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Total

DNS

Email

Security

Network

Availability

Domainudemy.com

IPv42

IPv62

MX records7

StatusActive

Domain technical report

Just a moment...

udemy.com

Generated: 2026-08-08T18:43:54-05:00 · Cached result

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IPv42

IPv62

MX7

NS2

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

2 IPv4 address(es) detected.

✓

IPv6 (AAAA)10 / 10 pts · Dns

2 IPv6 address(es) detected.

✓

Name server redundancy20 / 20 pts · Dns

2 NS record(s); 2 or more required.

✓

SOA record10 / 10 pts · Dns

Authoritative zone record.

✓

DNSSEC chain15 / 15 pts · Dns

DS and DNSKEY detected.

CAA policy0 / 5 pts · Dns

Certificate authority restriction.

✓

DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓

MX records20 / 20 pts · Mail

7 MX record(s).

✓

SPF25 / 25 pts · Mail

SPF policy published.

✓

DMARC25 / 25 pts · Mail

DMARC policy published.

✓

DKIM20 / 20 pts · Mail

A DKIM selector was verified.

MTA-STS0 / 5 pts · Mail

Mail transport policy.

TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓

Valid TLS certificate55 / 55 pts · Security

82 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers31 / 35 pts · Security

8 of 9 evaluated headers detected.

PTR reverse DNS0 / 30 pts · Network

PTR not detected.

✓

IPv4 diversity35 / 35 pts · Network

Two or more IPv4 addresses receive full points.

✓

IPv6 connectivity35 / 35 pts · Network

AAAA availability.

✓

DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

HTTP response0 / 40 pts · Availability

HTTP/2 403

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

2 record(s)

104.16.142.237
104.16.143.237

AAAA

2 record(s)

2606:4700::6810:8eed
2606:4700::6810:8fed

CNAME

0 record(s)

—

Not configured

MX

7 record(s)

10 alt3.aspmx.l.google.com.
5 alt2.aspmx.l.google.com.
5 alt1.aspmx.l.google.com.
1 aspmx.l.google.com.
10 aspmx3.googlemail.com.
10 alt4.aspmx.l.google.com.
10 aspmx2.googlemail.com.

TXT

46 record(s)

"atlassian-domain-verification=YpSV2agr6k+w5lkm2ml8m8/N+xCTPcXjTKwDomeoJJTrgnmCoeRyXs/U576G4Cz2"
"cursor-domain-verification-pae8cg=8gFowcF4OpBSeYJTIw0GYPFvL"
"stripe-verification=8ad760d1d60c9bbd83b03ed7fe20a10682f7d65774aa9db13a0b524e51cefe2c"
"_nbghqs48lzt0emavhip5o2dyy5kb0xy"
"miro-verification=f165badb21a511b048a7f7a9fba3352c0db8b09b"
"canva-site-verification=Ng9bmmu7vJyWHYrTk_wUZw"
"stripe-verification=54fa1ebf13b6990c87e17caffc4829d9600d3bd0ca60b24e6bf9ae530baf37f3"
"stripe-verification=e2909d7f06f271e18ace56ef06db7b552e6692c312adfedaf6cea1a2e0d63125"
"google-site-verification=c7RTHsaBu_LU5KgIFuPCWa5yxuTrkOGYtKaYt85mrq8"
"globalsign-domain-verification=Bo6R5k9s2Zwdk5OoeybGk6L2EHx_oV1TqLgGiMR4IQ"
"google-site-verification=FZsUD-xuwip73XO7XfuX-4kDEY-_Qel0klHmmu6CB5k"
"citrix-verification-code=6b798901-86c6-452c-a3ea-ed718cab39bd"
"google-site-verification=Ca1sgMRin5VW1yxjUntivQ3-RySo8SmJcWR6zgFW_w0"
"google-site-verification=lKnsAORvM6iM1XErS9RH0TeVGG7VfTb5ST7PGx1AQ-w"
"cloudhealth=8d6a3d7f-ed91-4280-8422-b4b27b3dfcda"
"stripe-verification=a4f63d60cd50bfe9f3b2c2d8aa55bc596a98ab6e0f0f2e9d798c6939ece90b90"
"google-site-verification=mSmGycRVFusrCec4blSh608oUai-y0AumEuI3OlaGBo"
"google-site-verification=0Gl3_FzqmUkS2NHg_Wd5pmGiSmt_Jk4MVnaCiDbhDnY"
"google-site-verification=IKMJeRfamsooHAMaTQdFDaQ4MsfeW1Nr6F7DPDEkycg"
"openai-domain-verification=dv-ncbISx7kF83lZ69Xc97AoraD"
"stripe-verification=044c7ed24abd68184b0a86b00dbd47b87d1db3a5eb2ee132df5131bfc6fe29d1"
"_globalsign-domain-verification=oJsQtL3M8axaRGjlRJ4BstY+1TfWDryoeAouwRxay7A="
"stripe-verification=e006b01ab77ebbe2e6c509a4e2280540bfea979f8c49ed3efd225004aa2f6292"
"_globalsign-domain-verification=9UioyPO0_F2Epyd3gGV5_VklXzoibTukD_jkbZPw43"
"stripe-verification=5808adfa0c91e8dfe4ecd14f20c22ba0d54b6e8b71b23a5eada978511a246e1a"
"apple-domain-verification=MntOsncD5C5BxosV"
"docusign=206e891a-5b22-4d4c-9a10-85066ba89160"
"MS=ms39886121"
"google-site-verification=4E_wLzpH4XLGfUSem4QVA6mUpRJDjvZ03pG1jU56hNM"
"jamf-site-verification=L9yfsaaKM7FxdBtc5kWk6g"
"zero-path-domain-verification-6e9hdw=BtrY4vZKLJdp2XlFj1sE4FFVG"
"google-site-verification=ld8CL_RjIj_FPsIdElHPqkhOMJ8Rixk1y7-s0Opi-90"
"pendo-domain-verification=595ba9d5-03ac-4aee-b50f-168214b6a32a"
"onetrust-domain-verification=2a6df466515246c4a7c37104f55a82b8"
"adobe-idp-site-verification=e54c98a1c7f23b54b8ac4b7b75952259c173d7bfba731f72db60eb7ad4e63d97"
"v=spf1 include:_spf.google.com include:mktomail.com include:spf.mtasv.net include:mail.zendesk.com include:_spf.salesforce.com -all"
"globalsign-domain-verification=K9ZBZYNiNsNNOiaY2Tbjn-Bfe0dWwAwpstKoOOVJWO"
"apple-domain-verification=IEscmDl7jHBZDO_dBAG0xMjbBbPxomU_9rqwksKrNmk"
"stripe-verification=4d955ddab5b0fc6cf1931b41935e45f7997f3b13677532d11e6a90b58f5156aa"
"globalsign-domain-verification=fB1XzR_1Hvbw32pP6EbLFlB9r4pxcc86XOgA7B7DyV"
"twilio-domain-verification=8e64b1bb044ab98ebbd3638c1babb25a"
"atlassian-domain-verification=iztR9OQCHGIVBm5w5PmFPf1nTaqiOROSuNTF9Kv0idnfzCBmAsbfwGEF2aOK+yo4"
"loom-site-verification=f173ba1cc44648d0ac2bbd0919868a6b"
"docusign=d078f828-536c-4ce3-a867-b26ad811bb8a"
"prowly-verification=bebd281d32a3e1b8140345e1f876f82eff2ba617d782c6206e7c21fd9fdbd880"
"google-site-verification=RuYIvfeP5e2eBgQzIaky9XuiCkkrVE2KUBULndTtFE4"

