`postbacksapp.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:2c89^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:c895^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.44.137^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.200.149^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`john.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3bb9^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`john.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1b9^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`john.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21b9^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`john.ns.cloudflare.com`
		A	108.162.193.185^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`john.ns.cloudflare.com`
		A	172.64.33.185^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`john.ns.cloudflare.com`
		A	173.245.59.185^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`john.ns.cloudflare.com`
NS	`melany.ns.cloudflare.com`
		A	2606:4700:50::a29f:268a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melany.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c28a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`melany.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:228a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`melany.ns.cloudflare.com`
		A	108.162.194.138^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melany.ns.cloudflare.com`
		A	162.159.38.138^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melany.ns.cloudflare.com`
		A	172.64.34.138^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melany.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.44.137, 172.67.200.149
		IPv6 hints	2606:4700:3031::6815:2c89, 2606:4700:3037::ac43:c895
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=251, name=cloudflare-ech.com
SOA	`john.ns.cloudflare.com`dns@cloudflare.com serial=2409557897

`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=1785724317

📈 Tranco rank: #438,402

Subdomains

cdn.postbacksapp.com

Same first word

postbacksapp.com

DNS History

8 records (6 active, 2 former)

●NSjohn.ns.cloudflare.com2026-05-17 → 2026-08-03 · 2 obs

● 2026-05-17 05:42:46
● 2026-08-03 02:52:48

●NSmelany.ns.cloudflare.com2026-05-17 → 2026-08-03 · 2 obs

● 2026-05-17 05:42:46
● 2026-08-03 02:52:48

●A104.21.44.1372026-05-17 → 2026-08-03 · 2 obs

● 2026-05-17 05:42:46
● 2026-08-03 02:52:48

●A172.67.200.1492026-05-17 → 2026-08-03 · 2 obs

● 2026-05-17 05:42:46
● 2026-08-03 02:52:48

●A2606:4700:3031::6815:2c892026-08-03 → 2026-08-03 · 2 obs

○ 2026-06-14 16:52:34
● 2026-08-03 02:52:48

○A2606:4700:3032::6815:2c892026-05-17 → 2026-06-14 · 3 obs

● 2026-05-17 05:42:46
● 2026-06-14 16:52:34
○ 2026-08-03 02:52:48

○A2606:4700:3036::ac43:c8952026-05-17 → 2026-06-14 · 3 obs

● 2026-05-17 05:42:46
● 2026-06-14 16:52:34
○ 2026-08-03 02:52:48

●A2606:4700:3037::ac43:c8952026-08-03 → 2026-08-03 · 2 obs

○ 2026-06-14 16:52:34
● 2026-08-03 02:52:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, a.gtld-servers.net, i.gtld-servers.net, k.gtld-servers.net...	-
postbacksapp.com	john.ns.cloudflare.com, melany.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.138

NS records: john.ns.cloudflare.com, melany.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for postbacksapp.com (unsigned zone)

⏱️ Timing

Total: 165ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.200.149, 104.21.44.137`
AAAA	2	`2606:4700:3031::6815:2c89, 2606:4700:3037::ac43:c895`
NS	2	`john.ns.cloudflare.com, melany.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`john.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

postbacksapp.com is a parent domain of cdn.postbacksapp.com.

IP Addresses

postbacksapp.com has four IP addresses: 104.21.44.137, 172.67.200.149, 2606:4700:3031::6815:2c89 and 2606:4700:3037::ac43:c895.

Two other host names, along with nexussynthenterprise.click, skeeet.me and basecenter.click, also share IP numbers with postbacksapp.com.

Name Servers

The NS records for postbacksapp.com delegate to john.ns.cloudflare.com and melany.ns.cloudflare.com.

postbacksapp.com shares its NS records with other domains, for example sumuran-tapselkab.desa.id, aircompressorsliverpool-co-uk.pages.dev, aircompressorspeterborough-co-uk.pages.dev and two others.

postbacksapp.com shares at least some of its name servers with other domains, including webdicate.com, bangbangsa.com, 4x4megaworld.co.za and two others.

These name servers are frequently paired with the name servers princess.ns.cloudflare.com, ganz.ns.cloudflare.com and stella.ns.cloudflare.com.

DNS names with 6 IP addresses:

john.ns.cloudflare.com maps to 108.162.193.185, 172.64.33.185, 173.245.59.185 and 3 additional IP addresses.

melany.ns.cloudflare.com maps to 108.162.194.138, 162.159.38.138, 172.64.34.138 and 3 additional IP addresses.

postbacksapp.com - robtex.com