postmarkapp.com - dns.ninja

`postmarkapp.com`

DNSSEC	⚠️ Not signed
A	94.247.142.1^{🇺🇸 CLOUDFLARESPECTRUM94.247.142.0/24}
NS	`ns-1262.awsdns-29.org` ⭐
		A	2600:9000:5304:ee00::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1262.awsdns-29.org`
		A	205.251.196.238^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1262.awsdns-29.org`
NS	`ns-1657.awsdns-15.co.uk`
		A	2600:9000:5306:7900::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1657.awsdns-15.co.uk`
		A	205.251.198.121^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1657.awsdns-15.co.uk`
NS	`ns-229.awsdns-28.com`
		A	2600:9000:5300:e500::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-229.awsdns-28.com`
		A	205.251.192.229^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-229.awsdns-28.com`
NS	`ns-721.awsdns-26.net`
		A	2600:9000:5302:d100::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-721.awsdns-26.net`
		A	205.251.194.209^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-721.awsdns-26.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c29::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadum-in-f27.1e100.net`
		A	142.251.179.26^{🇺🇸 Google142.251.179.0/24}
			PTR	`pd-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽²⁰⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽²⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`aspmx2.googlemail.com`⁽³⁰⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`aspmx3.googlemail.com`⁽³⁰⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
TXT	`01a65dddcd764010b6df567c88b8fb7d`
TXT	`abuseipdb-verification=QzehCZYK`
TXT	`digicert: 00577009 nagele@wildbit.com`
TXT	`google-site-verification=Bd-0GuslXF2wO_SnN_1pHncqvPZAuCOZxlGaly-V8zI`
TXT	`google-site-verification=CFwYqNoJsUkztxVzMjK8u1m0_BaklRvOZb5aecNTk8o`
TXT	`google-site-verification=aRqd5oLuMuPX2-qGutbokgWlmw76Gr68-v_Ryr0Pha8`
TXT	`v=spf1 a mx include:spf.mtasv.net include:_spf.google.com include:cmail1.com ...`
SOA	`ns-1262.awsdns-29.org`awsdns-hostmaster@amazon.com serial=1

`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=1783203516

rank #18503 globally
rank #9106 in the tld
WOT: SAFE (82/100)
📈 Tranco rank: #24,522

Subdomains

p-pm-inbound03-pktewr1-mx.postmarkapp.com

mx.postmarkapp.com

rebound.postmarkapp.com

pop3.postmarkapp.com

assets.postmarkapp.com

mx1-ord.postmarkapp.com

smtp.postmarkapp.com

fyi.postmarkapp.com

imap1.postmarkapp.com

mx1-iad.postmarkapp.com

sc-ord-api2.postmarkapp.com

dmarc.postmarkapp.com

mail2.postmarkapp.com

pmr-aws-use2-p.postmarkapp.com

p-pm-inbound03-pktsjc1-mx.postmarkapp.com

staging2-inbound.postmarkapp.com

mail.postmarkapp.com

ingress-proxy-marketing-us-east-2.postmarkapp.com

inbound.postmarkapp.com

spamcheck.postmarkapp.com

mx1.postmarkapp.com

web.postmarkapp.com

staging-bounces.postmarkapp.com

p-pm-inbound02-pktsjc1-mx.postmarkapp.com

inbound2.postmarkapp.com

p-pm-inbound01-pktsjc1-mx.postmarkapp.com

p-pm-inbound02-pktewr1-mx.postmarkapp.com

staging.postmarkapp.com

danveem.postmarkapp.com

account.postmarkapp.com

api.postmarkapp.com

www.postmarkapp.com

p-pm-inbound01-pktewr1-mx.postmarkapp.com

send.postmarkapp.com

nrw.postmarkapp.com

ea.postmarkapp.com

webmail.postmarkapp.com

Same first word

postmarkapp.net

postmarkapp.com

DNS History

21 records (10 active, 11 former)

●NSns-1262.awsdns-29.org2019-09-01 → 2026-07-04 · 3 obs

○ 2018-09-08 02:02:20
● 2019-09-01 15:59:36
● 2026-07-04 22:41:16

○NSns-1520.awsdns-62.org2018-09-08 → 2018-09-08 · 4 obs

○ 2017-08-29 20:05:46
● 2018-09-08 02:02:20
○ 2019-09-01 15:59:36
○ 2026-07-04 22:41:16

