🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`stackoptimisecores.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:497e^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:be09^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.73.126^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.190.9^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`elisa.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2636^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elisa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c236^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`elisa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2236^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`elisa.ns.cloudflare.com`
		A	108.162.194.54^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elisa.ns.cloudflare.com`
		A	162.159.38.54^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elisa.ns.cloudflare.com`
		A	172.64.34.54^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elisa.ns.cloudflare.com`
NS	`sam.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b8d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sam.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c18d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sam.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:218d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sam.ns.cloudflare.com`
		A	108.162.193.141^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.33.141^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	173.245.59.141^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`smtp.google.com` ⭐
		A	2607:f8b0:4004:c1b::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`wv-in-f26.1e100.net`
		A	2607:f8b0:4004:c1b::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`wv-in-f27.1e100.net`
		A	2607:f8b0:4004:c1d::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`ww-in-f26.1e100.net`
		A	2607:f8b0:4004:c1d::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`ww-in-f27.1e100.net`
		A	172.253.62.27^{🇺🇸 Google172.253.62.0/24}
			PTR	`bc-in-f27.1e100.net`
		A	172.253.115.26^{🇺🇸 Google172.253.115.0/24}
		A	172.253.115.27^{🇺🇸 Google172.253.115.0/24}
		A	172.253.122.27^{🇺🇸 Google172.253.122.0/24}
		A	192.178.218.26^{🇺🇸 Google192.178.218.0/24}
TXT	`google-site-verification=rCFNJz3zmp-U9cwZA7We4skeEAWGknXgsRDAFB9Npmo`
TXT	`v=spf1 include:_spf.google.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.73.126, 172.67.190.9
		IPv6 hints	2606:4700:3030::6815:497e, 2606:4700:3035::ac43:be09
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=126, name=cloudflare-ech.com
SOA	`elisa.ns.cloudflare.com`dns@cloudflare.com serial=2416121040

`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=1790905139

Same first word

stackoptimisecores.com

Previous names

Next names

DNS History

11 records (7 active, 4 former)

●NSelisa.ns.cloudflare.com2026-09-28 → 2026-10-02 · 2 obs

● 2026-09-28 23:06:20
● 2026-10-02 01:55:10

●NSsam.ns.cloudflare.com2026-09-28 → 2026-10-02 · 2 obs

● 2026-09-28 23:06:20
● 2026-10-02 01:55:10

●MXsmtp.google.com2026-09-28 → 2026-10-02 · 2 obs

● 2026-09-28 23:06:20
● 2026-10-02 01:55:10

●A104.21.73.1262026-09-29 → 2026-10-02 · 3 obs

○ 2026-09-28 23:06:20
● 2026-09-29 11:54:44
● 2026-10-02 01:55:10

●A172.67.190.92026-09-29 → 2026-10-02 · 3 obs

○ 2026-09-28 23:06:20
● 2026-09-29 11:54:44
● 2026-10-02 01:55:10

○A188.114.96.02026-09-28 → 2026-09-28 · 3 obs

● 2026-09-28 23:06:20
○ 2026-09-29 11:54:44
○ 2026-10-02 01:55:10

○A188.114.97.02026-09-28 → 2026-09-28 · 3 obs

● 2026-09-28 23:06:20
○ 2026-09-29 11:54:44
○ 2026-10-02 01:55:10

●A2606:4700:3030::6815:497e2026-09-29 → 2026-10-02 · 3 obs

○ 2026-09-28 23:06:20
● 2026-09-29 11:54:44
● 2026-10-02 01:55:10

●A2606:4700:3035::ac43:be092026-09-29 → 2026-10-02 · 3 obs

○ 2026-09-28 23:06:20
● 2026-09-29 11:54:44
● 2026-10-02 01:55:10

○A2a06:98c1:3120::2026-09-28 → 2026-09-28 · 3 obs

● 2026-09-28 23:06:20
○ 2026-09-29 11:54:44
○ 2026-10-02 01:55:10

○A2a06:98c1:3121::2026-09-28 → 2026-09-28 · 3 obs

● 2026-09-28 23:06:20
○ 2026-09-29 11:54:44
○ 2026-10-02 01:55:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, i.gtld-servers.net, c.gtld-servers.net, j.gtld-servers.net...	-
stackoptimisecores.com	sam.ns.cloudflare.com, elisa.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.141

NS records: sam.ns.cloudflare.com, elisa.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stackoptimisecores.com (unsigned zone)

⏱️ Timing

Total: 254ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.190.9, 104.21.73.126`
AAAA	2	`2606:4700:3035::ac43:be09, 2606:4700:3030::6815:497e`
NS	2	`elisa.ns.cloudflare.com, sam.ns.cloudflare.com`
MX	1	`smtp.google.com (pri: 1)`
TXT	2	`google-site-verification=rCFNJz3zmp-U9cw, v=spf1 include:_spf.google.com ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`elisa.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

stackoptimisecores.com points to the four IP addresses 104.21.73.126, 172.67.190.9, 2606:4700:3030::6815:497e and 2606:4700:3035::ac43:be09.

Among the host names that share IP numbers with stackoptimisecores.com are bosssports108.com, regaderasymezcladoras.com, hanasyokunin.co.jp and two others.

Name Servers

DNS delegation for stackoptimisecores.com points to two name servers: elisa.ns.cloudflare.com and sam.ns.cloudflare.com.

stackoptimisecores.com has the same name server delegation as a number of other domains, such as pinnaclehubco.com, cedarhill.digital, purelakeco.com and two more.

At least some of stackoptimisecores.com's name servers are shared with other domains, for example cominovepostco-oklsoft.pages.dev, callaea.pages.dev, harmonisblog.pages.dev and two more.

These name servers tend to be used in conjunction with the name servers brodie.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

elisa.ns.cloudflare.com has IP addresses 108.162.194.54, 162.159.38.54 and 172.64.34.54, plus 3 other.

sam.ns.cloudflare.com has IP addresses 108.162.193.141, 172.64.33.141 and 173.245.59.141, plus 3 other.

Mail Servers

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

stackoptimisecores.com has the same mail server arrangement as a number of other domains, for example siegesth.com, backroadglobal.com, mclean5solutions.com and two more.

stackoptimisecores.com shares at least some of its mail servers with other domains — for example glowcleaningsvcs.com, rdashtech.com, bea-ca.com and two more.

It is common to see these mail servers combined with the mail servers alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and alt3.aspmx.l.google.com.

smtp.google.com directs to 9 IP numbers, including 172.253.62.27, 172.253.115.26 and 172.253.115.27, along with 6 other.

stackoptimisecores.com - robtex.com