`smart521.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::6815:26ca^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:8a50^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.38.202^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.138.80^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`marlowe.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26d4^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marlowe.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2d4^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`marlowe.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22d4^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`marlowe.ns.cloudflare.com`
		A	108.162.194.212^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marlowe.ns.cloudflare.com`
		A	162.159.38.212^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marlowe.ns.cloudflare.com`
		A	172.64.34.212^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marlowe.ns.cloudflare.com`
NS	`weston.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c8a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`weston.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c38a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`weston.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:238a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`weston.ns.cloudflare.com`
		A	108.162.195.138^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`weston.ns.cloudflare.com`
		A	162.159.44.138^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`weston.ns.cloudflare.com`
		A	172.64.35.138^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`weston.ns.cloudflare.com`
HTTPS	HTTP/2 ✓ hints match
		IPv4 hints	104.21.38.202, 172.67.138.80
		IPv6 hints	2606:4700:3035::6815:26ca, 2606:4700:3037::ac43:8a50
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=221, name=cloudflare-ech.com
SOA	`marlowe.ns.cloudflare.com`dns@cloudflare.com serial=2399296845

`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=1776128457

Same first word

smart521.com

DNS History

15 records (6 active, 9 former)

●NSmarlowe.ns.cloudflare.com2026-02-26 → 2026-04-14 · 3 obs

○ 2018-08-27 10:44:54
● 2026-02-26 02:11:12
● 2026-04-14 01:21:14

○NSns1.51dns.com2015-06-28 → 2018-08-27 · 6 obs

● 2015-06-28 18:27:12
● 2016-02-07 20:59:46
○ 2017-01-07 14:26:20
● 2018-08-27 10:44:54
○ 2026-02-26 02:11:12
○ 2026-04-14 01:21:14

○NSns2.51dns.com2015-06-28 → 2018-08-27 · 6 obs

● 2015-06-28 18:27:12
● 2016-02-07 20:59:46
○ 2017-01-07 14:26:20
● 2018-08-27 10:44:54
○ 2026-02-26 02:11:12
○ 2026-04-14 01:21:14

●NSweston.ns.cloudflare.com2026-02-26 → 2026-04-14 · 3 obs

○ 2018-08-27 10:44:54
● 2026-02-26 02:11:12
● 2026-04-14 01:21:14

○A104.151.78.1152015-06-28 → 2015-06-28 · 3 obs

● 2015-06-28 18:27:12
○ 2018-08-27 10:44:54
○ 2026-04-14 01:21:14

●A104.21.38.2022026-02-26 → 2026-04-14 · 4 obs

○ 2018-08-27 10:44:54
● 2026-02-26 02:11:12
○ 2026-03-25 12:17:50
● 2026-04-14 01:21:14

○A172.252.96.1772017-01-07 → 2018-08-27 · 5 obs

○ 2016-02-07 20:59:46
● 2017-01-07 14:26:20
● 2018-08-27 10:44:54
○ 2026-02-26 02:11:12
○ 2026-04-14 01:21:14

●A172.67.138.802026-02-26 → 2026-04-14 · 4 obs

○ 2018-08-27 10:44:54
● 2026-02-26 02:11:12
○ 2026-03-25 12:17:50
● 2026-04-14 01:21:14

○A188.114.96.02026-03-25 → 2026-03-25 · 3 obs

○ 2026-02-26 02:11:12
● 2026-03-25 12:17:50
○ 2026-04-14 01:21:14

○A188.114.97.02026-03-25 → 2026-03-25 · 3 obs

○ 2026-02-26 02:11:12
● 2026-03-25 12:17:50
○ 2026-04-14 01:21:14

○A23.104.145.2332015-11-14 → 2016-02-07 · 5 obs

○ 2015-06-28 18:27:12
● 2015-11-14 03:42:18
● 2016-02-07 20:59:46
○ 2017-01-07 14:26:20
○ 2026-04-14 01:21:14

●A2606:4700:3035::6815:26ca2026-02-26 → 2026-04-14 · 4 obs

○ 2018-08-27 10:44:54
● 2026-02-26 02:11:12
○ 2026-03-25 12:17:50
● 2026-04-14 01:21:14

●A2606:4700:3037::ac43:8a502026-02-26 → 2026-04-14 · 4 obs

○ 2018-08-27 10:44:54
● 2026-02-26 02:11:12
○ 2026-03-25 12:17:50
● 2026-04-14 01:21:14

○A2a06:98c1:3120::2026-03-25 → 2026-03-25 · 3 obs

○ 2026-02-26 02:11:12
● 2026-03-25 12:17:50
○ 2026-04-14 01:21:14

○A2a06:98c1:3121::2026-03-25 → 2026-03-25 · 3 obs

○ 2026-02-26 02:11:12
● 2026-03-25 12:17:50
○ 2026-04-14 01:21:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
smart521.com	marlowe.ns.cloudflare.com, weston.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.138

NS records: marlowe.ns.cloudflare.com, weston.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for smart521.com (unsigned zone)

⏱️ Timing

Total: 119ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.38.202, 172.67.138.80`
AAAA	2	`2606:4700:3037::ac43:8a50, 2606:4700:3035::6815:26ca`
NS	2	`marlowe.ns.cloudflare.com, weston.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`marlowe.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

smart521.com resolves to four IPs: 2606:4700:3035::6815:26ca, 2606:4700:3037::ac43:8a50, 104.21.38.202 and 172.67.138.80.

Other host names, for instance mentalpower.us, haofood.com.cn, arerozone1.com, cnia-sg.com and weluvny.com share IP numbers with smart521.com.

Name Servers

smart521.com has two name servers: marlowe.ns.cloudflare.com and weston.ns.cloudflare.com.

smart521.com shares the same name server setup as other domains, for example hnrjlawyer.com, fsrenke.com, dqzgl.com, crt-china.com and hdsjwj.com.

smart521.com shares some name servers with other domains, for example coomer.org, genostire.com, fetalmedicine.com, katrielwidjaja.com and 0001050.com.

These name servers are often used together with zita.ns.cloudflare.com, josephine.ns.cloudflare.com and lars.ns.cloudflare.com.

Host names with six IP numbers: marlowe.ns.cloudflare.com points to: 2606:4700:50::a29f:26d4, 2803:f800:50::6ca2:c2d4, 2a06:98c1:50::ac40:22d4, 108.162.194.212, 162.159.38.212 and 172.64.34.212; weston.ns.cloudflare.com points to: 2606:4700:58::a29f:2c8a, 2803:f800:50::6ca2:c38a, 2a06:98c1:50::ac40:238a, 108.162.195.138, 162.159.44.138 and 172.64.35.138.

smart521.com - robtex.com

smart521.com

com

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

`smart521.com`

`com`