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63
Total
90
DNS
20
Email
69
Security
70
Network
60
Availability
Domainoutlook.office.com
IPv44
IPv64
MX records3
StatusActive
Domain technical report

Outlook

outlook.office.com

Generated: 2026-08-08T17:31:52-05:00 · Cached result

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IPv44
IPv64
MX3
NS4

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

4 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

4 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 chain15 / 15 pts · Dns

DS and DNSKEY detected.

✓
CAA policy5 / 5 pts · Dns

Certificate authority restriction.

!
DNS propagation0 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

3 MX record(s).

!
SPF0 / 25 pts · Mail

SPF policy not found.

!
DMARC0 / 25 pts · Mail

DMARC policy not found.

!
DKIM0 / 20 pts · Mail

No tested DKIM selector responded.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

155 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 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/2 417

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

8 record(s)
outlook.cloud.microsoft.
acdcatm.outlook.mira.tm.svc.cloud.microsoft.
outlook.ms-acdc.office.com.
MDW-efz.ms-acdc.office.com.
52.96.239.178
52.96.201.114
52.96.191.2
52.96.226.146

AAAA

8 record(s)
outlook.cloud.microsoft.
acdcatm.outlook.mira.tm.svc.cloud.microsoft.
outlook.ms-acdc.office.com.
MDW-efz.ms-acdc.office.com.
2603:1036:304:30af::2
2603:1036:304:2858::2
2603:1036:304:81c::2
2603:1036:304:2851::2

CNAME

1 record(s)
outlook.cloud.microsoft.

MX

3 record(s)
outlook.cloud.microsoft.
acdcatm.outlook.mira.tm.svc.cloud.microsoft.
atm.outlook.mira.tm.svc.cloud.microsoft.

TXT

4 record(s)
outlook.cloud.microsoft.
acdcatm.outlook.mira.tm.svc.cloud.microsoft.
outlook.ms-acdc.office.com.
MDW-efz.ms-acdc.office.com.

NS

4 record(s)
outlook.cloud.microsoft.
acdcatm.outlook.mira.tm.svc.cloud.microsoft.
outlook.ms-acdc.office.com.
MDW-efz.ms-acdc.office.com.

SOA

3 record(s)
outlook.cloud.microsoft.
acdcatm.outlook.mira.tm.svc.cloud.microsoft.
atm.outlook.mira.tm.svc.cloud.microsoft.

CAA

4 record(s)
outlook.cloud.microsoft.
acdcatm.outlook.mira.tm.svc.cloud.microsoft.
outlook.ms-acdc.office.com.
MDW-efz.ms-acdc.office.com.

DS

4 record(s)
outlook.cloud.microsoft.
acdcatm.outlook.mira.tm.svc.cloud.microsoft.
outlook.ms-acdc.office.com.
MDW-efz.ms-acdc.office.com.

DNSKEY

4 record(s)
outlook.cloud.microsoft.
acdcatm.outlook.mira.tm.svc.cloud.microsoft.
outlook.ms-acdc.office.com.
MDW-efz.ms-acdc.office.com.

RRSIG

1 record(s)
CNAME 13 3 60 20260809233113 20260807213113 7976 office.com. yYfNbehwlD7oogqR2owTF9+J0Nt6nvdUfJyMbXOblPWEPWLwWfo38Ib5 WY5SAr47z0KI00x/yVwM/KIxqDx5Hw==

NSEC

0 record(s)
—

Not configured

NSEC3

3 record(s)
outlook.cloud.microsoft.
acdcatm.outlook.mira.tm.svc.cloud.microsoft.
atm.outlook.mira.tm.svc.cloud.microsoft.

SRV

4 record(s)
outlook.cloud.microsoft.
acdcatm.outlook.mira.tm.svc.cloud.microsoft.
outlook.ms-acdc.office.com.
MDW-efz.ms-acdc.office.com.

NAPTR

4 record(s)
outlook.cloud.microsoft.
acdcatm.outlook.mira.tm.svc.cloud.microsoft.
outlook.ms-acdc.office.com.
MDW-efz.ms-acdc.office.com.

TLSA

3 record(s)
outlook.cloud.microsoft.
acdcatm.outlook.mira.tm.svc.cloud.microsoft.
atm.outlook.mira.tm.svc.cloud.microsoft.

SSHFP

4 record(s)
outlook.cloud.microsoft.
acdcatm.outlook.mira.tm.svc.cloud.microsoft.
outlook.ms-acdc.office.com.
MDW-efz.ms-acdc.office.com.

SPF

Not configured
—

Not configured

DMARC

Not configured
—

Not configured

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Outlook
Description
Final URL
https://outlook.office.com/mail/
HTTP status
200

HTTP

Status
HTTP/2 417
Final URL
https://outlook.office.com/mail/
Version
3
Server
Microsoft-HTTPAPI/2.0
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
DigiCert Inc
CN
outlook.com
Valid from
2026-06-25T19:00:00-05:00
Valid until
2027-01-10T17:59:59-06:00
Days remaining
155
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
52.96.157.130, 52.96.157.98, 52.96.164.178, 52.96.191.226, 52.96.223.2, 52.96.79.210, 52.96.79.226, 52.96.79.82
72,61 ms
Cloudflare
1.1.1.1
52.96.157.130, 52.96.157.162, 52.96.191.194, 52.96.191.210, 52.96.76.98, 52.96.79.146, 52.96.79.162, 52.96.79.34
18,66 ms
Quad9
9.9.9.9
52.96.157.162, 52.96.157.82, 52.96.191.242, 52.96.79.210
23,89 ms
OpenDNS
208.67.222.222
52.96.226.178, 52.96.79.162, 52.96.79.34, 52.96.79.98
25,00 ms
AdGuard
94.140.14.14
40.104.16.242, 40.104.46.2, 52.96.182.114, 52.96.88.50
40,62 ms

IP, geolocation and ASNAssociated network information

52.96.239.178

No data
success
No
country
region
city
asn
organization
isp

52.96.201.114

No data
success
No
country
region
city
asn
organization
isp

52.96.191.2

No data
success
No
country
region
city
asn
organization
isp

52.96.226.146

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

outlook.cloud.microsoft

Port 25: Closed/unreachable - 1.6 ms - 
Port 465: Closed/unreachable - 4008.8 ms - 
Port 587: Closed/unreachable - 9.3 ms - 220 CH2PR10CA0003.outlook.office365.com Microsoft ESMTP MAIL Service ready at Sat, 8 Aug 2026 22:31:51 +0000 [08DEF51608712B89]

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