Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
knowbe4.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 22:04:39 UTC · ↺ Refresh
MX Hostnames
- aspmx5.googlemail.com
- alt2.aspmx.l.google.com
- aspmx2.googlemail.com
- aspmx4.googlemail.com
- aspmx.l.google.com
- alt1.aspmx.l.google.com
- aspmx3.googlemail.com
MX Priorities
- aspmx.l.google.com: 1
- aspmx2.googlemail.com: 10
- aspmx3.googlemail.com: 10
- aspmx4.googlemail.com: 10
- aspmx5.googlemail.com: 10
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
A / AAAA Records
- 3.171.117.76
- 3.171.117.71
- 3.171.117.3
- 3.171.117.70
Mail Server IPs
- 192.178.218.26 ↩ yuiadtq-in-f26.1e100.net
- 2607:f8b0:4004:c1f::1a ↩ pd-in-f26.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
SOA Record
Raw SOA
ns-1036.awsdns-01.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1036.awsdns-01.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-38.awsdns-04.com
ns-853.awsdns-42.net
ns-1036.awsdns-01.org
ns-1882.awsdns-43.co.uk
SPF Record
✓ Strict (-all)
v=spf1 include:mailsenders.netsuite.com include:_spf.google.com include:mail.zendesk.com include:stspg-customer.com ip4:23.21.109.212 ip4:23.21.109.197 ip4:52.49.201.246 ip4:52.49.235.189 ip4:54.172.84.90 ip4:147.160.167.0/24 ip4:168.235.226.71 ip4:168.235.226.72 ip4:168.235.226.73 ip4:168.235.226.74 ip4:168.235.233.211 ip4:168.235.233.212 ip4:168.235.233.213 ip4:192.254.121.248 ip4:167.89.63.53 ip4:167.89.111.118 exists:%{i}._spf.mta.salesforce.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected],mailto:[email protected],mailto:[email protected];ruf=mailto:[email protected],mailto:[email protected],mailto:[email protected]; ri=3600; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 5 found
google._domainkey
selector1._domainkey
default._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
28 records- google-site-verification=3Hie3OelJT_rJykvur3IxPN50L9mAmpstgWQu7g7rbQ
- docker-verification=e9e873bd-4dc8-437e-9718-93ee84b39448
- SPFv=spf1 include:mailsenders.netsuite.com include:_spf.google.com include:mail.zendesk.com include:stspg-customer.com ip4:23.21.109.212 ip4:23.21.109.197 ip4:52.49.201.246 ip4:52.49.235.189 ip4:54.172.84.90 ip4:147.160.167.0/24 ip4:168.235.226.71 ip4:168.235.226.72 ip4:168.235.226.73 ip4:168.235.226.74 ip4:168.235.233.211 ip4:168.235.233.212 ip4:168.235.233.213 ip4:192.254.121.248 ip4:167.89.63.53 ip4:167.89.111.118 exists:%{i}._spf.mta.salesforce.com -all
- status-page-domain-verification=mncmp25mgt7j
- zapier-domain-verification-challenge=f1426c5b-21d2-4bc7-82dd-e74d108c77c8
- mongodb-site-verification=CLB4dkKYnXU5G5xERSrl2N0XPr9EUX3a
- adobe-idp-site-verification=370d08217eb4fd02ec25c8b9d1e4062ff87e4273d282e12f4995ea4e269c6160
- openai-domain-verification=dv-XNE4ecucjHvRrr9b7TPMDQZg
- mixpanel-domain-verify=bc139ab5-6f4e-41a7-b7cd-d13f89aa8710
- jamf-site-verification=RIg8eN5i9Iok12Yr5DejHw
- pendo-domain-verification=02b2333b-3f4f-40ef-9659-408cec8ee1a3
- g4l3bgqre4hkae8dfmm4v1q4je
- wiz-domain-verification=80d80bf3b6c164a1fd91b8150e90ba3d504058315fd7c7245a9d0f480e5f1618
- google-site-verification=0aAUofkA6qAxk_uYttw0L4RjiIWAGL8-x-_pybvGhVo
- wiz-domain-verification=e6478bb3edd119aa3e701c038708e3cb1f0f13e7691fc7b2b488592070ae6366
- amazonses:i7kVVveQqrOBBAmbA4eYXUtjyQz27rfUdUdlUdEjHjU=
- bhd25m1n5fj8h8c4bchk43oeb4
- 19e0be4ea5354278ae7eacfc48bedb9b
- google-site-verification=WrBl38sScepa-oAzO5AlDr6qeJqHniarCDURkDMLpQs
- zapier-domain-verification-challenge=67e81d94-81d3-44c1-bb5b-f278a3ed32ca
- atlassian-domain-verification=ZhRqnN6RnH8AgFl3lYmodGh0L2aAKbEGfJETpJzak6O+lhMbMJ7WMiS392cSws63
- google-site-verification=gzYt5XSP0eQeEkG99s_UNqSrR89qfnCg6f3uFz0v8wY
- MS=ms32168056
- atlassian-domain-verification=OcPNSCfFoB9IocbkPrVxgaTPH2lCVlhD1MeWq//30V3aX05otEbViZRN5iaLjPWK
- adobe-sign-verification=600d5d8d4ae04f20e7d625c21e96ec48
- 7bbdc96bfd404e609c241bb7a3210cc3
- apple-domain-verification=qmAh14g4OX1bkue8
- google-site-verification=EJTeC07BGnS6X2PWc5FoEbPRt8T91Y4-lhZW7RLxS-c
Full email verification for knowbe4.com
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