harpercollins.com

Valid Email Server

Domain Overview

DNS: โœ“ 2mo ago Checker: โœ“ 2mo ago
harpercollins.com
Yes
โœ“ Yes
Proofpoint
No
No
โš  Yes
No
No

Checked via [email protected] ยท 2026-03-26 05:58:21 UTC ยท โ†บ Refresh

MX Hostnames

  • mxa-00596a01.gslb.pphosted.com
  • mxb-00596a01.gslb.pphosted.com

MX Priorities

  • mxb-00596a01.gslb.pphosted.com: 5
  • mxa-00596a01.gslb.pphosted.com: 5

A / AAAA Records

  • 23.227.38.65 โ†ฉ myshopify.com

Mail Server IPs

  • 205.220.182.48 โ†ฉ mx0b-00596a01.pphosted.com

SOA Record

Raw SOA dbru.br.ns.els-gms.att.net rm-hostmaster.ems.att.com 628 21600 3600 1728000 21600
Primary NS (mname)
dbru.br.ns.els-gms.att.net
Admin Email (rname)
rm-hostmaster@ems.att.com
Serial
628
Refresh
21600s
Retry
3600s
Expire
1728000s
Minimum TTL
21600s

Nameservers (NS)

dbru.br.ns.els-gms.att.net
dmtu.mt.ns.els-gms.att.net

SPF Record

โœ“ Soft Fail (~all)
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
๐Ÿ“Š DNS lookups: 1/10
~ Soft fail (~all) โ€” moderate enforcement

DMARC Record

โœ“ Reject
v=DMARC1; p=reject; sp=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
โœ“ Reject โ€” strongest protection
๐Ÿ“‹ SPF alignment: Relaxed ยท DKIM alignment: Relaxed
๐Ÿ“ง Reports โ†’ mailto:[email protected]
โ†ณ Subdomain policy: reject

DKIM Selectors

โœ“ 5 found
google._domainkey
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
โœ“ Public key: 392 chars (valid)
โœ“ DKIM properly configured for selector: google

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

All TXT Records

32 records
  • _globalsign-domain-verification=bkER3fxZbQLIEl16wZS08EnQpoEG9UQBKihu8Ks2Zd
  • dropbox-domain-verification=ucbh5javnke3
  • SPFv=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
  • google-site-verification=jBGiywYAcKUeCPqNZsGSvr_C6RMCPh0Z9g73o-1sBVI
  • google-site-verification=tyaXIKYYcxrtquGnQyTPzzqgJzO-f3JTYTofj1Pzg8c
  • /eU+eq5f7XbZNa8X8rWAWZCAxYOy7z4IYhIT2Hp05EahhGMbex3/zdcOQDwWN6QGJr6ECqI6hdg1TqprNfJiYg==
  • docker-verification=dfcc680b-f409-45d1-b9a7-7992e21b9a52
  • figma-domain-verification=950abdf37a7ff2b00c3954b0b7c5b529439c5bc172d9955316215e3348f14054-1720572824
  • extensis-domain-verification=fb808a86-2bd8-4609-b6da-ee938a0b5625
  • gc-ai-domain-verification-ctbrt8=XloEYpi5FPEXK53iCdLQtkSRU
  • ahrefs-site-verification_73874523a8c99a90479647cc3a4099da8bdd565a9b576542cdf75182e5b3096e
  • yahoo-verification-key=i+M9oi9b5+XYPU48wdxWhYtTSJpnVouSnI3IUqZq88I=
  • openai-domain-verification=dv-0nFS3ectycyfVyRNeTWKRZz3
  • knowbe4-site-verification=0694ce74005828dc4bb8b7299bfb6f61
  • srjf85faf1ivlj2abkt967tdfd
  • google-site-verification=nmk1hXTEYrIjhNQa3heeK1KiHKtzpXxB1jDCZP7e8o0
  • docusign=725b7e74-15db-4d54-ac76-889b6f206549
  • shopify-verification-code=nZBi4zupnooVrmOOmRl9un6F5ZYuq9
  • ZOOM_verify_c8YbePuKRTOlYTGf_XKe2Q
  • google-site-verification=mrNi0RTTBHQ_NPHcDoUYnii2GYVeN8gg0XIYRMJmoU0
  • nmmBU9m0JKlQMzYMFSA/7LacnfwY0LsGTpiMcOsFM0jILtamuI3jvV2g3+O7KKOWO4rFfGHDmZWIO4IRD+zdlg==
  • ca3-55817d6452e54bb686ad84dded8965e2
  • dbc36a8f57004cec8e50382190a4c767
  • figma-domain-verification=2f62cdb936c6fe21e979b91c99c54d82fb999e849a36aa4b2c5d05e3f7ffad82-1771355140
  • bugcrowd-verification=a5b82af72ff73e6f057526a8c6946c80
  • adobe-idp-site-verification=42f51b67c9248bf4af00579848be3b6b4165111f7e95fa138083c369ab1e127f
  • webexdomainverification.4C675B8AE253B136E053AB06FC0A3F65=af0d073d-91d2-47fb-afa5-c35672c317c2
  • atlassian-domain-verification=uNoIhBXurxzVlQa0FvK2t9Yld5byfvXbFRQaMToGvrieKjBdylMs8jcSXRKQKqao
  • asv=6bcb95b6501de3efbcb4bba9870aa071
  • doordash-verification=N8fQ7KYWS5swsnXabGRKOjeGIighbm
  • ValidationTokenValue=90fe4eb0-f1cb-4e32-a847-dc0e99fd6213
  • adobe-sign-verification=f95381908feb7fd54d511615905bee51
Free ยท No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts โ€” unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code ยท Works on any site
See demo & docs
Deep verification
Full email verification for harpercollins.com

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

No credit card required
Get 1,000 Free Credits