seqcalc.dev - robtex.com
seqcalc.dev
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::6815:45de🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3032::ac43:d585🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.69.222Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.213.133🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | cruz.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::adf5:3a58🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cruz.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c058🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | cruz.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2058🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | cruz.ns.cloudflare.com | ||||||
| A | 108.162.192.88🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cruz.ns.cloudflare.com | ||||||
| A | 172.64.32.88🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cruz.ns.cloudflare.com | ||||||
| A | 173.245.58.88🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cruz.ns.cloudflare.com | ||||||
| NS | fonzie.ns.cloudflare.com | ||||||
| A | 2606:4700:58::a29f:2c46🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | fonzie.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c346🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | fonzie.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2346🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | fonzie.ns.cloudflare.com | ||||||
| A | 108.162.195.70🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | fonzie.ns.cloudflare.com | ||||||
| A | 162.159.44.70Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | fonzie.ns.cloudflare.com | ||||||
| A | 172.64.35.70🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | fonzie.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.69.222, 172.67.213.133 | ||||||
| IPv6 hints | 2606:4700:3030::6815:45de, 2606:4700:3032::ac43:d585 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=207, name=cloudflare-ech.com | ||||||
| SOA | cruz.ns.cloudflare.comdns@cloudflare.com serial=2411058528 | ||||||
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.comcloud-dns-hostmaster@google.com serial=1 | ||||||
Same first word
Previous names
Next names
DNS History
6 records (6 active, 0 former)
●NScruz.ns.cloudflare.com2026-08-25 → 2026-08-28 · 2 obs
● 2026-08-28 01:28:38
●NSfonzie.ns.cloudflare.com2026-08-25 → 2026-08-28 · 2 obs
● 2026-08-28 01:28:38
●A104.21.69.2222026-08-25 → 2026-08-28 · 2 obs
● 2026-08-28 01:28:38
●A172.67.213.1332026-08-25 → 2026-08-28 · 2 obs
● 2026-08-28 01:28:38
●A2606:4700:3030::6815:45de2026-08-25 → 2026-08-28 · 2 obs
● 2026-08-28 01:28:38
●A2606:4700:3032::ac43:d5852026-08-25 → 2026-08-28 · 2 obs
● 2026-08-28 01:28:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| dev | ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com... | - |
| seqcalc.dev | fonzie.ns.cloudflare.com, cruz.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.35.70
NS records: fonzie.ns.cloudflare.com, cruz.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for seqcalc.dev (unsigned zone)
⏱️ Timing
Total: 531ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.69.222, 172.67.213.133 |
| AAAA | 2 | 2606:4700:3032::ac43:d585, 2606:4700:3030::6815:45de |
| NS | 2 | cruz.ns.cloudflare.com, fonzie.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | cruz.ns.cloudflare.com dns.cloudflare.co |
Analysis
IP Addresses
seqcalc.dev has four IP addresses: 104.21.69.222, 172.67.213.133, 2606:4700:3030::6815:45de and 2606:4700:3032::ac43:d585.
Among the host names that share IP numbers with seqcalc.dev are mx1.start-and-go.fr, bvsalternatifhoki.skin, www.fcbarcelonanoticias.com and two others.
Name Servers
seqcalc.dev is delegated to two name servers: cruz.ns.cloudflare.com and fonzie.ns.cloudflare.com.
seqcalc.dev has the same name server delegation as a number of other domains, such as newme-baby.ru, unispourlukraine.org, andrerauch.com and two more.
seqcalc.dev partially shares its NS delegation with several other domains, including 17e6cb82529ffccc.cc, panen138city6.online, rr1.pages.dev and two others.
These name servers often co-occur with the name servers pete.ns.cloudflare.com.
Host names resolving to 6 IP numbers:
cruz.ns.cloudflare.com resolves to 108.162.192.88, 172.64.32.88, 173.245.58.88 and 3 other IP addresses.
fonzie.ns.cloudflare.com resolves to 108.162.195.70, 162.159.44.70, 172.64.35.70 and 3 other IP addresses.