jkcosprings.com

Valid Email Server
Domain Lookup › jkcosprings.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
jkcosprings.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 15:22:12 UTC · ↺ Refresh

MX Hostnames

  • jkcosprings-com.mail.protection.outlook.com

MX Priorities

  • jkcosprings-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 174.138.49.92 (no PTR)

Mail Server IPs

  • 52.101.9.2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
  • 52.101.8.46 ↩ mail-dm6pr05cu00406.inbound.protection.outlook.com
  • 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
  • 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:f90b:: ↩ mail-bn6pr04cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c936:: ↩ mail-cy1pr05cu00400.inbound.protection.outlook.com
  • 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c946::7 ↩ mail-ch5pr02cu00307.inbound.protection.outlook.com

SOA Record

Raw SOA ns1070.ui-dns.org hostmaster.1und1.com 2017060120 28800 7200 604800 600
Primary NS (mname)
ns1070.ui-dns.org
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060120
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns1018.ui-dns.biz
ns1045.ui-dns.com
ns1027.ui-dns.de
ns1070.ui-dns.org

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

3 records
  • google-site-verification=jZ0A3sBpdP_IVXk1tEWbBls9fFNsJUf0MRZxrzPt_bk
  • MS=ms40193370
  • SPFv=spf1 include:spf.protection.outlook.com ~all
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 jkcosprings.com

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits