nulladev.cn

Valid Email Server
Domain Lookup › nulladev.cn

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
nulladev.cn
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-14 08:20:28 UTC · ↺ Refresh

MX Hostnames

  • mx.ym.163.com

MX Priorities

  • mx.ym.163.com: 10

A / AAAA Records

  • 185.199.111.153 ↩ cdn-185-199-111-153.github.com
  • 185.199.108.153 ↩ cdn-185-199-108-153.github.com
  • 185.199.109.153 ↩ cdn-185-199-109-153.github.com
  • 185.199.110.153 ↩ cdn-185-199-110-153.github.com
  • 2606:50c0:8000::153 (no PTR)
  • 2606:50c0:8001::153 (no PTR)
  • 2606:50c0:8002::153 (no PTR)
  • 2606:50c0:8003::153 (no PTR)
CNAME → nulladev.github.io

Mail Server IPs

  • 111.124.200.35 (no PTR)

SOA Record

Raw SOA f1g1ns1.dnspod.net freednsadmin.dnspod.com 1725805192 3600 180 1209600 180
Primary NS (mname)
f1g1ns1.dnspod.net
Admin Email (rname)
freednsadmin@dnspod.com
Serial
1725805192
Refresh
3600s
Retry
180s
Expire
1209600s
Minimum TTL
180s

Nameservers (NS)

f1g1ns1.dnspod.net
f1g1ns2.dnspod.net

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.163.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

1 record
  • SPFv=spf1 include:spf.163.com ~all
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