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75
Total
70
DNS
90
Email
69
Security
100
Network
60
Availability
Domaintui.co.uk
IPv42
IPv62
MX records1
StatusActive
Domain technical report

Access Denied

tui.co.uk

Generated: 2026-08-10T20:58:22-05:00 · Cached result

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IPv42
IPv62
MX1
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 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

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-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

175 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: a23-47-72-16.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/2 403

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

2 record(s)
23.47.72.16
23.47.72.19

AAAA

2 record(s)
2600:1407:3c00:cc::172d:2ec6
2600:1407:3c00:cc::172d:2ec9

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
10 tui-co-uk.mail.protection.outlook.com.

TXT

30 record(s)
"google-gws-recovery-domain-verification=53570873"
"airtable-verification=8d1e3b312949eac94497888ffe7aa2bc"
"MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC29xVAOSbOiuj0htmFukRPv3N5ZkCpGYHDL9AMbYrVUYvg+aK38l8HUjQTptl3EBnmX4/2MZ8kbr2GL8AXqnQLXKxpVx/YGdgmR9gclfkaq3xNInjrUEpAJE4jdB1RXKSbJvVs/rJzp2ITMWJpro3+OaIMs0dmw4nk6fVKTN5vkwIDAQAB"
"teamviewer-sso-verification=d0e7909907964050a1bd4b7067a925d9"
"docusign=d63ceee1-643e-4320-a9f1-9d01a4784bf6"
"google-site-verification=xO_2StpKs6TjtV2JLzjvPKDZeqIV94cUVfH1kHJC5dE"
"hjv2n9dtpsw6z3jl3whmcg8b64klzqjs"
"mjxdy37tt9TUv7UHhF5Q5nS3j6PzTwNozzQUxLfoyOBhlOXWzGG3oCzHcuvgm36ebYQ+jKOMzRGMrdhohnTGPg=="
"_6fjwib2houm3aaapeyyqm7dj0n78ngr"
"https://tui.atlassian.net/browse/WDOSRE-3491"
"_1c1hd5gaxdq2bgetu0802e64vm0etxc"
"_mfla0nt9bmqj7clg0iy4mfhcu9cugwk"
"apple-domain-verification=R6SlvNuv09seBJED"
"google-gws-recovery-domain-verification=48130770"
"s4GZEMPgCVHDhet7jYWe"
"google-site-verification=FNup-C5iiH_LD88iFKUuH8ZODeTTN_OVidARquwK2P8"
"MS=ms94998836"
"miro-verification=19616033581ca8585181da321ac5356c3758cec8"
"_n76bzvfu3qhs1yfdjgvdmlyblofdh56"
"prowly-verification=ff153458a78e6ea858213b7f026ac94f9b7c95692fcbb8f4749e2af2175132af"
"_lmbe3o72i81cd0fl88i89wglkjks2wh"
"anthropic-domain-verification-v0s2w6=gTJhgLWEfy3a8HXiG53kAEcYZ"
"atlassian-domain-verification=R0oe1j5MVuzOqdKW4yS4wJmPYVBXwvWD38S4aubDDMd1ajs310cWJWYxGdEDvkUt"
"facebook-domain-verification=vd69ve2r9egjm73bcnthh957d5hijd"
"Validity-DomainVerification=KKM8L&UXeadls994H0M31oMRDQL5="
"atlassian-domain-verification=BEWaryJcTKKKN4y5DTRjGgVTy12n8Sb5CWSNUMjyZ1aut8P4dkknLfvTyLPPxsUB"
"amazonses:U/qUc2WkuuiXWsZRbDi+l9Xk5dAKOfnyybIc619B50Y="
"mgy93r40py96w65l8zkcvgxvz3mtpn2f"
"v=spf1 mx include:_spf.qemailserver.com mx:mail.tuigroup.com exists:%{i}.spf.itglondon.co.uk include:spf.protection.outlook.com include:amazonses.com ip4:62.48.75.199 ip4:129.41.167.85 ip4:129.41.167.86 ip4:129.41.76.136 ip4:129.41.76.137" " ip4:129.41.76.146 ip4:129.41.76.205 ip4:129.41.76.206 ip4:129.41.76.207 ip4:129.41.76.218 include:spf.mailjet.com include:_spf-dc12.sapsf.com include:_spf.salesforce.com -all"
"google-gws-recovery-domain-verification=52161197"

NS

2 record(s)
udns2.cscdns.uk.
udns1.cscdns.net.

SOA

1 record(s)
udns1.cscdns.net. premiumdns.support.neustar. 2019103531 28800 7200 604800 14400

CAA

0 record(s)
—

Not configured

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 mx include:_spf.qemailserver.com mx:mail.tuigroup.com exists:%{i}.spf.itglondon.co.uk include:spf.protection.outlook.com include:amazonses.com ip4:62.48.75.199 ip4:129.41.167.85 ip4:129.41.167.86 ip4:129.41.76.136 ip4:129.41.76.137 ip4:129.41.76.146 ip4:129.41.76.205 ip4:129.41.76.206 ip4:129.41.76.207 ip4:129.41.76.218 include:spf.mailjet.com include:_spf-dc12.sapsf.com include:_spf.salesforce.com -all

DMARC

Configured
v=DMARC1; p=none; pct=100; fo=1; ri=3600; rua=mailto:2256e681@inbox.ondmarc.com; ruf=mailto:2256e681@inbox.ondmarc.com;

DKIM

Selector selector1
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyncTQpZXOX351zCXz3f+j3aYMP99/b18aRGtqQ0t8UMFuGL7Dx7yxjjjTgNvyCbQ+MqkjrGXtPoyAq6jeDo1txCTWTi40COkjF072+6tmJzrsKKQ3JExGckXY8yGrl0AlJDT72t9/eYYlzlZFWnQwVE1RZvpNliKpKV8c+8Jq8fWD7axu+sO754qRprY4jFSXoth8tfV9ryr+EJjaSfDmP1pWkzJV+j13lcTLc3BB6r0TCbIP7qg9qZHwZV+OnRvZjCeuZL70ZcbHQ5IjDQ36buz2iRp2JzelwUx0q7/Tl+akRsDtcXj6rlY5L4wmj6J5ruY+5GEWB/AcudxbDCd7QIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Access Denied
Description
Final URL
https://tui.co.uk/
HTTP status
403

HTTP

Status
HTTP/2 403
Final URL
https://tui.co.uk/
Version
3
Server
AkamaiGHost
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
DigiCert Inc
CN
www.tui.co.uk
Valid from
2026-02-02T18:00:00-06:00
Valid until
2027-02-02T17:59:59-06:00
Days remaining
175
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
184.25.255.39, 184.25.255.50
58,39 ms
Cloudflare
1.1.1.1
23.47.72.16, 23.47.72.19
25,71 ms
Quad9
9.9.9.9
184.25.255.39, 184.25.255.50
72,89 ms
OpenDNS
208.67.222.222
23.206.172.54, 23.206.172.66
136,61 ms
AdGuard
94.140.14.14
23.48.224.196, 23.48.224.198
147,91 ms

IP, geolocation and ASNAssociated network information

23.47.72.16

No data
success
No
country
region
city
asn
organization
isp

23.47.72.19

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

tui-co-uk.mail.protection.outlook.com

Port 25: Closed/unreachable - 27.4 ms - 
Port 465: Closed/unreachable - 4017.7 ms - 
Port 587: Closed/unreachable - 4044.4 ms -

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