coyotebio.com

Valid Email Server
Domain Lookup › coyotebio.com

Domain Overview

DNS: ✓ 21h ago Checker: ✓ 21h ago
coyotebio.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-07-01 23:36:17 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • mx2.feishu.cn
  • mx3.feishu.cn
  • mx1.feishu.cn

MX Priorities

  • mx3.feishu.cn: 10
  • mx1.feishu.cn: 1
  • mx2.feishu.cn: 5

A / AAAA Records

  • 39.104.15.96 (no PTR)

Mail Server IPs

  • 52.220.106.220 ↩ ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com
  • 101.126.58.225 (no PTR)
  • 122.14.229.0 (no PTR)

SOA Record

Raw SOA dns21.hichina.com hostmaster.hichina.com 2026060413 3600 1200 86400 600
Primary NS (mname)
dns21.hichina.com
Admin Email (rname)
hostmaster@hichina.com
Serial
2026060413
Refresh
3600s
Retry
1200s
Expire
86400s
Minimum TTL
600s

Nameservers (NS)

dns22.hichina.com
dns21.hichina.com

SPF Record

✓ Strict (-all)
v=spf1 +include:_netblocks.m.feishu.cn -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; fo=1; ruf=mailto:[email protected]; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

5 records
  • _globalsign-domain-verification=67epsWB4PTHhTW5wR7VzKgXYGxXZYaHYg9Xsi1rfDm
  • _globalsign-domain-verification=fYK-Iw4MnoST6zAAsIy1m7QUxKkuvWQdphn73CISad
  • google-site-verification=bgygdcjcYa769tqkO6Q49nKH63lpLpTSLq9LUKTXe2I
  • SPFv=spf1 +include:_netblocks.m.feishu.cn -all
  • _globalsign-domain-verification=eEVPwCyZNexG2sqypGa3CqTcIqKGLPBSFePv0iJPw7
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 · Customize →
See demo & docs
Deep verification
Full email verification for coyotebio.com

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

No credit card required
Get 1,000 Free Credits