=bc353cda9f49402e8b2ac8a3b3e86286"
"google-site-verification=fFsckLsIOub_171zkeWLBQ72SvjwGSPsz209wwTtmX4"
"BthfBdp8W7Bqmm87eNGy"
"google-site-verification=tbpsWy5oBEvo-Kod36Lqsb3qRK0h_divcCGAeUdVZlk"
"atlassian-domain-verification=pwnyCbGEmC6E08lYJGO/SYkQvbjFS+OXy03eVMG75U52Edj0vbZGBjdaorxh+PUE"
"elevenlabs=iuq-HrTSPpSbgooOeznbfY9bR-awTAYggzjFxD0Q6Rw"
"hubspot-domain-verification=ZTM1ZDk4NGEtNWU5Ny00NDJiLWIwNTQtZTA1NGJhZmU3MzZh"
"google-site-verification=H2oN7Mv4QCzOClwXz1j30f-4544byEDxyEk0o3eluE0"
"google-site-verification=61uiBFuqY-MYJHWt_8qbU00Rsn7Nq_njU5eMUG0NlrY"
"atlassian-domain-verification=iztR9OQCHGIVBm5w5PmFPf1nTaqiOROSuNTF9Kv0idnfzCBmAsbfwGEF2aOK+yo4"
"yandex-verification: 7472d03e746e191a"
"docker-verification=6792a290-383f-4d78-9f9b-71f46df7b6b2"
"zoom-domain-verification=6fb6c268-238e-477b-ba40-2f0164695cd7"
"google-site-verification=nLfEbuY6OaO0lfas7ywHqpPnOMnobNONSJ0hnbJO9co"
"facebook-domain-verification=46dep9ql4m6it0wahwkhiou7xit57h"
"miro-verification=d5e807f40d602cde4051496eaaa95234e158ada0"
"lovable_verification=01oL6h2mkM0xtkXhCoKq"
"docusign=05d7ee1b-a029-4b94-912a-25bb3c4a2bed"
"stripe-verification=95449f6ae01b02ef7f65b59ee2f3ed14bac52c49aaa1519e57b864b70baede3a"
"cursor-domain-verification-kg2va5=P61NAJ77jH4Kuavd9jaD3I4Bw"
"google-site-verification=L8lg2XWlLydULXIxANaXcbkcCg3UGYGMRp8y0wi8aXs"
NS
ns-1590.awsdns-06.co.uk.
ns-258.awsdns-32.com.
ns-688.awsdns-22.net.
ns-1481.awsdns-57.org.
SOA
ns-1590.awsdns-06.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
CAA
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP