🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`calcstack.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:d53e^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3032::6815:1092^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.16.146^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.213.62^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`erin.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a71^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c071^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`erin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2071^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`erin.ns.cloudflare.com`
		A	108.162.192.113^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
		A	172.64.32.113^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
		A	173.245.58.113^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
NS	`mike.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c3f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mike.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c33f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`mike.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:233f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`mike.ns.cloudflare.com`
		A	108.162.195.63^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mike.ns.cloudflare.com`
		A	162.159.44.63^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mike.ns.cloudflare.com`
		A	172.64.35.63^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mike.ns.cloudflare.com`
MX	`eforward1.registrar-servers.com` ⭐
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
MX	`eforward2.registrar-servers.com` ⭐
		A	162.255.118.52^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward2.registrar-servers.com`
MX	`eforward3.registrar-servers.com` ⭐
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
MX	`eforward4.registrar-servers.com`⁽¹⁵⁾
		A	162.255.118.52^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward2.registrar-servers.com`
MX	`eforward5.registrar-servers.com`⁽²⁰⁾
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
TXT	`google-site-verification=TPIET_QM5O4VeKCpvX_Ips67GSpgRi2ganU3T-1aJRM`
TXT	`v=spf1 include:spf.efwd.registrar-servers.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.16.146, 172.67.213.62
		IPv6 hints	2606:4700:3030::ac43:d53e, 2606:4700:3032::6815:1092
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=99, name=cloudflare-ech.com
SOA	`erin.ns.cloudflare.com`dns@cloudflare.com serial=2414188439

`dev`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=1

🔒 HSTS Preload (+subdomains)

Same first word

calcstack.ai

calcstack.co

calcstack.pages.dev

calcstack.website

calcstack.dev

calcstack.io

Similar names

stackcalc.pages.dev

stackcalc.app

stackcalc.com.br

stackcalc.com

stackcalc.io

Previous names

calcari.dev

calcbase.dev

calcbird.dev

calcex.dev

calcforge.dev

calcgrid.dev

calchas.dev

calchub.dev

calcifer.dev

calcina.dev

calcis.dev

calciumdoi.dev

calciumsulfat.dev

calckit.dev

calclab.dev

calclaro.dev

calco.dev

calcode.dev

calcodes.dev

calcote.dev

Next names

DNS History

15 records (11 active, 4 former)