○NSns-156.awsdns-19.com2018-09-08 → 2018-09-08 · 4 obs

○ 2017-08-29 20:05:46
● 2018-09-08 02:02:20
○ 2019-09-01 15:59:36
○ 2026-07-04 22:41:16

●NSns-1657.awsdns-15.co.uk2019-09-01 → 2026-07-04 · 3 obs

○ 2018-09-08 02:02:20
● 2019-09-01 15:59:36
● 2026-07-04 22:41:16

○NSns-1785.awsdns-31.co.uk2018-09-08 → 2018-09-08 · 4 obs

○ 2017-08-29 20:05:46
● 2018-09-08 02:02:20
○ 2019-09-01 15:59:36
○ 2026-07-04 22:41:16

●NSns-229.awsdns-28.com2019-09-01 → 2026-07-04 · 3 obs

○ 2018-09-08 02:02:20
● 2019-09-01 15:59:36
● 2026-07-04 22:41:16

○NSns-664.awsdns-19.net2018-09-08 → 2018-09-08 · 4 obs

○ 2017-08-29 20:05:46
● 2018-09-08 02:02:20
○ 2019-09-01 15:59:36
○ 2026-07-04 22:41:16

●NSns-721.awsdns-26.net2019-09-01 → 2026-07-04 · 3 obs

○ 2018-09-08 02:02:20
● 2019-09-01 15:59:36
● 2026-07-04 22:41:16

○NSns1.p11.dynect.net2015-08-20 → 2017-08-29 · 4 obs

● 2015-08-20 14:45:28
● 2017-08-29 20:05:46
○ 2018-09-08 02:02:20
○ 2026-07-04 22:41:16

○NSns2.p11.dynect.net2015-08-20 → 2017-08-29 · 4 obs

● 2015-08-20 14:45:28
● 2017-08-29 20:05:46
○ 2018-09-08 02:02:20
○ 2026-07-04 22:41:16

○NSns3.p11.dynect.net2015-08-20 → 2017-08-29 · 4 obs

● 2015-08-20 14:45:28
● 2017-08-29 20:05:46
○ 2018-09-08 02:02:20
○ 2026-07-04 22:41:16

○NSns4.p11.dynect.net2015-08-20 → 2017-08-29 · 4 obs

● 2015-08-20 14:45:28
● 2017-08-29 20:05:46
○ 2018-09-08 02:02:20
○ 2026-07-04 22:41:16

●MXalt1.aspmx.l.google.com2015-08-20 → 2026-07-04 · 2 obs

● 2015-08-20 14:45:28
● 2026-07-04 22:41:16

●MXalt2.aspmx.l.google.com2015-08-20 → 2026-07-04 · 2 obs

● 2015-08-20 14:45:28
● 2026-07-04 22:41:16

●MXaspmx.l.google.com2015-08-20 → 2026-07-04 · 2 obs

● 2015-08-20 14:45:28
● 2026-07-04 22:41:16

●MXaspmx2.googlemail.com2015-08-20 → 2026-07-04 · 2 obs

● 2015-08-20 14:45:28
● 2026-07-04 22:41:16

●MXaspmx3.googlemail.com2015-08-20 → 2026-07-04 · 2 obs

● 2015-08-20 14:45:28
● 2026-07-04 22:41:16

○A159.203.80.762021-10-30 → 2021-11-01 · 5 obs

○ 2019-11-02 19:22:20
● 2021-10-30 13:08:12
● 2021-11-01 04:13:00
○ 2026-02-18 11:58:00
○ 2026-07-04 22:41:16

○A45.55.76.1022016-03-08 → 2019-11-02 · 5 obs

○ 2016-01-31 20:18:24
● 2016-03-08 00:25:20
● 2019-11-02 19:22:20
○ 2021-10-30 13:08:12
○ 2026-07-04 22:41:16

○A50.31.156.1102015-08-20 → 2016-01-31 · 4 obs

● 2015-08-20 14:45:28
● 2016-01-31 20:18:24
○ 2016-03-08 00:25:20
○ 2026-07-04 22:41:16

