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Total

DNS

Email

Security

100

Network

Availability

Domainlinode.com

IPv42

IPv62

MX records2

StatusActive

Domain technical report

The World's Most Distributed Cloud Computing Platform | Akamai

linode.com

Build and deliver low-latency, edge native applications on Akamai Connected Cloud.

Generated: 2026-08-09T02:29:08-05:00 · Cached result

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IPv42

IPv62

MX2

NS6

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

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 policy0 / 5 pts · Dns

Certificate authority restriction.

DNS propagation0 / 10 pts · Dns

Agreement between public resolvers.

✓

MX records20 / 20 pts · Mail

2 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

29 day(s) remaining.

Certificate lifetime6 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers4 / 35 pts · Security

1 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: a23-54-76-150.deploy.static.akamaitechnologies.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 response0 / 40 pts · Availability

HTTP/1.1 403 Forbidden

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

2 record(s)

23.54.76.150
23.54.76.140

AAAA

2 record(s)

2600:1407:7400:5f::17d1:5ef1
2600:1407:7400:5f::17d1:5ee6

CNAME

0 record(s)

—

Not configured

MX

2 record(s)

10 mxa-00190b01.gslb.pphosted.com.
10 mxb-00190b01.gslb.pphosted.com.

TXT

10 record(s)

"smartsheet-site-validation=8ft-lsEKUr2E2GS-WYZeQWn934ECdlgu"
"MS=ms97506004"
"google-site-verification=pUYBl3BO8G5rgQrfHoQDxfu7HqKEcnGY7v20KYL0vNQ"
"v=spf1 a:outbound.mail.linode.com include:sendersv4b.mail.linode.com include:_spf.google.com include:mktomail.com include:spf-009e7401.pphosted.com" " ip4:52.71.30.102 ip4:97.107.141.36 ip6:2600:3c03::f03c:91ff:fe6e:fda0 ip4:66.175.208.40 ip6:2600:3c03:e000:af2::1" " ip4:173.255.198.11 ip4:66.175.211.242 ip6:2600:3c00:e000:07e9::1 ip6:2600:3c03:e000:bfc::1" " ip4:67.231.149.131 ip4:67.231.157.127 ip6:2620:100:9001:583::1 ip6:2620:100:9005:57f::1 -all"
"1password-site-verification=XG272XO7HRFGBCO7BHRE55R6ME"
"b9vnqzyfsl9dkjxtlp39xz1pn6qnmnsc"
"MS=ms93951359"
"dtm-domain-verification=YkO_GJYRE_W_o9DSThOI34Yy6aHLITePNr-3zaVl_H4"
"google-site-verification=MKjylAJoYaAgAUs3p_fqq-Ni_It6Aj2AyS1sIEi0Ei4"
"google-site-verification=H-BI4P6tXdj3SCxfVfiJQbxX3p94r8_SXuGTkndOybI"

NS

6 record(s)

a1-249.akam.net.
a7-65.akam.net.
a3-67.akam.net.
a16-64.akam.net.
a12-65.akam.net.
a4-64.akam.net.

SOA

1 record(s)

a1-249.akam.net. dns.linode.com. 2026080914 4200 3600 2419200 86400

SPF

Configured

v=spf1 a:outbound.mail.linode.com include:sendersv4b.mail.linode.com include:_spf.google.com include:mktomail.com include:spf-009e7401.pphosted.com ip4:52.71.30.102 ip4:97.107.141.36 ip6:2600:3c03::f03c:91ff:fe6e:fda0 ip4:66.175.208.40 ip6:2600:3c03:e000:af2::1 ip4:173.255.198.11 ip4:66.175.211.242 ip6:2600:3c00:e000:07e9::1 ip6:2600:3c03:e000:bfc::1 ip4:67.231.149.131 ip4:67.231.157.127 ip6:2620:100:9001:583::1 ip6:2620:100:9005:57f::1 -all

DMARC

Configured

v=DMARC1; p=reject; sp=quarantine; pct=100; rua=mailto:813b13d662ad87bb7b1b73ca4a1da967-d@dmarc.report-uri.com

DKIM

Selector k1

v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAolBbm4WsZM/NwpjdOrKqG5pjqEP9fYXNFizaCa5OZEWyW4Wm0bzBWzbn36gVfcz5qTjGVfh5YVLvJ8172fRd7+eueydc9dB/zrXynaxdsWnERuSMdiYSErG/cIae0uYNOV/h7fJ+v5bsKSAWxY2oQ/MEALODwY/+f3oA6IZYZIrDUZm36BA2UHR9TM/QiJ0cWk3uD3bRbH9bDAOn7N30LDetepmnFBAY4Jx8BvzMO0WP9lxZRC74tVhRNkXMvn5xCGgAfCpoZD4wyn16WPtiVSJRbbPFDTnLs5yKJfSYiETVPSJxAwtpnngHQmtjgKeFvukzk5LVlLexEe0fxzB9+QIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

The World's Most Distributed Cloud Computing Platform | Akamai

Description

Build and deliver low-latency, edge native applications on Akamai Connected Cloud.

Final URL

https://www.linode.com/

HTTP status

200

HTTP

Status

HTTP/1.1 403 Forbidden

Final URL

https://linode.com/

Version

Server

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Let's Encrypt

www.linode.com

Valid from

2026-06-09T13:51:01-05:00

Valid until

2026-09-07T13:51:00-05:00

Days remaining

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

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

Review

Differences detected

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

23.54.76.140, 23.54.76.150

55,23 ms

Cloudflare

1.1.1.1

23.64.114.11, 23.64.114.14

54,22 ms

Quad9

9.9.9.9

23.222.241.57, 23.222.241.58

56,12 ms

OpenDNS

208.67.222.222

23.54.76.140, 23.54.76.150

37,29 ms

AdGuard

94.140.14.14

23.44.111.31, 23.44.111.38

65,87 ms

IP, geolocation and ASNAssociated network information

23.54.76.150

No data

success

country

region

city

asn

organization

isp

23.54.76.140

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

mxa-00190b01.gslb.pphosted.com

Port 25: Closed/unreachable - 28.2 ms - 
Port 465: Closed/unreachable - 21.5 ms - 
Port 587: Closed/unreachable - 70.7 ms -

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