Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ctt.pt
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 05:49:43 UTC · ↺ Refresh
MX Hostnames
- ctt-pt.mail.protection.outlook.com
MX Priorities
- ctt-pt.mail.protection.outlook.com: 0
A / AAAA Records
- 15.197.240.141 ↩ a359b44f5e93f44e3.awsglobalaccelerator.com
- 3.33.211.116 ↩ a359b44f5e93f44e3.awsglobalaccelerator.com
Mail Server IPs
- 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
- 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
- 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
SOA Record
Raw SOA
dns.ctt.pt dns.ctt.pt 2019232610 36000 3600 2419200 900
Primary NS (mname)
dns.ctt.pt
Admin Email (rname)
dns@ctt.pt
Serial
2019232610
Refresh
36000s
Retry
3600s
Expire
2419200s
Minimum TTL
900s
Nameservers (NS)
ns1.ctt.pt
ns2.ctt.pt
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:62.28.56.6 ip4:88.157.200.147 ip4:185.2.87.110 ip4:194.65.81.88/29 ip4:194.65.92.63 a:c.spf.service-now.com include:spf.protection.outlook.com include:5479587.spf03.hubspotemail.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
10 records- ethiack-verification=7f027221a19778f4af9e9034e56c96ca33562557baba5f4deda6f67e9ca715570d414951881bdac6e0435df341ac524e1793870bae958a08ca6e6d146ce360aa
- successfactors-site-verification=Yzk4YTU1Yzk5YWIxYzc2Y2QxMTBlNTUzZmNjNzBjMDE4Njc1NWUwZGQ1ZjQ2NDI1NjUzNWJiZjg4MmZkMTdhMg==
- teamviewer-sso-verification=d0c8fb2c32d04e7bb143373881ec34ee
- knowbe4-site-verification=b4add493698f5f894f6a3311952f3df1
- cisco-ci-domain-verification=6f386e3a23679416181b127c9d9628f13fbe2ed0ced5a87b165e09cf0c1af277
- 7+nDVFz4gnWlt7lYEZ8p0sYJpa9jvoLhcTHpIdcTsO3u8HvtY1lNzsU0XtQPq32rFElOovN2z3IfV8YqgxstWQ==
- apple-domain-verification=ArGnwABsYeaifdza
- Probely=dd7ffaf7-a6f5-466f-b615-b573c40005af
- google-site-verification=s_d7-3pGPplj8JZdGJ8wLuRpIlmCRqk1uc24R3-JGPc
- SPFv=spf1 mx ip4:62.28.56.6 ip4:88.157.200.147 ip4:185.2.87.110 ip4:194.65.81.88/29 ip4:194.65.92.63 a:c.spf.service-now.com include:spf.protection.outlook.com include:5479587.spf03.hubspotemail.net -all
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