Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
childrens.harvard.edu
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 23:47:25 UTC · ↺ Refresh
MX Hostnames
- mailsmtp7.childrenshospital.org
- mailsmtp6.childrenshospital.org
- mailsmtp2.childrenshospital.org
- mailsmtp4.childrenshospital.org
- mailsmtp5.childrenshospital.org
- mailsmtp3.childrenshospital.org
- mailsmtp1.childrenshospital.org
MX Priorities
- mailsmtp3.childrenshospital.org: 5
- mailsmtp6.childrenshospital.org: 5
- mailsmtp2.childrenshospital.org: 5
- mailsmtp1.childrenshospital.org: 5
- mailsmtp4.childrenshospital.org: 5
- mailsmtp7.childrenshospital.org: 5
- mailsmtp5.childrenshospital.org: 5
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 134.174.20.73 ↩ mailsmtp3.childrenshospital.org
- 134.174.20.74 ↩ mailsmtp6.childrenshospital.org
- 134.174.13.92 ↩ mailsmtp2.childrenshospital.org
- 134.174.13.91 ↩ mailsmtp1.childrenshospital.org
- 134.174.13.55 ↩ mailsmtp4.childrenshospital.org
SOA Record
Raw SOA
ndcnetnse1.tch.harvard.edu isddnsadmins-dl.childrens.harvard.edu 927 21600 3600 2419200 60
Primary NS (mname)
ndcnetnse1.tch.harvard.edu
Admin Email (rname)
isddnsadmins-dl@childrens.harvard.edu
Serial
927
Refresh
21600s
Retry
3600s
Expire
2419200s
Minimum TTL
60s
Nameservers (NS)
ndcnetnse1.tch.harvard.edu
tchns2.chboston.org
ns5.childrenshospital.org
tchns3.chboston.org
bdcnetnse1.tch.harvard.edu
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:134.174.13.91 ip4:134.174.13.92 ip4:134.174.20.73 ip4:134.174.20.74 ip4:134.174.13.18 ip4:134.174.20.21 ip4:134.174.13.55 ip4:134.174.13.56 ip4:134.174.20.50 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;rua=mailto:[email protected];ruf=mailto:[email protected];fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
25 records- atlassian-domain-verification=ZOT0cbhQAWaPl478Sb2H1LMZ1zjJUz9WdqLq8tFYx0VlbuLbtCzx4B111Tw0aC4x
- globalsign-domain-verification=90C27A8CA54E1CA28433A1D535C9C227
- smartsheet-site-validation=t7m09199fkoc4tQsqzuPVbetTEXkj31H
- e2ma-verification=rmd3
- globalsign-domain-verification=0434989B827AC1FF4CF5CA764BFC7DC6
- MS=ms45479070
- airtable-verification=86da9ff5cd3b729355d58e2e0a978ce5
- globalsign-domain-verification=A51E436F03972F3928754ACD2A8D6D35
- docusign=058e946d-e5c7-4c8e-a7ff-d3e44d7b0091
- google-gws-recovery-domain-verification=45449801
- ibmid=77876fd3-4fe6-419f-a075-c2485c8999c9
- duo_sso_verification=jfrYd7UsDLCykAhkjmPzoWA6QY3xpFSYrhpIhEiJDxWKaLaGoRLIplh2ryCSJqaV
- atlassian-domain-verification=tZs2SCdeSHze/DKMbacA6rGNUwsyxQAyufdataAMy5dmzJ52HbHVSqAM1ybbbONH
- globalsign-domain-verification=7425070AA1A100FAF7420ADEB5B192AE
- apple-domain-verification=p4bb3Rrya8LCzLQm
- _globalsign-domain-verification=axEKlHxGrwqg53xy3uKK2mFwlhOANAcNoAMwU775Mj
- openai-domain-verification=dv-bYKRvVXj24egx6FPAeThgTHH
- _globalsign-domain-verification=zqTtPUZs1Tjy1-kZZDhvSGGq9Tr3c5m96JVCy_72M_
- MS=340A393953FFE4A512A2F26478231D6B5B25CC85
- google-site-verification=IGUqefGVZMlUm-TM8cjm_HJNJyIILq0TtVaViNj_2kQ
- globalsign-domain-verification=801410338D8F0A98E768BB8F54DC89DE
- SPFv=spf1 ip4:134.174.13.91 ip4:134.174.13.92 ip4:134.174.20.73 ip4:134.174.20.74 ip4:134.174.13.18 ip4:134.174.20.21 ip4:134.174.13.55 ip4:134.174.13.56 ip4:134.174.20.50 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
- atlassian-domain-verification=XTHr5XJJM0OlasIIGMGafEwEpPF6REfN8vURtzTf/WaVrvdkD7XunWXoedIxG1BC
- cisco-ci-domain-verification=31fa8c4fc66394604a798292940817520520472cc35f11dceb683a05a428df74
- globalsign-domain-verification=46c9ae8fbae963ced5c2638e08378f47
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