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Total

DNS

Email

Security

Network

100

Availability

Domainoreilly.com

IPv41

IPv60

MX records5

StatusActive

Domain technical report

O'Reilly Media - Technology and Business Training

oreilly.com

Build the skills your teams need. Give them the O'Reilly learning platform and equip them with the resources that drive business outcomes.

Generated: 2026-08-08T18:15:23-05:00 · Cached result

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IPv41

IPv60

MX5

NS6

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓

Name server redundancy20 / 20 pts · Dns

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

✓

SOA record10 / 10 pts · Dns

Authoritative zone record.

DNSSEC chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

✓

CAA policy5 / 5 pts · Dns

Certificate authority restriction.

✓

DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓

MX records20 / 20 pts · Mail

5 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

39 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers19 / 35 pts · Security

5 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: 167.83.169.34.bc.googleusercontent.com

IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

IPv6 connectivity0 / 35 pts · Network

AAAA availability.

✓

DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓

HTTP response40 / 40 pts · Availability

HTTP/2 200

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)

34.169.83.167

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

5 record(s)

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

TXT

40 record(s)

"onetrust-domain-verification=ae63e0829f794f8eaa9d46794a8e6073"
"stripe-verification=f9c7baf61f54571ffe67b1c557dea5380c1afd51153b97ca71724438405f855b"
"cloudhealth=45f9c4a4-d1eb-4252-b4a1-7d7bb9004040"
"_acme-challenge.omg.oreilly.com.=70A5bqLKoqpSLcGV6WvAQdrNND1WibK55qbSBMsvOjM"
"d7kfp9gbnkkvp5vvphuv80s4oc"
"globalsign-domain-verification=aei6eSS-1p0PqmZ3x4jXFoJt_7l6MenGY6u2FV45qG"
"google-site-verification=neBJBV38v3xXAew00QEe1whxoBx-y0oo0-9840fBTek"
"_figma_sites_verify_customersuccess"
"MS=E75517AC6D8C7C76D0C87E3CF6ABD5F68B91610C"
"_c5xkp6qqlmxx3yajtdb4hqhz82rsazn"
"apple-domain-verification=CObFhoTOkqx87oIs"
"MS=ms79198677"
"calendly-site-verification=KRdabjWvHMSpj0d7HZ7WgAZXIGkbywfZWqJCGrIYd"
"OczFEA1OJs6vDuh7lvXFAcHDrCMg0Bgq35GaGBcrZqs"
"v=spf1 include:_spf.google.com include:amazonses.com include:spf.mandrillapp.com include:spf.mtasv.net include:mktomail.com include:_spf.salesforce.com ip4:199.27.144.40 ip4:199.83.45.18 ip4:199.83.45.19 ip4:199.83.45.110 ip4:199.83.45.111 " "ip4:199.83.47.124 ip4:199.83.47.125 ip4:162.42.207.20 ip4:208.76.31.37 ip4:162.42.214.212 ip4:104.192.140.117 ip4:72.18.192.0/24 ip4:66.179.217.0/26 ip4:173.209.243.64/26 -all"
"docker-verification=993bde06-01c2-4c04-a1c6-d840bddb0611"
"1password-site-verification=YL4MABUTMFAGTAOZTL6TFWZWBU"
"adobe-idp-site-verification=ad56f341-bb17-4470-8efa-9a9b9c121a4a"
"airtable-verification=1f9f5306621f76be14eb5cde11661c2d"
"m7zd1crqvftqsgdf8v889l9zdqhk3p07"
"openai-domain-verification=dv-ZU9jzgezaEHhPW3jhinsYiGi"
"logmein-verification-code=35fc191f-9043-4216-8bf4-88a05c9e8768"
"pardot1009792=4c05d6fbc27aa34baa25bd9d175c4f3be8941b4c77ce5fba6e78022fdfe194fb"
"zapier-domain-verification-challenge=6257ac03-13a2-49f0-bf05-cff1cac20573"
"BlueXPf24d34d4-6c8c-4419-b3be-53abc864b788"
"1g9d3pyyw5xdhpty461591rx8qtp6y6z"
"MS=ms43057904"
"sophos-domain-verification=2ec763c10efd73f2c1dbceaad2983ea0093f02a5882445675f0885ffcf6ce608"
"_acme-challenge.get.oreilly.com. =L56-9KXCPqPkf5v8bwnTyDjY0p91zvmSsY3mpZ9NmoU"
"openai-domain-verification=dv-p9JzdykFvVDoSGxyY4Y6Y143"
"oci-domain-verification=mwjZ7A40UhcYmctnsvlpDQ4zebV3j9jVCIAqGBSkx"
"atlassian-domain-verification=GJgQnpbhHf0SwculXnJahDb8IZbK2ZXhc5tVW2ZaEx1rCwyJAN6Mq3JwtfTn5X5s"
"rzp-site-verification=a854b4a8b6cd7bfd0c5ebe4edcf00c18"
"anthropic-domain-verification-dnrkbn=q9EUze0gStRgj4wmYfJUGB6V2"
"smartsheet-site-validation=fxm70bCfI2yjd4sAuYUP7eTOck334VGo"
"stripe-verification=FA0A5DF1B861B5632D3B866D38C3327CB0C01D0591C3FAE956610D4BC68DEA64"
"ZOOM_verify_t_KNmIKiQZKkyVMeJxpjnA"
"_yikoj59erdx9jd4sti8idhii7nvf9x2"
"google-site-verification=0QeIVzKsJaBLMuz3ZQ1rVpVCmumDKYRlvZ8fRExJ81Y"
"onetrust-domain-verification=54ccc7392b084e48acfcbc164e2a0ba6"

