xencor.com

Valid Email Server
Domain Lookup › xencor.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
xencor.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-23 14:23:29 UTC · ↺ Refresh

MX Hostnames

  • usb-smtp-inbound-1.mimecast.com
  • usb-smtp-inbound-2.mimecast.com

MX Priorities

  • usb-smtp-inbound-1.mimecast.com: 10
  • usb-smtp-inbound-2.mimecast.com: 10

A / AAAA Records

  • 162.159.135.42 (no PTR)

Mail Server IPs

  • 170.10.150.242 ↩ usb-smtp-delivery-2.mimecast.com
  • 170.10.152.242 ↩ usb-smtp-delivery-2.mimecast.com

SOA Record

Raw SOA ns0.dnsmadeeasy.com dns.dnsmadeeasy.com 2008010793 43200 3600 1209600 180
Primary NS (mname)
ns0.dnsmadeeasy.com
Admin Email (rname)
dns@dnsmadeeasy.com
Serial
2008010793
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s

Nameservers (NS)

ns4.dnsmadeeasy.com
ns3.dnsmadeeasy.com
ns2.dnsmadeeasy.com
ns0.dnsmadeeasy.com
ns1.dnsmadeeasy.com

SPF Record

✓ Strict (-all)
v=spf1 include:usb._netblocks.mimecast.com IP4:107.20.210.250 IP4:52.1.14.157 IP4:107.23.16.222 IP4:54.173.83.138 IP4:72.32.173.242 ip4:52.39.4.253 ip4:4.26.0.242 include:spf.protection.outlook.com include:sent-via.netsuite.com include:spf.usa.net include:mailsenders.netsuite.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=none; fo=1; pct=100; adkim=r; aspf=r
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

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

11 records
  • atlassian-domain-verification=Om5eFI68OfH64zaKF406YYjRtRHbzggMJU3lbHsGFm5W3EDPHkbuh6ZGnhkzuH76
  • ca3-d4f3a78e936b4983aa0e8e3f4d23f5da
  • docusign=333cf550-c40a-420c-b7de-f7ab7d571be6
  • docusign=af06b8d4-8ca0-46c4-baa5-bc8984d88f49
  • adobe-idp-site-verification=b967593c6db1b59de6fa3e75d9c525c25a6a69f13c1ff7350575bf5a27fa7886
  • MS=ms13967719
  • fireflies-verification=01JZ3VA9RQYN1RWC5GWA58YCH3.ffverify.fireflies.ai-request-verification=2025-07-01T20:37:07Z
  • box-domain-verification=705fcb378e6ce5d896162182fd3fdcbee9093d68d7150dc9806a63f36facdbf8
  • logmein-verification-code=976afe6f-8039-40e4-95a5-261b462c9a36
  • SPFv=spf1 include:usb._netblocks.mimecast.com IP4:107.20.210.250 IP4:52.1.14.157 IP4:107.23.16.222 IP4:54.173.83.138 IP4:72.32.173.242 ip4:52.39.4.253 ip4:4.26.0.242 include:spf.protection.outlook.com include:sent-via.netsuite.com include:spf.usa.net include:mailsenders.netsuite.com -all
  • apple-domain-verification=X0UkNGlU5epUZrLD
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
See demo & docs
Deep verification
Full email verification for xencor.com

SMTP handshake, catch-all detection, SPF/DKIM/DMARC analysis, and Yahoo/Outlook verification.

Get 1,000 Free Credits