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88
Total
85
DNS
100
Email
69
Security
100
Network
100
Availability
Domainintechopen.com
IPv42
IPv62
MX records1
StatusActive
Domain technical report

IntechOpen - Open Science Open Minds | IntechOpen

intechopen.com

IntechOpen is a leading global publisher of Journals and Books within the fields of Science, Technology and Medicine. We are the preferred choice of over 60,000 authors worldwide.

Generated: 2026-08-09T01:11:08-05:00 · Cached result

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IPv42
IPv62
MX1
NS4

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

4 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

1 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-STS5 / 5 pts · Mail

Mail transport policy.

✓
TLS-RPT5 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

69 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers4 / 35 pts · Security

1 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: ec2-98-89-116-103.compute-1.amazonaws.com

✓
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 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

2 record(s)
98.89.116.103
34.197.141.164

AAAA

2 record(s)
2600:1f18:256f:5310:88b0:938c:a2b9:d43a
2600:1f18:256f:5300:c24f:4f59:7a9:c8c4

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
1 smtp.google.com.

TXT

7 record(s)
"google-site-verification=3bIARpYt3JA9siZCzn7K4jKuK4v0VYqKajsrVeaoyjU"
"google-site-verification=Bat30w9hE0Lv45Ee_wEEix-4OH7LsX8UGUmXRVvInWY"
"v=spf1 a:publish.intechopen.com include:_spf.google.com include:_spf.salesforce.com include:_spf.psm.knowbe4.com include:sendgrid.net -all"
"firebase=intechopen-4d333"
"Validity-Domain-Verification=hygge20FKQN28X+/UkkIOXhBaII="
"google-site-verification=zgR05Y9ls_g_8JqdHRyhy0a-zqr33kh7e9wWIb5tZ-I"
"google-site-verification=RCtlP8bS4qdqKDFI9I1CNFRKm0rFmyodx6IpPSKhwuY"

NS

4 record(s)
ns-1354.awsdns-41.org.
ns-124.awsdns-15.com.
ns-869.awsdns-44.net.
ns-1760.awsdns-28.co.uk.

SOA

1 record(s)
ns-124.awsdns-15.com. awsdns-hostmaster.amazon.com. 2024100700 7200 900 1209600 86400

CAA

16 record(s)
0 issue "amazontrust.com"
0 issuewild "amazontrust.com"
0 issue "amazonaws.com"
0 issue "letsencrypt.org"
0 issuewild "awstrust.com"
0 iodef "mailto:webmaster@intechopen.com"
0 issuewild "letsencrypt.org"
0 issue "amazon.com"
0 issuewild "comodoca.com"
128 issuemail "sectigo.com"
0 issuewild "sectigo.com"
0 issue "awstrust.com"
0 issuewild "amazonaws.com"
0 issue "sectigo.com"
0 issue "comodoca.com"
0 issuewild "amazon.com"

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 a:publish.intechopen.com include:_spf.google.com include:_spf.salesforce.com include:_spf.psm.knowbe4.com include:sendgrid.net -all

DMARC

Configured
v=DMARC1;p=reject;sp=reject;adkim=r;aspf=r;rua=mailto:dmarc-reports@intechopen.com,mailto:re+175046e4121e@inbound.dmarcdigests.com;ruf=mailto:dmarc-reports@intechopen.com

DKIM

Selector google
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnZ5HQoB4B7+Xg8gHbSl2MRlEkRvyhmoyZjiC8TNaSGhRyPlIL4P9K6VM7tTDxsmyv6As86Bs4kl4C0SB368UFzukX236euwSdw1GW53l7CWVtvT3Kn2EW17BYK6I3NVPFNZirxtAJznJS5tGf7Ow9XoOdvBJxoTXDvFA2fn4hOfrCeB5C04mBIQwu9+GTwhIZOqpmwWB2EknjCkFlRGohsDq2b3QwKCnZBYjp74ZM7OEBMKNANcSme8qwOahLlx9nrxRkWiAC2aOPI5kbxHMYzhYao7J7sE7dPfVRgNirwHg0e+FwaKKeKfIZ+7AO+3XvANipyrGpiQB9kZLzsK1ewIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
IntechOpen - Open Science Open Minds | IntechOpen
Description
IntechOpen is a leading global publisher of Journals and Books within the fields of Science, Technology and Medicine. We are the preferred choice of over 60,000 authors worldwide.
Final URL
https://www.intechopen.com:443/
HTTP status
206

HTTP

Status
HTTP/2 200
Final URL
https://www.intechopen.com:443/
Version
3
Server
nginx
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Sectigo Limited
CN
*.intechopen.com
Valid from
2026-04-01T19:00:00-05:00
Valid until
2026-10-17T18:59:59-05:00
Days remaining
69
Protocol
TLSv1.2
Cipher
ECDHE-RSA-AES128-GCM-SHA256

Security headers

1 active
✓
HSTSImplemented
—
Content Security PolicyNot detected
—
X-Content-Type-OptionsNot detected
—
X-Frame-OptionsNot detected
—
Referrer PolicyNot detected
—
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
34.197.141.164, 98.89.116.103
34,29 ms
Cloudflare
1.1.1.1
34.197.141.164, 98.89.116.103
32,55 ms
Quad9
9.9.9.9
34.197.141.164, 98.89.116.103
51,48 ms
OpenDNS
208.67.222.222
34.197.141.164, 98.89.116.103
125,96 ms
AdGuard
94.140.14.14
34.197.141.164, 98.89.116.103
137,80 ms

IP, geolocation and ASNAssociated network information

98.89.116.103

No data
success
No
country
region
city
asn
organization
isp

34.197.141.164

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No

SMTPEmail port connectivity

smtp.google.com

Port 25: Closed/unreachable - 45 ms - 220 mx.google.com ESMTP 46e09a7af769-7f35b7a6df3si5521530a34.88 - gsmtp
Port 465: Closed/unreachable - 4039.7 ms - 
Port 587: Closed/unreachable - 4021.2 ms -

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