8build.com.sg

Valid Email Server
Domain Lookup › 8build.com.sg

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
8build.com.sg
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-04-01 20:03:55 UTC · ↺ Refresh

MX Hostnames

  • 8build-com-sg.mail.protection.outlook.com

MX Priorities

  • 8build-com-sg.mail.protection.outlook.com: 10

A / AAAA Records

  • 198.50.252.65 ↩ ip65.ip-198-50-252.net

Mail Server IPs

  • 52.101.157.80 ↩ mail-os8pr02cu00100.inbound.protection.outlook.com
  • 52.101.124.117 ↩ mail-tydpr03cu00105.inbound.protection.outlook.com
  • 52.101.137.0 ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:cc1f::4 ↩ mail-os8pr02cu00104.inbound.protection.outlook.com
  • 2a01:111:f403:cc1a::8 ↩ mail-tydpr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:cc09:: ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.instradns.com root.instra.com 2010093004 28800 7200 604800 300
Primary NS (mname)
ns1.instradns.com
Admin Email (rname)
root@instra.com
Serial
2010093004
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns3.instradns.com
ns1.instradns.com
ns2.instradns.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:5.148.13.90 ip4:104.40.229.156 ip4:88.211.67.138 ip4:78.129.189.16 include:spf.protection.outlook.com include:spf.us.exclaimer.net include:mailanyone.net include:customers.clickdimensions.com include:servers.mcsv.net -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1

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

All TXT Records

3 records
  • SPFv=spf1 ip4:5.148.13.90 ip4:104.40.229.156 ip4:88.211.67.138 ip4:78.129.189.16 include:spf.protection.outlook.com include:spf.us.exclaimer.net include:mailanyone.net include:customers.clickdimensions.com include:servers.mcsv.net -all
  • MS=ms55828563
  • v=msv1 t=B1C6D7D4-A1FC-4102-8F31-1A1473D4C71B
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