`qcstd.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:a196^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:4167^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.65.103^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.161.150^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`brit.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a4e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brit.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c04e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`brit.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:204e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`brit.ns.cloudflare.com`
		A	108.162.192.78^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brit.ns.cloudflare.com`
		A	172.64.32.78^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brit.ns.cloudflare.com`
		A	173.245.58.78^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brit.ns.cloudflare.com`
NS	`ivan.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b78^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c178^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ivan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2178^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ivan.ns.cloudflare.com`
		A	108.162.193.120^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
		A	172.64.33.120^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
		A	173.245.59.120^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
MX	`mail.qcstd.com` ⭐
		A	91.236.255.161^{🇫🇷 TECHCREA-SOLUTIONS91.236.255.0/24}
			PTR	`r.qcstd.com`
TXT	`v=spf1 ip4:86.104.252.74 mx ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.65.103, 172.67.161.150
		IPv6	2606:4700:3031::ac43:a196, 2606:4700:3035::6815:4167
SOA	`brit.ns.cloudflare.com`dns@cloudflare.com serial=2399766245

`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=1774434762

Subdomains

mail.qcstd.com

Same first word

qcstd.com

Similar names

qctsd.com

qdsct.cn

qdtsc.com

dcqst.com

cqdst.cn

cdtqs.cn

cqsdt.com

sdqtc.com

tdqcs.com

stdcq.com

cdqst.com

cstqd.com

DNS History

10 records (7 active, 3 former)

●NSbrit.ns.cloudflare.com2026-03-21 → 2026-03-25 · 3 obs

○ 2017-11-29 18:23:32
● 2026-03-21 12:36:16
● 2026-03-25 10:41:24

●NSivan.ns.cloudflare.com2026-03-21 → 2026-03-25 · 3 obs

○ 2017-11-29 18:23:32
● 2026-03-21 12:36:16
● 2026-03-25 10:41:24

○NSns1.dnsdun.net2016-12-20 → 2016-12-20 · 3 obs

● 2016-12-20 22:34:20
○ 2017-11-29 18:23:32
○ 2026-03-25 10:41:24

○NSns3.dnsdun.com2016-12-20 → 2016-12-20 · 3 obs

● 2016-12-20 22:34:20
○ 2017-11-29 18:23:32
○ 2026-03-25 10:41:24

●MXmail.qcstd.com2026-03-21 → 2026-03-25 · 2 obs

● 2026-03-21 12:36:16
● 2026-03-25 10:41:24

●A104.21.65.1032026-03-21 → 2026-03-25 · 3 obs

○ 2017-11-29 18:23:32
● 2026-03-21 12:36:16
● 2026-03-25 10:41:24

●A172.67.161.1502026-03-21 → 2026-03-25 · 3 obs

○ 2017-11-29 18:23:32
● 2026-03-21 12:36:16
● 2026-03-25 10:41:24

○A198.204.249.1462016-12-20 → 2016-12-20 · 3 obs

● 2016-12-20 22:34:20
○ 2017-11-29 18:23:32
○ 2026-03-25 10:41:24

●A2606:4700:3031::ac43:a1962026-03-21 → 2026-03-25 · 3 obs

○ 2017-11-29 18:23:32
● 2026-03-21 12:36:16
● 2026-03-25 10:41:24

●A2606:4700:3035::6815:41672026-03-21 → 2026-03-25 · 3 obs

○ 2017-11-29 18:23:32
● 2026-03-21 12:36:16
● 2026-03-25 10:41:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, k.gtld-servers.net, i.gtld-servers.net, g.gtld-servers.net...	-
qcstd.com	ivan.ns.cloudflare.com, brit.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.120

NS records: ivan.ns.cloudflare.com, brit.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for qcstd.com (unsigned zone)

⏱️ Timing

Total: 220ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.161.150, 104.21.65.103`
AAAA	2	`2606:4700:3035::6815:4167, 2606:4700:3031::ac43:a196`
NS	2	`brit.ns.cloudflare.com, ivan.ns.cloudflare.com`
MX	1	`mail.qcstd.com (pri: 10)`
TXT	1	`v=spf1 ip4:86.104.252.74 mx ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`brit.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

The parent of mail.qcstd.com is qcstd.com.

IP Addresses

qcstd.com points to four IP numbers: 2606:4700:3031::ac43:a196, 2606:4700:3035::6815:4167, 104.21.65.103 and 172.67.161.150.

Other host names, for instance draw0.com, cargosmd.com, hritsco.com, chengsen.net and mail.croatiatrip.net share IP numbers with qcstd.com.

Name Servers

qcstd.com is delegated to two name servers: brit.ns.cloudflare.com and ivan.ns.cloudflare.com.

qcstd.com uses the same name server setup as other domains, for instance themarlborougharms.co.uk, ashing.com, mulchxpress.com.au, michaeleisemann.com and thailetgo.com.

qcstd.com shares name servers with other domains at least partially, for instance advmp.com, coloradoriveradventures.com, s3smiles.com, jinbei.net.au and xn--21b8bm.com.

these name servers are often used together with the name servers micah.ns.cloudflare.com.

Host names with six IP numbers: brit.ns.cloudflare.com points to 2606:4700:50::adf5:3a4e, 2803:f800:50::6ca2:c04e, 2a06:98c1:50::ac40:204e, 108.162.192.78, 172.64.32.78 and 173.245.58.78; ivan.ns.cloudflare.com points to 2606:4700:58::adf5:3b78, 2803:f800:50::6ca2:c178, 2a06:98c1:50::ac40:2178, 108.162.193.120, 172.64.33.120 and 173.245.59.120.

Mail Servers

The mail server for qcstd.com is mail.qcstd.com.

qcstd.com uses the same mail server setup as other domains, for example ibout.me.

Host name mail.qcstd.com resolves to IP 91.236.255.161.

qcstd.com - robtex.com

qcstd.com

com

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`qcstd.com`

`com`