`do-smarter.com`

DNSSEC	⚠️ Not signed
A	150.136.244.247^{🇺🇸 ORACLE-OCI-31898150.136.0.0/16 Oracle Corporation}
		PTR	`mail.linsyscloud.com`
NS	`serenity.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:266c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serenity.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c26c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`serenity.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:226c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`serenity.ns.cloudflare.com`
		A	108.162.194.108^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serenity.ns.cloudflare.com`
		A	162.159.38.108^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serenity.ns.cloudflare.com`
		A	172.64.34.108^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serenity.ns.cloudflare.com`
NS	`woz.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b96^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c196^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`woz.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2196^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`woz.ns.cloudflare.com`
		A	108.162.193.150^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
		A	172.64.33.150^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
		A	173.245.59.150^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
MX	`mx1.feishu.cn` ⭐
		A	52.220.106.220^{🇸🇬 Amazon52.220.0.0/15 SIN prefix}
			PTR	`ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com`
MX	`mx2.feishu.cn`⁽⁵⁾
		A	101.126.58.225^{🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	122.14.229.0^{🇨🇳 CHINAMOBILE-CN122.14.224.0/20}
MX	`mx3.feishu.cn`⁽¹⁰⁾
		A	52.220.106.220^{🇸🇬 Amazon52.220.0.0/15 SIN prefix}
			PTR	`ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com`
		A	101.126.58.225^{🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	122.14.229.0^{🇨🇳 CHINAMOBILE-CN122.14.224.0/20}
TXT	`v=spf1 +include:_netblocks.m.feishu.cn -all`
TXT	`verification-code-site-App_feishu=XUiiZt1gq5UmoKYGiRCy`
SOA	`serenity.ns.cloudflare.com`dns@cloudflare.com serial=2403570140

`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=1778568446

Same first word

do-smarter.com

DNS History

9 records (6 active, 3 former)

○NSdns21.hichina.com2018-06-12 → 2018-06-12 · 3 obs

● 2018-06-12 14:48:32
○ 2026-03-20 16:33:36
○ 2026-05-12 06:59:16

●NSserenity.ns.cloudflare.com2026-03-20 → 2026-05-12 · 3 obs

○ 2018-06-12 14:48:32
● 2026-03-20 16:33:36
● 2026-05-12 06:59:16

●NSwoz.ns.cloudflare.com2026-03-20 → 2026-05-12 · 3 obs

○ 2018-06-12 14:48:32
● 2026-03-20 16:33:36
● 2026-05-12 06:59:16

●MXmx1.feishu.cn2026-03-20 → 2026-05-12 · 3 obs

○ 2018-06-12 14:48:32
● 2026-03-20 16:33:36
● 2026-05-12 06:59:16

●MXmx2.feishu.cn2026-03-20 → 2026-05-12 · 3 obs

○ 2018-06-12 14:48:32
● 2026-03-20 16:33:36
● 2026-05-12 06:59:16

●MXmx3.feishu.cn2026-03-20 → 2026-05-12 · 3 obs

○ 2018-06-12 14:48:32
● 2026-03-20 16:33:36
● 2026-05-12 06:59:16

○MXmxn.mxhichina.com2018-06-12 → 2018-06-12 · 3 obs

● 2018-06-12 14:48:32
○ 2026-03-20 16:33:36
○ 2026-05-12 06:59:16

○MXmxw.mxhichina.com2018-06-12 → 2018-06-12 · 3 obs

● 2018-06-12 14:48:32
○ 2026-03-20 16:33:36
○ 2026-05-12 06:59:16

●A150.136.244.2472026-03-20 → 2026-05-12 · 2 obs

● 2026-03-20 16:33:36
● 2026-05-12 06:59:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, h.gtld-servers.net, m.gtld-servers.net, j.gtld-servers.net...	-
do-smarter.com	woz.ns.cloudflare.com, serenity.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.150

NS records: woz.ns.cloudflare.com, serenity.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for do-smarter.com (unsigned zone)

⏱️ Timing

Total: 313ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`150.136.244.247`
NS	2	`serenity.ns.cloudflare.com, woz.ns.cloudflare.com`
MX	3	`mx1.feishu.cn (pri: 1), mx3.feishu.cn (pri: 10)...`
TXT	2	`v=spf1 +include:_netblocks.m.feishu.cn -, verification-code-site-App_feishu=XUiiZt`
SOA	1	`serenity.ns.cloudflare.com dns.cloudflar`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

do-smarter.com points to a single IP: 150.136.244.247.

Name Servers

Two name servers serenity.ns.cloudflare.com and woz.ns.cloudflare.com handle delegation for do-smarter.com.

do-smarter.com uses the same name server setup as other domains, for example sageinstitute.org, heydomain.com, kmacho.co.ke, thme.com and cyndia.in.

do-smarter.com partially shares name servers with other domains; examples include rtp-gacordora.pages.dev, 28as.com, me-se.xyz, ushk.news and urban-tan.com.

These name servers are often used with the name servers brad.ns.cloudflare.com and amir.ns.cloudflare.com.

Host names with six IP numbers: serenity.ns.cloudflare.com points to: 2606:4700:50::a29f:266c, 2803:f800:50::6ca2:c26c, 2a06:98c1:50::ac40:226c, 108.162.194.108, 162.159.38.108 and 172.64.34.108; woz.ns.cloudflare.com points to: 2606:4700:58::adf5:3b96, 2803:f800:50::6ca2:c196, 2a06:98c1:50::ac40:2196, 108.162.193.150, 172.64.33.150 and 173.245.59.150.

Mail Servers

do-smarter.com is handled by three mail servers: mx1.feishu.cn, mx2.feishu.cn and mx3.feishu.cn.

do-smarter.com shares some mail servers with other domains, at least partially, such as ascendconsultantltd.com, wewantbest.com, ui-tech.cn, unitcc.com and xlinker.net.