Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gtb.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-22 20:34:46 UTC · ↺ Refresh
MX Hostnames
- mxb-0059cf01.gslb.pphosted.com
- mxa-0059cf01.gslb.pphosted.com
MX Priorities
- mxb-0059cf01.gslb.pphosted.com: 0
- mxa-0059cf01.gslb.pphosted.com: 0
A / AAAA Records
- 104.18.35.22 (no PTR)
- 172.64.152.234 (no PTR)
- 2606:4700:4403::6812:2316 (no PTR)
- 2606:4700:4403::ac40:98ea (no PTR)
Mail Server IPs
- 205.220.165.126 ↩ mx0a-0059cf01.pphosted.com
SOA Record
Raw SOA
blue.foundationdns.com dns.cloudflare.com 2398656182 10000 2400 604800 1800
Primary NS (mname)
blue.foundationdns.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398656182
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
blue.foundationdns.org
blue.foundationdns.com
blue.foundationdns.net
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:205.220.165.126 ip4:205.220.168.132 ip4:205.220.177.126 ip4:205.220.179.40 exists:%{i}._spf.e.sparkpost.com ip4:107.20.188.175 include:spf.protection.outlook.com include:eu._netblocks.mimecast.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; fo=1; adkim=r; aspf=r; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
28 records- google-site-verification=kLLPysHKgnvR8usC-5Bqb22TKNbu7jqgsf7du1n5uKc
- SPFv=spf1 ip4:205.220.165.126 ip4:205.220.168.132 ip4:205.220.177.126 ip4:205.220.179.40 exists:%{i}._spf.e.sparkpost.com ip4:107.20.188.175 include:spf.protection.outlook.com include:eu._netblocks.mimecast.com ~all
- google-site-verification=hFXh8N1AT5EcquYpuD7ZIl09QspQ593Lcw83-MUxsgQ
- MS=ms83249283
- adobe-sign-verification=f3dbb6beca72958de18edb001d33f6c
- miro-verification=721d35f136cb8451b723e87a1a768333e7da6a24
- google-site-verification=Ts1rz2VmXDhbRkSWWq35a8RkKf3Ja8hLXydZC73iPf8
- google-site-verification=v5srPbvBDnpSxZK16ME8wpSLXQwJ2jjjjUSOfbCsQaw
- dnc8gb7dqnmmhk54ygjyqfdh4dnfs094
- MS=ms15741557
- google-site-verification=RvqWbg6snYO6KxYCcxD-gT9kg2WhoxOhqeAvp3ETb7I
- adobe-sign-verification=28b95e9da51b4014dbec271df39bae35
- adobe-idp-site-verification=84e4467f9a24931a195012f8b0a3ca0e7027affbf27fbe5c931cb2a18b817fab
- box-domain-verification=59b71917baddbc8b8426986cd928d599567152523300bc6e87cddc9706304546
- smartsheet-site-validation=CiU5j9afSm_Lnw5Hzj0dcEW7WxxWxhFb
- wrike-verification=MzEyODg4Mzo5OWRmMmZkY2IwOTdjZDdjNGIxYTAyMzZmYzRiMGNiNDlhZmRlMTQ4ZmQ2MTU4YzU2YTM1ODI4ZjM2ZDBhMTYx
- adobe-idp-site-verification=db9460a6-088c-44c5-9fb7-73a4fae51d5a
- atlassian-domain-verification=srl2cvrxmrDiLdUrDjPwDedty1LyjLhY0YJaaWXrSRlKWoQKrxGeanEmbfrdFG2I
- canva-site-verification=7y8_sghgD62SWxe9OXLmsg
- google-site-verification=4iICnRUAzCtVpxsDurdddyqtOBuelknyRl9He7miyLQ
- smartsheet-site-validation=9wfS0jDVgEXNm7-8E0YyhAsk9gP_Q9DV
- MS=ms11113322
- MS=ms93722096
- onetrust-domain-verification=4549428cda9c4150801bb38587baf55a
- cisco-ci-domain-verification=17fd6af64e9fb97ef8ff1dfb6797477ecb404d392c0982af3ec7e213fddefcb6
- adobe-sign-verification=264516cebafe761f3671d6cd81d567bc
- citrix-verification-code=c8b16ce4-07b8-4236-824f-7078ac25fdd0
- miro-verification=1c6eba2a1332c26f33bb7294308e77384f194390
Full email verification for gtb.com
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