🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`stackcal.app`

DNSSEC	⚠️ Not signed
A	76.76.21.21^{🇺🇸 Amazon76.76.21.0/24 EC2 Prefix}
NS	`dylan.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cbb^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dylan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3bb^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dylan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23bb^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dylan.ns.cloudflare.com`
		A	108.162.195.187^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dylan.ns.cloudflare.com`
		A	162.159.44.187^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dylan.ns.cloudflare.com`
		A	172.64.35.187^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dylan.ns.cloudflare.com`
NS	`lia.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ab9^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lia.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0b9^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lia.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20b9^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lia.ns.cloudflare.com`
		A	108.162.192.185^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lia.ns.cloudflare.com`
		A	172.64.32.185^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lia.ns.cloudflare.com`
		A	173.245.58.185^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lia.ns.cloudflare.com`
MX	`aspmx1.migadu.com` ⭐
		A	2001:41d0:303:648a::1^{🇫🇷 OVH2001:41d0::/32 IPv6}
		A	2001:41d0:700:19b4::1^{🇫🇷 OVH2001:41d0::/32 IPv6}
		A	2001:41d0:700:1a57::1^{🇫🇷 OVH2001:41d0::/32 IPv6}
		A	51.38.57.138^{🇫🇷 OVH51.38.0.0/16}
			PTR	`mizu0.migadu.com`
		A	135.125.171.180^{🇫🇷 OVH135.125.128.0/17}
			PTR	`ns3160119.ip-135-125-171.eu`
		A	135.125.222.87^{🇫🇷 OVH135.125.128.0/17}
			PTR	`ns3160230.ip-135-125-222.eu`
MX	`aspmx2.migadu.com`⁽²⁰⁾
		A	2001:41d0:303:648a::1^{🇫🇷 OVH2001:41d0::/32 IPv6}
		A	2001:41d0:700:19b4::1^{🇫🇷 OVH2001:41d0::/32 IPv6}
		A	2001:41d0:700:1a57::1^{🇫🇷 OVH2001:41d0::/32 IPv6}
		A	51.38.57.138^{🇫🇷 OVH51.38.0.0/16}
			PTR	`mizu0.migadu.com`
		A	135.125.171.180^{🇫🇷 OVH135.125.128.0/17}
			PTR	`ns3160119.ip-135-125-171.eu`
		A	135.125.222.87^{🇫🇷 OVH135.125.128.0/17}
			PTR	`ns3160230.ip-135-125-222.eu`
TXT	`hosted-email-verify=tztzzwna`
TXT	`v=spf1 include:spf.migadu.com -all`
SOA	`dylan.ns.cloudflare.com`dns@cloudflare.com serial=2410901592

`app`

	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=101427

🔒 HSTS Preload (+subdomains)

Same first word

stackcal.ai

stackcal.app

Similar names

taskcalc.com

calstack.app

taskcalc.net

clastack.com

lackcast.cv

slackcat.chat

taskcalc.co.uk

sakalctc.com

calstack.com

Previous names

Next names

DNS History

5 records (5 active, 0 former)

●NSdylan.ns.cloudflare.com2026-09-05 → 2026-09-05 · 2 obs

● 2026-09-05 17:35:20
● 2026-09-05 21:59:42

●NSlia.ns.cloudflare.com2026-09-05 → 2026-09-05 · 2 obs

● 2026-09-05 17:35:20
● 2026-09-05 21:59:42

●MXaspmx1.migadu.com2026-09-05 → 2026-09-05 · 2 obs

● 2026-09-05 17:35:20
● 2026-09-05 21:59:42

●MXaspmx2.migadu.com2026-09-05 → 2026-09-05 · 2 obs

● 2026-09-05 17:35:20
● 2026-09-05 21:59:42

●A76.76.21.212026-09-05 → 2026-09-05 · 2 obs

● 2026-09-05 17:35:20
● 2026-09-05 21:59:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld5.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...	10 records
stackcal.app	lia.ns.cloudflare.com, dylan.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.185

NS records: lia.ns.cloudflare.com, dylan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stackcal.app (unsigned zone)

⏱️ Timing

Total: 723ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`76.76.21.21`
NS	2	`dylan.ns.cloudflare.com, lia.ns.cloudflare.com`
MX	2	`aspmx1.migadu.com (pri: 10), aspmx2.migadu.com (pri: 20)`
TXT	2	`hosted-email-verify=tztzzwna, v=spf1 include:spf.migadu.com -all`
SOA	1	`dylan.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld5.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...)

Analysis

IP Addresses

stackcal.app points to a single IP number: 76.76.21.21.

Additional host names — fortresschat.app, betterstacks.com, glamagent.ai and two others — share IP numbers with stackcal.app.

Name Servers

The NS records for stackcal.app delegate to dylan.ns.cloudflare.com and lia.ns.cloudflare.com.

stackcal.app shares its name server setup with other domains, including aikdy.vip, techflly.com, paypal-a80.workers.dev and two others.

stackcal.app shares at least some of its name servers with other domains, including mareas.pages.dev, deck-suite.net, cniqziom.workers.dev and two others.

These name servers are frequently seen alongside the name servers angela.ns.cloudflare.com.

Host names with 6 IP numbers:

dylan.ns.cloudflare.com maps to 108.162.195.187, 162.159.44.187, 172.64.35.187 and 3 additional IP addresses.

lia.ns.cloudflare.com maps to 108.162.192.185, 172.64.32.185, 173.245.58.185 and 3 additional IP addresses.

Mail Servers

stackcal.app has two mail servers: aspmx1.migadu.com and aspmx2.migadu.com.

stackcal.app shares the same mail server setup as other domains, including leaduri.md, 5in4.de, jmp25.net and two others.

stackcal.app has at least some mail servers in common with other domains, such as sundu.org, boringbin.com, zunvix.com and fineartlighting.co.uk.