Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
bisd.net
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 06:11:57 UTC · ↺ Refresh
MX Hostnames
- alt3.aspmx.l.google.com
- aspmx.l.google.com
- alt1.aspmx.l.google.com
- alt2.aspmx.l.google.com
- alt4.aspmx.l.google.com
MX Priorities
- alt2.aspmx.l.google.com: 5
- alt1.aspmx.l.google.com: 5
- alt4.aspmx.l.google.com: 10
- alt3.aspmx.l.google.com: 10
- aspmx.l.google.com: 1
A / AAAA Records
- 104.17.71.73
Mail Server IPs
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
- 192.178.155.27 ↩ yuiadrs-in-f27.1e100.net
- 2607:f8b0:4004:c1d::1b ↩ ww-in-f27.1e100.net
SOA Record
Raw SOA
ns10.digicertdns.com dns.digicertdns.com 2009010203 43200 3600 1209600 180
Primary NS (mname)
ns10.digicertdns.com
Admin Email (rname)
dns@digicertdns.com
Serial
2009010203
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns12.digicertdns.com
ns10.digicertdns.com
ns11.digicertdns.com
ns13.digicertdns.net
ns14.digicertdns.net
ns15.digicertdns.net
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:8.12.72.20 ip4:66.195.143.26 include:_spf.google.com include:_spf.psm.knowbe4.com include:emsd1.com include:customerspf.schoolmessenger.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; aspf=r; adkim=r
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
google._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
7 records- jamf-site-verification=-cfu6mNWXbEpasnBR0_M0g
- google-gws-recovery-domain-verification=40454598
- google-site-verification=uoO-zeQCE8WsSaJ95p9H6a27IG4AVqPOppw_ahWl_4s
- SPFv=spf1 ip4:8.12.72.20 ip4:66.195.143.26 include:_spf.google.com include:_spf.psm.knowbe4.com include:emsd1.com include:customerspf.schoolmessenger.com ~all
- dt0yp7s0yh99wrzc73tm4kh6xq9zy056
- cisco-ci-domain-verification=2adbb0707a1060fb1932ad830a88ea81f6e4d6e6e6c7877c9c9bfcf632a942c1
- google-site-verification=KPHNCgPpVcY-16PhZKRKH2nCY5b9WLAJwWUJpY0XQPE
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