`postmark.com`

DNSSEC	⚠️ Not signed
A	3.131.150.69^{🇺🇸 Amazon3.131.0.0/16 EC2 CMH prefix}
		PTR	`ec2-3-131-150-69.us-east-2.compute.amazonaws.com`
NS	`ns1.dnsimple.com` ⭐
		A	2400:cb00:2049:1::a29f:1804^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns1.dnsimple.com`
		A	162.159.24.4^{Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns1.dnsimple.com`
NS	`ns2.dnsimple-edge.net`
		A	2620:111:8005::53^{🇺🇸 AS327712620:111:8005::/48 Vultr Customer Route}
		A	199.247.153.53^{🇺🇸 AS32771199.247.153.0/24 Vultr Customer Route}
NS	`ns3.dnsimple.com`
		A	2400:cb00:2049:1::a29f:1a04^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns3.dnsimple.com`
		A	162.159.26.4^{Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns3.dnsimple.com`
NS	`ns4.dnsimple-edge.org`
		A	2620:111:8007::53^{🇺🇸 AS327712620:111:8007::/48 Vultr Customer Route}
		A	199.247.155.53^{🇺🇸 AS32771199.247.155.0/24 Vultr Customer Route}
SOA	`ns1.dnsimple.com`admin@dnsimple.com serial=1577333587

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1771291435

Subdomains

www.postmark.com

Same first word

postmark.com

postmark.dk

postmark.net

postmark.co

postmark.ee

postmark.su

postmark.nl

postmark.email

postmark.in

postmark.eu

postmark.ru

postmark.it

postmark.org

postmark.ws

postmark.me

postmark.es

postmark.de

postmark.us

postmark.co.uk

postmark.tv

Similar names

sportmak.com

markspot.us

topmarks.ca

posmarkt.com

kopsmart.com

kamsport.com

komparts.ru

topmarks.co.uk

topmarks.co.za

stormpak.com

topmarks.ru

apkstorm.com

stompark.ru

topmarks.com.au

markstop.com

komparts.com

toarpsmk.se

mokparts.com

topmarks.de

spotmark.com

amksport.com

mtoparks.com

marktpos.com

kamsport.ru

topmarks.co

kampstor.com

amksport.rs

kompstar.com

markpost.nl

kmasport.com

topmarks.eu

optmarks.com

komparts.de

DNS History

20 records (5 active, 15 former)

○NSns-1264.awsdns-30.org2015-07-01 → 2016-06-20 · 4 obs

● 2015-07-01 14:52:10
● 2016-06-20 19:16:32
○ 2026-02-18 22:04:44
○ 2026-03-01 17:10:58

○NSns-1911.awsdns-46.co.uk2015-07-01 → 2016-06-20 · 4 obs

● 2015-07-01 14:52:10
● 2016-06-20 19:16:32
○ 2026-02-18 22:04:44
○ 2026-03-01 17:10:58

○NSns-423.awsdns-52.com2015-07-01 → 2016-06-20 · 4 obs

● 2015-07-01 14:52:10
● 2016-06-20 19:16:32
○ 2026-02-18 22:04:44
○ 2026-03-01 17:10:58

○NSns-595.awsdns-10.net2015-07-01 → 2016-06-20 · 4 obs

● 2015-07-01 14:52:10
● 2016-06-20 19:16:32
○ 2026-02-18 22:04:44
○ 2026-03-01 17:10:58

●NSns1.dnsimple.com2026-02-18 → 2026-03-01 · 3 obs

○ 2016-06-20 19:16:32
● 2026-02-18 22:04:44
● 2026-03-01 17:10:58

●NSns2.dnsimple-edge.net2026-02-18 → 2026-03-01 · 3 obs

○ 2016-06-20 19:16:32
● 2026-02-18 22:04:44
● 2026-03-01 17:10:58

●NSns3.dnsimple.com2026-02-18 → 2026-03-01 · 3 obs

○ 2016-06-20 19:16:32
● 2026-02-18 22:04:44
● 2026-03-01 17:10:58

●NSns4.dnsimple-edge.org2026-02-18 → 2026-03-01 · 3 obs

○ 2016-06-20 19:16:32
● 2026-02-18 22:04:44
● 2026-03-01 17:10:58

○MXalt1.aspmx.l.google.com2015-07-01 → 2016-06-20 · 4 obs

● 2015-07-01 14:52:10
● 2016-06-20 19:16:32
○ 2026-02-18 22:04:44
○ 2026-03-01 17:10:58