●A94.247.142.12026-02-18 → 2026-07-04 · 3 obs

○ 2021-11-01 04:13:00
● 2026-02-18 11:58:00
● 2026-07-04 22:41:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
postmarkapp.com	ns-229.awsdns-28.com, ns-721.awsdns-26.net, ns-1657.awsdns-15.co.uk, ns-1262.awsdns-29.org	2 records

✅ Authoritative Response

Server:205.251.196.238

NS records: ns-229.awsdns-28.com, ns-721.awsdns-26.net, ns-1657.awsdns-15.co.uk, ns-1262.awsdns-29.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for postmarkapp.com (unsigned zone)

⏱️ Timing

Total: 294ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`94.247.142.1`
NS	4	`ns-1262.awsdns-29.org, ns-1657.awsdns-15.co.uk...`
MX	5	`aspmx.l.google.com (pri: 10), alt1.aspmx.l.google.com (pri: 20)...`
TXT	7	`01a65dddcd764010b6df567c88b8fb7d, abuseipdb-verification=QzehCZYK...`
SOA	1	`ns-1262.awsdns-29.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-229.awsdns-28.com, ns-229.awsdns-28.com)

Analysis

Hierarchy

Among the subdomains of postmarkapp.com are p-pm-inbound03-pktewr1-mx.postmarkapp.com, mx.postmarkapp.com, rebound.postmarkapp.com, pop3.postmarkapp.com, assets.postmarkapp.com and a few other host names.

IP Addresses

postmarkapp.com resolves to just one IP address, 94.247.142.1.

Two other host names, along with culanth.org, wiltshirecreative.co.uk and ikt.nl, also share IP numbers with postmarkapp.com.

Name Servers

The NS records for postmarkapp.com point to four name servers: ns-229.awsdns-28.com, ns-721.awsdns-26.net, ns-1262.awsdns-29.org and ns-1657.awsdns-15.co.uk.

There is at least partial name server overlap between postmarkapp.com and other domains — privateaviationsolutions.com, rehtona.net, d1oy8rzcuotmre.cloudfront.net and two more among them.

All four hostnames — ns-229.awsdns-28.com, ns-721.awsdns-26.net, ns-1262.awsdns-29.org and ns-1657.awsdns-15.co.uk — resolve to two IP numbers apiece: ns-229.awsdns-28.com to 205.251.192.229 and 2600:9000:5300:e500::1; ns-721.awsdns-26.net to 205.251.194.209 and 2600:9000:5302:d100::1; ns-1262.awsdns-29.org to 205.251.196.238 and 2600:9000:5304:ee00::1; ns-1657.awsdns-15.co.uk to 205.251.198.121 and 2600:9000:5306:7900::1.

Mail Servers

Five mail servers handle postmarkapp.com: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.

There is at least a partial MX overlap between postmarkapp.com and other domains, including scopwick.com, ns500671.ns500742.ns500731.ns500754.ns500754.ns500704.ns500742.ns500671.ns500704.ns500671.ns500671.ns500649.ns500649.ns500291.ns500131.lustychickser.com, ns500731.ns500742.ns500731.ns500754.ns500671.ns500705.ns500704.ns500688.ns500291.ns500671.ns500649.lustychickser.com and two others.

These mail servers tend to appear in combination with mail servers alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 others.

Host names that have two IP addresses:

aspmx2.googlemail.com points to 108.177.123.26 and 2800:3f0:4003:c0f::1a.

aspmx3.googlemail.com points to 172.253.116.27 and 2a00:1450:400b:c02::1b.

aspmx.l.google.com points to 142.251.179.26 and 2607:f8b0:4004:c29::1b.

alt1.aspmx.l.google.com points to 108.177.123.26 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com points to 172.253.116.27 and 2a00:1450:400b:c02::1a.

aspmx2.googlemail.com and alt1.aspmx.l.google.com are host names that each point to 2800:3f0:4003:c0f::1a IP addresses.

aspmx2.googlemail.com and alt1.aspmx.l.google.com are host names that each point to 108.177.123.26 IP addresses.

aspmx3.googlemail.com and alt2.aspmx.l.google.com are host names that each point to 172.253.116.27 IP addresses.