NS

6 record(s)

a1-225.akam.net.
a4-64.akam.net.
a16-65.akam.net.
a20-66.akam.net.
a13-64.akam.net.
a3-67.akam.net.

SOA

1 record(s)

a1-225.akam.net. nic-tc.oreilly.com. 2147484470 600 1800 5184000 3600

CAA

6 record(s)

0 issue "amazon.com"
0 issue "letsencrypt.org"
0 iodef "mailto:itops@oreilly.com"
0 issue "digicert.com"
0 issue "godaddy.com"
0 issue "pki.goog"

DS

0 record(s)

—

Not configured

DNSKEY

0 record(s)

—

Not configured

RRSIG

0 record(s)

—

Not configured

NSEC

0 record(s)

—

Not configured

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:amazonses.com include:spf.mandrillapp.com include:spf.mtasv.net include:mktomail.com include:_spf.salesforce.com ip4:199.27.144.40 ip4:199.83.45.18 ip4:199.83.45.19 ip4:199.83.45.110 ip4:199.83.45.111 ip4:199.83.47.124 ip4:199.83.47.125 ip4:162.42.207.20 ip4:208.76.31.37 ip4:162.42.214.212 ip4:104.192.140.117 ip4:72.18.192.0/24 ip4:66.179.217.0/26 ip4:173.209.243.64/26 -all

DMARC

Configured

v=DMARC1; p=quarantine; rua=mailto:dmarc@oreilly.com; ruf=mailto:dmarc@oreilly.com; pct=20; sp=none;

DKIM

Selector google

v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCAUijIlIU8kdRURDP/MxUL6vlfpa4ulw0c6xmkLryLRFeANu1XS6uthkkPjVD4L+NpAQ2Azr64E8XGMFWKKUjbuLt2wDtgsODKSFEyRfGTFbqmBJuEo7l2QuOxcMJYt4/DR4vM+1mz/Z50Z/5ZqGiPE1X0qgb3kzIeTy8B3C/N4wIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

O'Reilly Media - Technology and Business Training

Description

Build the skills your teams need. Give them the O'Reilly learning platform and equip them with the resources that drive business outcomes.

Final URL

https://www.oreilly.com/

HTTP status

206

HTTP

Status

HTTP/2 200

Final URL

https://www.oreilly.com/

Version

Server

Apache

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Let's Encrypt

misc3.oreilly.com

Valid from

2026-06-19T18:05:25-05:00

Valid until

2026-09-17T18:05:24-05:00

Days remaining

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

Security headers

5 active

✓

HSTSImplemented

✓

Content Security PolicyImplemented

✓

X-Content-Type-OptionsImplemented

✓

X-Frame-OptionsImplemented

✓

Referrer PolicyImplemented

—

Permissions PolicyNot detected

—

Cross-Origin-Opener-PolicyNot detected

—

Cross-Origin-Embedder-PolicyNot detected

—

Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent

✓

Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

34.169.83.167

73,09 ms

Cloudflare

1.1.1.1

34.169.83.167

65,29 ms

Quad9

9.9.9.9

34.169.83.167

72,87 ms

OpenDNS

208.67.222.222

34.169.83.167

33,25 ms

AdGuard

94.140.14.14

34.169.83.167

59,91 ms

IP, geolocation and ASNAssociated network information

34.169.83.167

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

aspmx2.googlemail.com

Port 25: Closed/unreachable - 23.2 ms - 
Port 465: Closed/unreachable - 4050.9 ms - 
Port 587: Closed/unreachable - 4043 ms -

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