NS

2 record(s)

anna.ns.cloudflare.com.
pete.ns.cloudflare.com.

SOA

1 record(s)

anna.ns.cloudflare.com. dns.cloudflare.com. 2411086729 10000 2400 604800 60

CAA

0 record(s)

—

Not configured

DS

1 record(s)

2371 13 2 013BC893C8BEA04CF6D9AD5037DAEEE28C2A9CB514327BBCB1CF1D4F FCD13FCB

DNSKEY

2 record(s)

257 3 13 mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+ KkxLbxILfDLUT0rAK9iUzy1L53eKGQ==
256 3 13 oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XNEZeqCYKD5ar0IRd8 KqXXFJkqmVfRvMGPmM1x8fGAa2XhSA==

RRSIG

0 record(s)

—

Not configured

NSEC

1 record(s)

\000.udemy.com. A NS SOA PTR HINFO MX TXT AAAA LOC SRV NAPTR CERT SSHFP RRSIG NSEC DNSKEY TLSA SMIMEA HIP CDS CDNSKEY OPENPGPKEY SVCB HTTPS URI CAA

NSEC3

0 record(s)

—

Not configured

SRV

0 record(s)

—

Not configured

NAPTR

0 record(s)

—

Not configured

TLSA

0 record(s)

—

Not configured

SSHFP

0 record(s)

—

Not configured

SPF

Configured

v=spf1 include:_spf.google.com include:mktomail.com include:spf.mtasv.net include:mail.zendesk.com include:_spf.salesforce.com -all

DMARC

Configured

v=DMARC1; p=reject; rua=mailto:dmarc-udemy@udemy.com; ruf=mailto:dmarc-udemy@udemy.com; rf=afrf; fo=1; pct=100

DKIM

Selector default

v=DKIM1; k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCw3p2yXg38Y2d/0oi7+aIudl5F2Qktxp/Nceexu1i8V91Pty7XvLS9H2w/SqcxZIAYgL5pJBgUwm7vkfszkk9Q86Mx97hFCTzsUwozDkSoMYoxCzrFZhHuk5Fd/TDpe6sJ8kKiIZZ1ugyeHLmq0C/xX9VOyE0GR5AbtttxHYNFpQIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Just a moment...

Description

Final URL

https://udemy.com/

HTTP status

403

HTTP

Status

HTTP/2 403

Final URL

https://udemy.com/

Version

Server

cloudflare

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Let's Encrypt

udemy.com

Valid from

2026-08-01T10:18:32-05:00

Valid until

2026-10-30T10:18:31-05:00

Days remaining

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

Security headers

8 active

—

HSTSNot detected

✓

Content Security PolicyImplemented

✓

X-Content-Type-OptionsImplemented

✓

X-Frame-OptionsImplemented

✓

Referrer PolicyImplemented

✓

Permissions PolicyImplemented

✓

Cross-Origin-Opener-PolicyImplemented

✓

Cross-Origin-Embedder-PolicyImplemented

✓

Cross-Origin-Resource-PolicyImplemented

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent

✓

Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

104.16.142.237, 104.16.143.237

67,18 ms

Cloudflare

1.1.1.1

104.16.142.237, 104.16.143.237

43,56 ms

Quad9

9.9.9.9

104.16.142.237, 104.16.143.237

42,17 ms

OpenDNS

208.67.222.222

104.16.142.237, 104.16.143.237

49,00 ms

AdGuard

94.140.14.14

104.16.142.237, 104.16.143.237

47,73 ms

IP, geolocation and ASNAssociated network information

104.16.142.237

No data

success

country

region

city

asn

organization

isp

104.16.143.237

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

alt3.aspmx.l.google.com

Port 25: Closed/unreachable - 1.3 ms - 
Port 465: Closed/unreachable - 4017.5 ms - 
Port 587: Closed/unreachable - 4012.9 ms -

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