`linuxfoundation.org.cdn.cloudflare.net`

DNSSEC	⚠️ Not signed
MX	`mxa.global.inbound.cf-emailsecurity.net` ⭐
		A	172.65.64.137^{🇺🇸 Cloudflare172.65.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`mxb.global.inbound.cf-emailsecurity.net` ⭐
		A	172.65.64.78^{🇺🇸 Cloudflare172.65.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
TXT	`v=spf1 ip4:72.55.140.81 include:_spf.kernel.org include:_spf.google.com inclu...`

`org.cdn.cloudflare.net`

DNSSEC

⚠️ Not signed

Subdomains

insights.linuxfoundation.org.cdn.cloudflare.net

Same first word

Similar names

foundationlinux.com

DNS History

2 records (2 active, 0 former)

●MXmxa.global.inbound.cf-emailsecurity.net2026-05-10 → 2026-05-10 · 2 obs

● 2026-05-10 08:07:34
● 2026-05-10 08:07:36

●MXmxb.global.inbound.cf-emailsecurity.net2026-05-10 → 2026-05-10 · 2 obs

● 2026-05-10 08:07:34
● 2026-05-10 08:07:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cloudflare.net	ns1.cloudflare.net, ns2.cloudflare.net, ns3.cloudflare.net, ns4.cloudflare.net...	-

✅ Authoritative Response

Server:108.162.198.250

NS records: ns1.cloudflare.net, ns2.cloudflare.net, ns3.cloudflare.net, ns4.cloudflare.net, ns5.cloudflare.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cloudflare.net (unsigned zone)

⏱️ Timing

Total: 57ms | Queries: -

📄 Records

Type	Count	Sample Data
MX	2	`mxa.global.inbound.cf-emailsecurity.net , mxb.global.inbound.cf-emailsecurity.net`
TXT	1	`v=spf1 ip4:72.55.140.81 include:_spf.ker`

Analysis

Hierarchy

linuxfoundation.org.cdn.cloudflare.net is the parent of insights.linuxfoundation.org.cdn.cloudflare.net.

Mail Servers

Two mail servers handle linuxfoundation.org.cdn.cloudflare.net: mxa.global.inbound.cf-emailsecurity.net and mxb.global.inbound.cf-emailsecurity.net.

linuxfoundation.org.cdn.cloudflare.net shares the same mail server setup as other domains, for instance ixlscience.com, ironmail.org, fluencia.com, potempateam.com and rosettastone.de.

linuxfoundation.org.cdn.cloudflare.net shares some mail servers with other domains, at least partially, for instance ltgov-elect.virginia.gov, dmas.virginia.gov, casc.virginia.gov, mrc.virginia.gov and dcjs.virginia.gov.

these mail servers are often used alongside mailstream-east.mxrecord.io, mailstream-west.mxrecord.io and mailstream-central.mxrecord.mx.

Host names with one IP number:

mxa.global.inbound.cf-emailsecurity.net points to 172.65.64.137

mxb.global.inbound.cf-emailsecurity.net points to 172.65.64.78

linuxfoundation.org.cdn.cloudflare.net - robtex.com