stackoptimiselab.com - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`stackoptimiselab.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:5b27^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:d185^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.91.39^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.209.133^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`doug.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b9f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`doug.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c19f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`doug.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:219f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`doug.ns.cloudflare.com`
		A	108.162.193.159^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`doug.ns.cloudflare.com`
		A	172.64.33.159^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`doug.ns.cloudflare.com`
		A	173.245.59.159^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`doug.ns.cloudflare.com`
NS	`melody.ns.cloudflare.com`
		A	2606:4700:50::a29f:26fa^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melody.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2fa^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`melody.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22fa^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`melody.ns.cloudflare.com`
		A	108.162.194.250^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melody.ns.cloudflare.com`
		A	162.159.38.250^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melody.ns.cloudflare.com`
		A	172.64.34.250^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melody.ns.cloudflare.com`
MX	`smtp.google.com` ⭐
		A	2607:f8b0:4004:c17::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bl-in-f27.1e100.net`
		A	2607:f8b0:4004:c23::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f26.1e100.net`
		A	2607:f8b0:4004:c23::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f27.1e100.net`
		A	2607:f8b0:4004:c27::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadsk-in-f26.1e100.net`
		A	142.251.16.27^{🇺🇸 Google142.251.16.0/24}
			PTR	`bl-in-f27.1e100.net`
		A	142.251.179.26^{🇺🇸 Google142.251.179.0/24}
			PTR	`pd-in-f26.1e100.net`
		A	172.253.139.26^{🇺🇸 Google172.253.139.0/24}
			PTR	`yuiadsk-in-f26.1e100.net`
		A	192.178.155.26^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f26.1e100.net`
		A	192.178.155.27^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f27.1e100.net`
TXT	`google-site-verification=ttECVP4yZVu4GnARwbj6bi_TTkQ0LQQZapArqeuC230`
TXT	`v=spf1 include:_spf.google.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.91.39, 172.67.209.133
		IPv6 hints	2606:4700:3031::6815:5b27, 2606:4700:3036::ac43:d185
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=55, name=cloudflare-ech.com
SOA	`doug.ns.cloudflare.com`dns@cloudflare.com serial=2410969669

`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=1787969585

Same first word

stackoptimiselab.com

Previous names

Next names

DNS History

11 records (7 active, 4 former)

●NSdoug.ns.cloudflare.com2026-08-18 → 2026-08-29 · 2 obs

● 2026-08-18 18:33:56
● 2026-08-29 02:29:40

●NSmelody.ns.cloudflare.com2026-08-18 → 2026-08-29 · 2 obs

● 2026-08-18 18:33:56
● 2026-08-29 02:29:40

●MXsmtp.google.com2026-08-18 → 2026-08-29 · 2 obs

● 2026-08-18 18:33:56
● 2026-08-29 02:29:40

●A104.21.91.392026-08-22 → 2026-08-29 · 3 obs

○ 2026-08-18 18:33:56
● 2026-08-22 00:24:04
● 2026-08-29 02:29:40

●A172.67.209.1332026-08-22 → 2026-08-29 · 3 obs

○ 2026-08-18 18:33:56
● 2026-08-22 00:24:04
● 2026-08-29 02:29:40

○A188.114.96.02026-08-18 → 2026-08-18 · 3 obs

● 2026-08-18 18:33:56
○ 2026-08-22 00:24:04
○ 2026-08-29 02:29:40

○A188.114.97.02026-08-18 → 2026-08-18 · 3 obs

● 2026-08-18 18:33:56
○ 2026-08-22 00:24:04
○ 2026-08-29 02:29:40

●A2606:4700:3031::6815:5b272026-08-22 → 2026-08-29 · 3 obs

○ 2026-08-18 18:33:56
● 2026-08-22 00:24:04
● 2026-08-29 02:29:40

●A2606:4700:3036::ac43:d1852026-08-22 → 2026-08-29 · 3 obs

○ 2026-08-18 18:33:56
● 2026-08-22 00:24:04
● 2026-08-29 02:29:40

○A2a06:98c1:3120::2026-08-18 → 2026-08-18 · 3 obs

● 2026-08-18 18:33:56
○ 2026-08-22 00:24:04
○ 2026-08-29 02:29:40

○A2a06:98c1:3121::2026-08-18 → 2026-08-18 · 3 obs

● 2026-08-18 18:33:56
○ 2026-08-22 00:24:04
○ 2026-08-29 02:29:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
stackoptimiselab.com	doug.ns.cloudflare.com, melody.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.250

NS records: doug.ns.cloudflare.com, melody.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stackoptimiselab.com (unsigned zone)

⏱️ Timing

Total: 220ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.91.39, 172.67.209.133`
AAAA	2	`2606:4700:3031::6815:5b27, 2606:4700:3036::ac43:d185`
NS	2	`doug.ns.cloudflare.com, melody.ns.cloudflare.com`
MX	1	`smtp.google.com (pri: 1)`
TXT	2	`google-site-verification=ttECVP4yZVu4GnA, v=spf1 include:_spf.google.com ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`doug.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

stackoptimiselab.com resolves to four IP addresses: 104.21.91.39, 172.67.209.133, 2606:4700:3031::6815:5b27 and 2606:4700:3036::ac43:d185.

Among the host names that share IP numbers with stackoptimiselab.com are 4kosap.top, 13608x.com, mwepartnership.com and two others.

Name Servers

The NS records for stackoptimiselab.com delegate to doug.ns.cloudflare.com and melody.ns.cloudflare.com.

stackoptimiselab.com has the same name server delegation as a number of other domains, such as infrapremium.com, dreambuckspizza.pages.dev, whambambigband.org and two more.

stackoptimiselab.com has at least partial name server overlap with other domains, such as depogembira.com, mongkonbet789.app, gamesveritas.com and two others.

It is common to see these name servers used together with name servers chan.ns.cloudflare.com and adam.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

doug.ns.cloudflare.com maps to 108.162.193.159, 172.64.33.159, 173.245.59.159 and 3 additional IP addresses.

melody.ns.cloudflare.com maps to 108.162.194.250, 162.159.38.250, 172.64.34.250 and 3 additional IP addresses.

Mail Servers

stackoptimiselab.com routes its mail through a single mail server, smtp.google.com.

stackoptimiselab.com has the same mail server arrangement as a number of other domains, for example knackbag.co.th, b2i.events, shavedbygrace.com and two more.

stackoptimiselab.com shares at least some of its mail servers with other domains — for example meijiacademy.com, vestacapital.com.au, yabaianime.com and two more.

These mail servers tend to be used in conjunction with aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two additional mail servers.

smtp.google.com directs to 9 IP numbers, including 142.251.16.27, 142.251.179.26 and 172.253.139.26, along with 6 other.