postmarkapp.net - dns.ninja

`postmarkapp.net`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:1504^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:c344^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.21.4^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.195.68^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`peaches.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26ef^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`peaches.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2ef^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`peaches.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22ef^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`peaches.ns.cloudflare.com`
		A	108.162.194.239^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`peaches.ns.cloudflare.com`
		A	162.159.38.239^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`peaches.ns.cloudflare.com`
		A	172.64.34.239^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`peaches.ns.cloudflare.com`
NS	`yichun.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bf8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yichun.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1f8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`yichun.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21f8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`yichun.ns.cloudflare.com`
		A	108.162.193.248^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yichun.ns.cloudflare.com`
		A	172.64.33.248^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yichun.ns.cloudflare.com`
		A	173.245.59.248^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yichun.ns.cloudflare.com`
MX	`route1.mx.cloudflare.net` ⭐
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`route3.mx.cloudflare.net`⁽⁶⁷⁾
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
MX	`route2.mx.cloudflare.net`⁽⁹¹⁾
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.21.4, 172.67.195.68
		IPv6 hints	2606:4700:3033::6815:1504, 2606:4700:3037::ac43:c344
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=207, name=cloudflare-ech.com
SOA	`peaches.ns.cloudflare.com`dns@cloudflare.com serial=2407090184

`net`

	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=1783209451

⚠️ On DNS blocklist: tif

Subdomains

www.postmarkapp.net

Same first word

postmarkapp.com

postmarkapp.net

DNS History

11 records (9 active, 2 former)

●NSpeaches.ns.cloudflare.com2026-04-26 → 2026-07-05 · 2 obs

● 2026-04-26 04:04:44
● 2026-07-05 00:03:06

●NSyichun.ns.cloudflare.com2026-04-26 → 2026-07-05 · 2 obs

● 2026-04-26 04:04:44
● 2026-07-05 00:03:06

●MXroute1.mx.cloudflare.net2026-04-26 → 2026-07-05 · 2 obs

● 2026-04-26 04:04:44
● 2026-07-05 00:03:06

●MXroute2.mx.cloudflare.net2026-04-26 → 2026-07-05 · 2 obs

● 2026-04-26 04:04:44
● 2026-07-05 00:03:06

●MXroute3.mx.cloudflare.net2026-04-26 → 2026-07-05 · 2 obs

● 2026-04-26 04:04:44
● 2026-07-05 00:03:06

●A104.21.21.42026-04-26 → 2026-07-05 · 2 obs

● 2026-04-26 04:04:44
● 2026-07-05 00:03:06

●A172.67.195.682026-04-26 → 2026-07-05 · 2 obs

● 2026-04-26 04:04:44
● 2026-07-05 00:03:06

○A2606:4700:3032::6815:15042026-04-26 → 2026-06-06 · 3 obs

● 2026-04-26 04:04:44
● 2026-06-06 19:16:36
○ 2026-07-05 00:03:06

○A2606:4700:3032::ac43:c3442026-04-26 → 2026-06-06 · 3 obs

● 2026-04-26 04:04:44
● 2026-06-06 19:16:36
○ 2026-07-05 00:03:06

●A2606:4700:3033::6815:15042026-07-05 → 2026-07-05 · 2 obs

○ 2026-06-06 19:16:36
● 2026-07-05 00:03:06

●A2606:4700:3037::ac43:c3442026-07-05 → 2026-07-05 · 2 obs

○ 2026-06-06 19:16:36
● 2026-07-05 00:03:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
postmarkapp.net	yichun.ns.cloudflare.com, peaches.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.38.239

NS records: yichun.ns.cloudflare.com, peaches.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for postmarkapp.net (unsigned zone)

⏱️ Timing

Total: 562ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.21.4, 172.67.195.68`
AAAA	2	`2606:4700:3033::6815:1504, 2606:4700:3037::ac43:c344`
NS	2	`peaches.ns.cloudflare.com, yichun.ns.cloudflare.com`
MX	3	`route1.mx.cloudflare.net (pri: 66), route3.mx.cloudflare.net (pri: 67)...`
TXT	1	`v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`peaches.ns.cloudflare.com dns.cloudflare`

Analysis

Hierarchy

The domain www.postmarkapp.net falls under the parent postmarkapp.net.

IP Addresses

postmarkapp.net points to the four IP addresses 104.21.21.4, 172.67.195.68, 2606:4700:3033::6815:1504 and 2606:4700:3037::ac43:c344.

svgdogs.com, www.verificacion-vehicular.com.mx.cdn.cloudflare.net, www.phim(0x736578)vietb.com and two other host names share IP numbers with postmarkapp.net.

Name Servers

postmarkapp.net has two authoritative name servers — peaches.ns.cloudflare.com and yichun.ns.cloudflare.com.

postmarkapp.net uses the same name servers as several other domains — among them britainsheritage.co.uk, sventamm.com, counterexamples.info and two more.

At least some of postmarkapp.net's name servers are shared with other domains, for example rigel1.com, claimer.site, drill-battery.com.au and two more.

These name servers tend to be deployed in combination with the name servers jaime.ns.cloudflare.com and theo.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

peaches.ns.cloudflare.com points to 108.162.194.239, 162.159.38.239, 172.64.34.239 and 3 other IP addresses.

yichun.ns.cloudflare.com points to 108.162.193.248, 172.64.33.248, 173.245.59.248 and 3 other IP addresses.

Mail Servers

The MX records for postmarkapp.net list three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

postmarkapp.net has at least partial mail server overlap with other domains such as zonatic.mx, chore.ninja, mzansifun.com and two more.

Hostnames that resolve to 6 IP addresses:

route1.mx.cloudflare.net points to 162.159.205.11, 162.159.205.12, 162.159.205.13 and 3 other IP addresses.

route2.mx.cloudflare.net points to 162.159.205.17, 162.159.205.18, 162.159.205.19 and 3 other IP addresses.

route3.mx.cloudflare.net points to 162.159.205.23, 162.159.205.24, 162.159.205.25 and 3 other IP addresses.