○MXalt2.aspmx.l.google.com2015-07-01 → 2016-06-20 · 4 obs

● 2015-07-01 14:52:10
● 2016-06-20 19:16:32
○ 2026-02-18 22:04:44
○ 2026-03-01 17:10:58

○MXaspmx.l.google.com2015-07-01 → 2016-06-20 · 4 obs

● 2015-07-01 14:52:10
● 2016-06-20 19:16:32
○ 2026-02-18 22:04:44
○ 2026-03-01 17:10:58

○MXaspmx2.googlemail.com2015-07-01 → 2016-06-20 · 4 obs

● 2015-07-01 14:52:10
● 2016-06-20 19:16:32
○ 2026-02-18 22:04:44
○ 2026-03-01 17:10:58

○MXaspmx3.googlemail.com2015-07-01 → 2016-06-20 · 4 obs

● 2015-07-01 14:52:10
● 2016-06-20 19:16:32
○ 2026-02-18 22:04:44
○ 2026-03-01 17:10:58

○MXaspmx4.googlemail.com2015-07-01 → 2016-06-20 · 4 obs

● 2015-07-01 14:52:10
● 2016-06-20 19:16:32
○ 2026-02-18 22:04:44
○ 2026-03-01 17:10:58

○MXaspmx5.googlemail.com2015-07-01 → 2016-06-20 · 4 obs

● 2015-07-01 14:52:10
● 2016-06-20 19:16:32
○ 2026-02-18 22:04:44
○ 2026-03-01 17:10:58

○A216.239.32.212015-07-01 → 2016-06-20 · 4 obs

● 2015-07-01 14:52:10
● 2016-06-20 19:16:32
○ 2026-02-18 22:04:44
○ 2026-03-01 17:10:58

○A216.239.34.212015-07-01 → 2016-06-20 · 4 obs

● 2015-07-01 14:52:10
● 2016-06-20 19:16:32
○ 2026-02-18 22:04:44
○ 2026-03-01 17:10:58

○A216.239.36.212015-07-01 → 2016-06-20 · 4 obs

● 2015-07-01 14:52:10
● 2016-06-20 19:16:32
○ 2026-02-18 22:04:44
○ 2026-03-01 17:10:58

○A216.239.38.212015-07-01 → 2016-06-20 · 4 obs

● 2015-07-01 14:52:10
● 2016-06-20 19:16:32
○ 2026-02-18 22:04:44
○ 2026-03-01 17:10:58

●A3.131.150.692026-02-18 → 2026-03-01 · 3 obs

○ 2016-06-20 19:16:32
● 2026-02-18 22:04:44
● 2026-03-01 17:10:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
postmark.com	ns1.dnsimple.com, ns3.dnsimple.com, ns4.dnsimple-edge.org, ns2.dnsimple-edge.net	4 records

✅ Authoritative Response

Server: 162.159.26.4

NS records: ns1.dnsimple.com, ns3.dnsimple.com, ns4.dnsimple-edge.org, ns2.dnsimple-edge.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for postmark.com (unsigned zone)

⏱️ Timing

Total: 715ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`3.131.150.69`
NS	4	`ns1.dnsimple.com, ns2.dnsimple-edge.net...`
SOA	1	`ns1.dnsimple.com admin.dnsimple.com`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.dnsimple.com, ns1.dnsimple.com, ns3.dnsimple.com...)

Analysis

Hierarchy

postmark.com is the parent of www.postmark.com.

IP Addresses

postmark.com resolves to a single IP address: 3.131.150.69.

Other host names including mail.usnetizen.com, mailer.directchannel.info, www.pure(0x736578)generation.com, reifen-dreyer.com and mademonster.com share IP numbers with postmark.com.

Name Servers

postmark.com is delegated to four name servers: ns1.dnsimple.com, ns3.dnsimple.com, ns2.dnsimple-edge.net and ns4.dnsimple-edge.org.

postmark.com at least partially shares name servers with other domains, including emanon.com, aa.vin, firehousecomms.com, orsedd.com and pionero.com.

These name servers are commonly used with ns2.dnsimple.com and ns4.dnsimple.com.

Hosts with two IP numbers:

Host ns1.dnsimple.com points to 2400:cb00:2049:1::a29f:1804 and 162.159.24.4

Host ns3.dnsimple.com points to 2400:cb00:2049:1::a29f:1a04 and 162.159.26.4

Host ns2.dnsimple-edge.net points to 2620:111:8005::53 and 199.247.153.53

Host ns4.dnsimple-edge.org points to 2620:111:8007::53 and 199.247.155.53

postmark.com - robtex.com

postmark.com

com

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

`postmark.com`

`com`