Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tier1performance.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 02:21:17 UTC · ↺ Refresh
MX Hostnames
- tier1performance-com.mail.protection.outlook.com
MX Priorities
- tier1performance-com.mail.protection.outlook.com: 10
A / AAAA Records
- 141.193.213.10 (no PTR)
- 141.193.213.11 (no PTR)
Mail Server IPs
- 52.101.9.2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 52.101.11.15 ↩ mail-sa9pr02cu00207.inbound.protection.outlook.com
- 2a01:111:f403:f90f::1 ↩ mail-sa9pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.easydns.com zone.easydns.com 1772468303 43200 10800 604800 300
Primary NS (mname)
dns1.easydns.com
Admin Email (rname)
zone@easydns.com
Serial
1772468303
Refresh
43200s
Retry
10800s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
dns3.easydns.org
dns1.easydns.com
dns2.easydns.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:21757047.spf01.hubspotemail.net include:mail.zendesk.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
16 records- _pjzu6hxqbfad5srgsks3rsbbh7cxvxv
- f6e5423ddf694bee9df26c7812764f8c
- SPFv=spf1 include:spf.protection.outlook.com include:21757047.spf01.hubspotemail.net include:mail.zendesk.com ~all
- msfpkey=5wy04wqzn1wnr378sqgt88bhk
- apple-domain-verification=TFPBhTvzWM57R2Zg
- atlassian-domain-verification=u4rbsY2hbH41QbgiOxStAqmSXvLbQ2VCBHplyB7n35YPoF2vPDHzB9bEashmpjeK
- smartsheet-site-validation=2qr8x8nRSoYjAI-ykk-xwDRxmBmvSNPa
- google-site-verification=R4O7feUgj9sEoXKPoB2falpjjXOiWc07HZ5UO6Hqmec
- zd0jsqlnn79tmf00gmv1k8mt3f53sqvc
- _ngqwz7csoijnej32g4moybxlkf6glsw
- apple-domain-verification=QP-DQ5fd1MuWWm1JGnmSdIY3PoHs3C11fI_g2MNYE4E
- bw=hYYtIw8tM0lHdyDTj8g6pwRrrr0q6KBj8oHbDrQzcwmo
- _g9rb3d1j9s31eeruu891xnwxv3liqab
- miro-verification=56e336cbd5532aeae189012022aecdf26740f61d
- openai-domain-verification=dv-hzphlSzPwyPCJTBK729gY2bg
- 00DC000000175cF=1TBQg00000000xh
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for tier1performance.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits