Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
stackoverflow.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 22:59:47 UTC · ↺ Refresh
MX Hostnames
- alt2.aspmx.l.google.com
- aspmx.l.google.com
- alt1.aspmx.l.google.com
- alt3.aspmx.l.google.com
- alt4.aspmx.l.google.com
MX Priorities
- aspmx.l.google.com: 1
- alt3.aspmx.l.google.com: 10
- alt4.aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
A / AAAA Records
- 198.252.206.1
Mail Server IPs
- 172.253.122.27 ↩ bh-in-f27.1e100.net
- 2607:f8b0:4004:c25::1b ↩ yuiadtq-in-f27.1e100.net
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 173.194.76.26 ↩ ws-in-f26.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
SOA Record
Raw SOA
damian.ns.cloudflare.com dns.cloudflare.com 2399789883 10000 2400 604800 1800
Primary NS (mname)
damian.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399789883
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
damian.ns.cloudflare.com
sureena.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:52.38.191.241 include:_spf1.stackoverflow.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
google._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
20 records- openai-domain-verification=dv-GLNufzbWDzAq0fDXHD6jxeCK
- adobe-idp-site-verification=25ba5203f3687c9cd6ee3223ee5de1528917828d1da3ebd3bd9a44094cbfc4ac
- apple-domain-verification=O9jlnJXAQ7sNSZqC
- cursor-domain-verification-sb0ayf=Pk6AyptQuTpzpcuSlfYGWloxv
- ibmid=4e7cbbb3-5f12-40b4-96c7-5b064347b822
- ZOOM_verify_AbkNwz5bBl0eurcDKyhhuk
- MS=ms52592611
- google-site-verification=2Bi6SYw5skkRexdtdLPL2gpxeIhLxnYVqITVP9Htl3w
- onetrust-domain-verification=e445562296a64c649ae3d520230b8c4c
- google-site-verification=o3EMam8yBGo1yEjyybIiZcOunGHOQKpo8JmOtp9n1BU
- google-site-verification=ctogLnZNAdc_CXq8yOhODMLpmugGynjxKecKHDz4oL8
- google-site-verification=rdWtMbplKjbRHGr2dNONfwkqithlUvjr3u6i8QEz_mo
- atlassian-domain-verification=byLeZgl3MIcfOqwWuMhq8Fhr/1zem/jIaouJegvDZbBKUU5OqhwDjdpkyYg5CTzm
- anthropic-domain-verification-q70207=cKyy0llXkD10O4rDQpWz8tQ5K
- make-domain-verification=eec31159-f381-4f38-9d89-e59123dd023e
- onetrust-domain-verification=0d9d67f856334905a54256085a5768b3
- docker-verification=d65aee54-9091-4ceb-b792-61f5d5804050
- v=MCPv1; k=ed25519; p=VhBofO8RaYvTvHT7q5tTty+HQeCU8R6h5Y8k/sj20So=
- SPFv=spf1 ip4:52.38.191.241 include:_spf1.stackoverflow.com ~all
- docusign=4262531d-29f4-4a62-9f33-ae9f66f5247b
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