williamblair.com

Valid Email Server

Domain Overview

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

Checked via [email protected] ยท 2026-03-22 21:18:52 UTC ยท โ†บ Refresh

MX Hostnames

  • mxa-00172601.gslb.pphosted.com
  • mxb-00172601.gslb.pphosted.com

MX Priorities

  • mxa-00172601.gslb.pphosted.com: 10
  • mxb-00172601.gslb.pphosted.com: 20

A / AAAA Records

  • 207.97.238.229 (no PTR)

Mail Server IPs

  • 67.231.148.189 โ†ฉ mx0a-00172601.pphosted.com
  • 67.231.156.188 โ†ฉ mx0b-00172601.pphosted.com

SOA Record

Raw SOA ns1-05.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-05.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s

Nameservers (NS)

ns4-05.azure-dns.info
ns1-05.azure-dns.com
ns2-05.azure-dns.net
ns3-05.azure-dns.org

SPF Record

โœ“ Soft Fail (~all)
v=spf1 include:spf1.williamblair.com include:spf2.williamblair.com include:spf3.williamblair.com include:spf4.williamblair.com ip4:199.15.212.0/22 ~all
๐Ÿ“Š DNS lookups: 4/10
~ Soft fail (~all) โ€” moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
~ Quarantine โ€” good protection (failing mail goes to spam)
๐Ÿ“‹ SPF alignment: Relaxed ยท DKIM alignment: Relaxed
๐Ÿ“ง Reports โ†’ mailto:[email protected]

DKIM Selectors

โœ“ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
โœ“ Public key: 216 chars (valid)
โœ“ DKIM properly configured for selector: selector1

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

All TXT Records

15 records
  • cisco-ci-domain-verification=2070e2a21f96f8e9ddd07a7f9fade7e22f7eb4774e2210d4ecbf1947a8a15d00
  • smartsheet-site-validation=crzqJKEq2XMSXoftL87WU0bzeRJNTOn0
  • SFMC-hnZItqxtF3jyt01qSnmo7EOIH6nsADob_MT59sUg
  • apple-domain-verification=T9lY1iQJ9zda0hvg
  • SFMC-MJKEnXVwQUYP9fKChhaZLGz4x6d1qvbSs2OaPtpj
  • UH2fb3L1i/oSix3SPCtwRzkQipt7gBW80Bk7tOdPAEt7C0FC4OF5Zllfes+WJ8hSN+jqhBVxCU2TDnmmnPljNA==
  • atlassian-domain-verification=qhBW9S7sVmRVeYCFQYLTCSanESWalvzLS+HV4+8YOBX7MrZr78TBdRfAfCryavR4
  • perplexity-ai-domain-verification-sf6zty=9eYe693b9ABuz830j8EcEIiU0
  • docusign=4429e0dc-b34c-4056-b3af-2292d1bd100d
  • 2f24cbf6ec9246c6a57594272a8ddf3f
  • SPFv=spf1 include:spf1.williamblair.com include:spf2.williamblair.com include:spf3.williamblair.com include:spf4.williamblair.com ip4:199.15.212.0/22 ~all
  • adobe-idp-site-verification=e565c37a42ebb2ae62f90b576fbf7909ff0bb26eccd3bcb16ceaf4c440b06d68
  • wrike-verification=NjYxMzc3OjZkZGI5ZDdkZjI3NTZlZDQ1ZWNmOWI4ZGQ1YmNmNDMzNjJhMDQwNzhlNjgxNzE2MTExMGRmMTA1MGM4OTg5Nzg=
  • MS=ms27567009
  • _fd4bvcg9dkllnt2cown1dozuyt11x55
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 williamblair.com

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

No credit card required
Get 1,000 Free Credits