aspeninstitute.org

Valid Email Server
Domain Lookup › aspeninstitute.org

Domain Overview

DNS: ✓ 3mo ago Checker: ✓ 3mo ago
aspeninstitute.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 04:04:16 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • aspeninstitute-org.mail.protection.outlook.com

MX Priorities

  • aspeninstitute-org.mail.protection.outlook.com: 0

A / AAAA Records

  • 104.18.15.86 (no PTR)
  • 104.18.14.86 (no PTR)
  • 2606:4700::6812:e56
  • 2606:4700::6812:f56

Mail Server IPs

  • 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
  • 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
  • 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
  • 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
  • 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com

SOA Record

Raw SOA carlos.ns.cloudflare.com dns.cloudflare.com 2398634139 10000 2400 604800 1800
Primary NS (mname)
carlos.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398634139
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

jean.ns.cloudflare.com
carlos.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf1.formassembly.com include:spf.protection.outlook.com include:spf1.aspeninstitute.org -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✓ 5 found
selector1._domainkey
selector2._domainkey
k1._domainkey
s1._domainkey
s2._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

26 records
  • pardot918223=6d657a535812d7c4137a7a25fea07e9cb4fc3f36df26242d9844b91bc543b822
  • nordpass-domain-verification=0d71f7ad995aef6b803962b64374b3722d5982e1a5a65040ff19283e4118e4ff
  • atlassian-domain-verification=HZ2WQCoi4CK0ieoEnUpq40qbzEinyE27u2xxjI7L9dRtGdjVBeFHar69bRT3cJMw
  • google-site-verification=X8-46RVye5s9Qzc_N_liXed343TYVSn0UGKMa7Z3cC4
  • google-site-verification=I6TxTbRrpmP5hM_Ew4rSx_0ZkF2hOQC36UerSnhEBEU
  • google-site-verification=n2luIVymAKSN9gfvh6GavlOfi0CV83PtaGISznuV9uw
  • slack-domain-verification=Szh1DUfPOJQppCQXReWL2qRabuWvayap4CAHoRhk
  • iContact337460
  • onetrust-domain-verification=e4ed44d5c4eb4420ad3556d08e0864bf
  • jamf-site-verification=d4cSvZBXgkmhFN5IP40eJA
  • anthropic-domain-verification-4843fw=i8KGrt9h4GS5AupLI6WlerFOR
  • _dmarc.aspeninstitute.org
  • openai-domain-verification=dv-TEdyYh9XsBzkW5OViYyrsHOF
  • facebook-domain-verification=00yeqydnz0p14wtm0j2n18z2uo8wyi
  • google-site-verification=ugzVWha5Bg0le3osp5GF7fYmFonSCx_d7EW36zk6dv4
  • google-site-verification=g6WXE3U2sdwKjgAf94aPEtJ-hi7D21fIjWf_h2mocZo
  • SPFv=spf1 include:spf1.formassembly.com include:spf.protection.outlook.com include:spf1.aspeninstitute.org -all
  • docusign=739cb927-500a-47e7-9926-4ec47ee704d6
  • canva-site-verification=xUgt9bsqysVD-ayJss-Ylw
  • ZOOM_verify_BcMQ-x5ESPWWMWC4CSdhGQ
  • atlassian-sending-domain-verification=652f748f-a4af-405b-8908-9e4cdee64672
  • apple-domain-verification=MIRmSFRVlUtfsdkq
  • e2ma-verification=iobfb
  • asv=10816eb09ba79a3da0e56696dd51b179
  • docusign=0fa7b5ef-7ea2-4ea0-9e05-0faee5d51a08
  • pardot918223=3e5a777b08b0f23561d198143b92fd6cfd7c2ba3f2ca9f358db0429b1d4a046d
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 · Customize →
See demo & docs
Deep verification
Full email verification for aspeninstitute.org

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits