🛡️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:c21::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pe-in-f26.1e100.net`
		A	2607:f8b0:4004:c21::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pe-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	64.233.180.26^{🇺🇸 Google64.233.180.0/24}
			PTR	`on-in-f26.1e100.net`
			PTR	`pe-in-f26.1e100.net`
		A	64.233.180.27^{🇺🇸 Google64.233.180.0/24}
			PTR	`on-in-f27.1e100.net`
			PTR	`pe-in-f27.1e100.net`
		A	172.253.139.27^{🇺🇸 Google172.253.139.0/24}
			PTR	`yuiadsk-in-f27.1e100.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=124, 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=1787815280

Same first word

stackoptimiselab.com

Previous names

Next names

DNS History

11 records (7 active, 4 former)

●NSdoug.ns.cloudflare.com2026-08-18 → 2026-08-27 · 2 obs

● 2026-08-18 18:33:56
● 2026-08-27 07:52:00

●NSmelody.ns.cloudflare.com2026-08-18 → 2026-08-27 · 2 obs

● 2026-08-18 18:33:56
● 2026-08-27 07:52:00

●MXsmtp.google.com2026-08-18 → 2026-08-27 · 2 obs

● 2026-08-18 18:33:56
● 2026-08-27 07:52:00

●A104.21.91.392026-08-22 → 2026-08-27 · 3 obs

○ 2026-08-18 18:33:56
● 2026-08-22 00:24:04
● 2026-08-27 07:52:00

●A172.67.209.1332026-08-22 → 2026-08-27 · 3 obs

○ 2026-08-18 18:33:56
● 2026-08-22 00:24:04
● 2026-08-27 07:52:00

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

● 2026-08-18 18:33:56
○ 2026-08-22 00:24:04
○ 2026-08-27 07:52:00

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

● 2026-08-18 18:33:56
○ 2026-08-22 00:24:04
○ 2026-08-27 07:52:00

●A2606:4700:3031::6815:5b272026-08-22 → 2026-08-27 · 3 obs

○ 2026-08-18 18:33:56
● 2026-08-22 00:24:04
● 2026-08-27 07:52:00

●A2606:4700:3036::ac43:d1852026-08-22 → 2026-08-27 · 3 obs

○ 2026-08-18 18:33:56
● 2026-08-22 00:24:04
● 2026-08-27 07:52:00

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

● 2026-08-18 18:33:56
○ 2026-08-22 00:24:04
○ 2026-08-27 07:52:00

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

● 2026-08-18 18:33:56
○ 2026-08-22 00:24:04
○ 2026-08-27 07:52:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, f.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net...	-
stackoptimiselab.com	doug.ns.cloudflare.com, melody.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.159

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: 390ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.91.39, 172.67.209.133`
AAAA	2	`2606:4700:3036::ac43:d185, 2606:4700:3031::6815:5b27`
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 directs to four IP numbers, which are 104.21.91.39, 172.67.209.133, 2606:4700:3031::6815:5b27 and 2606:4700:3036::ac43:d185.

4kosap.top, 13608x.com, mwepartnership.com and two other host names share IP numbers with stackoptimiselab.com.

Name Servers

stackoptimiselab.com uses two name servers for its delegation: doug.ns.cloudflare.com and melody.ns.cloudflare.com.

stackoptimiselab.com uses the same name servers as several other domains — among them infrapremium.com, dreambuckspizza.pages.dev, whambambigband.org and two more.

The name servers of stackoptimiselab.com overlap at least partially with those of other domains — among them depogembira.com, mongkonbet789.app, gamesveritas.com and two more.

These name servers commonly appear alongside the name servers adam.ns.cloudflare.com and chan.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

Hostname doug.ns.cloudflare.com directs to 108.162.193.159, 172.64.33.159 and 173.245.59.159 along with 3 other IP addresses.

Hostname melody.ns.cloudflare.com directs to 108.162.194.250, 162.159.38.250 and 172.64.34.250 along with 3 other IP addresses.

Mail Servers

Mail for stackoptimiselab.com is handled by a single mail server, smtp.google.com.

stackoptimiselab.com uses an identical mail server configuration to several other domains — among them knackbag.co.th, b2i.events, shavedbygrace.com and two more.

stackoptimiselab.com has at least partial mail server overlap with other domains such as meijiacademy.com, yabaianime.com, inceps.com and two more.

The mail servers aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com are commonly used alongside these mail servers.

smtp.google.com resolves to 9 IP addresses — 64.233.180.26, 64.233.180.27, 172.253.139.27 and 6 others.

stackoptimiselab.com - robtex.com