mail.cardstack.com - dns.ninja

`mail.cardstack.com`

DNSSEC	⚠️ Not signed
MX	`feedback-smtp.eu-west-1.amazonses.com` ⭐
		A	18.200.42.95^{🇮🇪 Amazon18.200.0.0/16 EC2 DUB prefix}
			PTR	`ec2-18-200-42-95.eu-west-1.compute.amazonaws.com`
		A	34.243.41.226^{🇮🇪 Amazon34.240.0.0/13 EC2 DUB prefix}
			PTR	`ec2-34-243-41-226.eu-west-1.compute.amazonaws.com`
		A	34.250.195.198^{🇮🇪 Amazon34.248.0.0/13 EC2 DUB prefix}
			PTR	`ec2-34-250-195-198.eu-west-1.compute.amazonaws.com`
TXT	`v=spf1 include:amazonses.com ~all`

`cardstack.com`

	DNSSEC	⚠️ Not signed
	A	3.248.56.152^{🇮🇪 Amazon3.248.0.0/13 EC2 DUB prefix}
	A	18.202.8.75^{🇮🇪 Amazon18.202.0.0/15 EC2 DUB prefix}
	A	54.155.19.65^{🇮🇪 Amazon54.155.0.0/16 EC2 DUB prefix}
	NS	`iris.ns.cloudflare.com` ⭐
	NS	`terry.ns.cloudflare.com`
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽⁵⁾
	MX	`alt2.aspmx.l.google.com`⁽⁵⁾
	MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
	MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
	TXT	`atlassian-domain-verification=UaaDvFC5H9oFCHdkUJhXs9T/9gryy7JvQO/HlOJm1YIOPaT...`
	TXT	`google-site-verification=j2Pb6kwp5pBYiMiz7Y3s3oOlRTJeiAYAvBeEF5SMVBc`
	TXT	`v=spf1 include:servers.mcsv.net include:_spf.google.com include:amazonses.com...`
	TXT	`v=spf1 include:servers.mcsv.net include:_spf.google.com include:amazonses.com...`
	SOA	`iris.ns.cloudflare.com`dns@cloudflare.com serial=2407655541

rank #752351 globally
rank #330175 in the tld

Previously MX for

cardstack.com

Same first word

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DNS History

2 records (1 active, 1 former)

●MXfeedback-smtp.eu-west-1.amazonses.com2026-06-23 → 2026-06-23 · 1 obs

● 2026-06-23 01:59:54

○A216.70.64.172015-08-20 → 2015-08-20 · 3 obs

● 2015-08-20 04:18:42
○ 2015-12-24 03:05:58
○ 2026-06-23 01:59:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
cardstack.com	iris.ns.cloudflare.com, terry.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.118

NS records: iris.ns.cloudflare.com, terry.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cardstack.com (unsigned zone)

⏱️ Timing

Total: 272ms | Queries: -

📄 Records

Type	Count	Sample Data
MX	1	`feedback-smtp.eu-west-1.amazonses.com (p`
TXT	1	`v=spf1 include:amazonses.com ~all`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (iris.ns.cloudflare.com, iris.ns.cloudflare.com, iris.ns.cloudflare.com...)

Analysis

Mail Servers

mail.cardstack.com routes its mail through a single mail server, feedback-smtp.eu-west-1.amazonses.com.

mail.cardstack.com has the same mail server arrangement as a number of other domains, for example mail.nadlan.com, mail.mercedcaa.org, mail.developin.com and two more.

mail.cardstack.com shares at least some of its mail servers with other domains — for example format.org.il, beatsolutions.co.uk, syfakarditsas.gr and two more.

It is common to find these mail servers paired with mail servers aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and 3 more.

feedback-smtp.eu-west-1.amazonses.com resolves to three IP numbers — 18.200.42.95, 34.243.41.226 and 34.250.195.198.