●NSerin.ns.cloudflare.com2026-08-30 → 2026-09-17 · 2 obs

● 2026-08-30 05:14:30
● 2026-09-17 03:06:34

●NSmike.ns.cloudflare.com2026-08-30 → 2026-09-17 · 2 obs

● 2026-08-30 05:14:30
● 2026-09-17 03:06:34

●MXeforward1.registrar-servers.com2026-08-30 → 2026-09-17 · 2 obs

● 2026-08-30 05:14:30
● 2026-09-17 03:06:34

●MXeforward2.registrar-servers.com2026-08-30 → 2026-09-17 · 2 obs

● 2026-08-30 05:14:30
● 2026-09-17 03:06:34

●MXeforward3.registrar-servers.com2026-08-30 → 2026-09-17 · 2 obs

● 2026-08-30 05:14:30
● 2026-09-17 03:06:34

●MXeforward4.registrar-servers.com2026-08-30 → 2026-09-17 · 2 obs

● 2026-08-30 05:14:30
● 2026-09-17 03:06:34

●MXeforward5.registrar-servers.com2026-08-30 → 2026-09-17 · 2 obs

● 2026-08-30 05:14:30
● 2026-09-17 03:06:34

●A104.21.16.1462026-09-15 → 2026-09-17 · 3 obs

○ 2026-08-30 05:14:30
● 2026-09-15 18:54:36
● 2026-09-17 03:06:34

●A172.67.213.622026-09-15 → 2026-09-17 · 3 obs

○ 2026-08-30 05:14:30
● 2026-09-15 18:54:36
● 2026-09-17 03:06:34

○A188.114.96.02026-08-30 → 2026-08-30 · 3 obs

● 2026-08-30 05:14:30
○ 2026-09-15 18:54:36
○ 2026-09-17 03:06:34

○A188.114.97.02026-08-30 → 2026-08-30 · 3 obs

● 2026-08-30 05:14:30
○ 2026-09-15 18:54:36
○ 2026-09-17 03:06:34

●A2606:4700:3030::ac43:d53e2026-09-15 → 2026-09-17 · 3 obs

○ 2026-08-30 05:14:30
● 2026-09-15 18:54:36
● 2026-09-17 03:06:34

●A2606:4700:3032::6815:10922026-09-15 → 2026-09-17 · 3 obs

○ 2026-08-30 05:14:30
● 2026-09-15 18:54:36
● 2026-09-17 03:06:34

○A2a06:98c1:3120::2026-08-30 → 2026-08-30 · 3 obs

● 2026-08-30 05:14:30
○ 2026-09-15 18:54:36
○ 2026-09-17 03:06:34

○A2a06:98c1:3121::2026-08-30 → 2026-08-30 · 3 obs

● 2026-08-30 05:14:30
○ 2026-09-15 18:54:36
○ 2026-09-17 03:06:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	-
calcstack.dev	mike.ns.cloudflare.com, erin.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.35.63

NS records: mike.ns.cloudflare.com, erin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for calcstack.dev (unsigned zone)

⏱️ Timing

Total: 1893ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.16.146, 172.67.213.62`
AAAA	2	`2606:4700:3030::ac43:d53e, 2606:4700:3032::6815:1092`
NS	2	`erin.ns.cloudflare.com, mike.ns.cloudflare.com`
MX	5	`eforward1.registrar-servers.com (pri: 10, eforward2.registrar-servers.com (pri: 10...`
TXT	2	`google-site-verification=TPIET_QM5O4VeKC, v=spf1 include:spf.efwd.registrar-server`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`erin.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

calcstack.dev directs to four IP numbers, which are 104.21.16.146, 172.67.213.62, 2606:4700:3030::ac43:d53e and 2606:4700:3032::6815:1092.

Among the host names that share IP numbers with calcstack.dev are karambacasino.kr, 88vb.pro, stepwith.me and two others.

Name Servers

DNS delegation for calcstack.dev points to two name servers: erin.ns.cloudflare.com and mike.ns.cloudflare.com.

calcstack.dev has the same name server delegation as a number of other domains, such as c6-5xl.pages.dev, sahinaf405-20493-0-law.pages.dev, saqe.ca and two more.

There is at least partial name server overlap between calcstack.dev and other domains — pushnotifier.app, lowawerkschoenen.com, casinoonline-56w.pages.dev and two more among them.

The name servers treasure.ns.cloudflare.com, ivan.ns.cloudflare.com and houston.ns.cloudflare.com are often found in combination with these name servers.

Host names resolving to 6 IP numbers:

erin.ns.cloudflare.com has IP addresses 108.162.192.113, 172.64.32.113 and 173.245.58.113, plus 3 other.

mike.ns.cloudflare.com has IP addresses 108.162.195.63, 162.159.44.63 and 172.64.35.63, plus 3 other.

Mail Servers

Five mail servers handle calcstack.dev: eforward1.registrar-servers.com, eforward2.registrar-servers.com, eforward3.registrar-servers.com and two others.

calcstack.dev shares at least some of its mail servers with other domains — for example orbitmedtech.com, boneu.co.uk, bukharideals.online and two more.

These mail servers are routinely seen in conjunction with the mail servers eforward4.registrar-servers.com and eforward5.registrar-servers.com.

Hosts that resolve to one IP address:

eforward1.registrar-servers.com directs to 162.255.118.51.

eforward2.registrar-servers.com directs to 162.255.118.52.

eforward3.registrar-servers.com directs to 162.255.118.51.

eforward4.registrar-servers.com directs to 162.255.118.52.

eforward5.registrar-servers.com directs to 162.255.118.51.

eforward1.registrar-servers.com, eforward3.registrar-servers.com and eforward5.registrar-servers.com all direct to 162.255.118.51.

Host names pointing to 162.255.118.52 IP addresses: eforward2.registrar-servers.com and eforward4.registrar-servers.com.