seqcalc.io - robtex.com
seqcalc.io
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::ac43:ca4f🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3033::6815:4cf1🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.76.241Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.202.79🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | ignat.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::a29f:2c13🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ignat.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c313🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | ignat.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2313🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | ignat.ns.cloudflare.com | ||||||
| A | 108.162.195.19🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ignat.ns.cloudflare.com | ||||||
| A | 162.159.44.19Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ignat.ns.cloudflare.com | ||||||
| A | 172.64.35.19🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ignat.ns.cloudflare.com | ||||||
| NS | ziggy.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:26ed🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ziggy.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c2ed🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | ziggy.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:22ed🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | ziggy.ns.cloudflare.com | ||||||
| A | 108.162.194.237🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ziggy.ns.cloudflare.com | ||||||
| A | 162.159.38.237Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ziggy.ns.cloudflare.com | ||||||
| A | 172.64.34.237🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ziggy.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.76.241, 172.67.202.79 | ||||||
| IPv6 hints | 2606:4700:3030::ac43:ca4f, 2606:4700:3033::6815:4cf1 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=104, name=cloudflare-ech.com | ||||||
| SOA | ignat.ns.cloudflare.comdns@cloudflare.com serial=2410496694 | ||||||
io
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.nic.io ⭐ | ||||||
| NS | a2.nic.io | ||||||
| NS | b0.nic.io | ||||||
| NS | c0.nic.io | ||||||
| SOA | a0.nic.iohostmaster@donuts.email serial=1785720543 | ||||||
Same first word
seqcalc.io |
DNS History
6 records (6 active, 0 former)
●NSignat.ns.cloudflare.com2026-07-17 → 2026-08-03 · 2 obs
● 2026-08-03 01:38:14
●NSziggy.ns.cloudflare.com2026-07-17 → 2026-08-03 · 2 obs
● 2026-08-03 01:38:14
●A104.21.76.2412026-07-17 → 2026-08-03 · 2 obs
● 2026-08-03 01:38:14
●A172.67.202.792026-07-17 → 2026-08-03 · 2 obs
● 2026-08-03 01:38:14
●A2606:4700:3030::ac43:ca4f2026-07-17 → 2026-08-03 · 2 obs
● 2026-08-03 01:38:14
●A2606:4700:3033::6815:4cf12026-07-17 → 2026-08-03 · 2 obs
● 2026-08-03 01:38:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| io | a0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io | - |
| seqcalc.io | ziggy.ns.cloudflare.com, ignat.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.194.237
NS records: ziggy.ns.cloudflare.com, ignat.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for seqcalc.io (unsigned zone)
⏱️ Timing
Total: 448ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.202.79, 104.21.76.241 |
| AAAA | 2 | 2606:4700:3030::ac43:ca4f, 2606:4700:3033::6815:4cf1 |
| NS | 2 | ignat.ns.cloudflare.com, ziggy.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | ignat.ns.cloudflare.com dns.cloudflare.c |
Analysis
IP Addresses
seqcalc.io directs to four IP numbers, which are 104.21.76.241, 172.67.202.79, 2606:4700:3030::ac43:ca4f and 2606:4700:3033::6815:4cf1.
teachersportalph.com, www.(0x706f726e)star(0x6e756465).com, 50balles.com and two other host names share IP numbers with seqcalc.io.
Name Servers
The NS records for seqcalc.io delegate to ignat.ns.cloudflare.com and ziggy.ns.cloudflare.com.
seqcalc.io uses the same name servers as several other domains — among them al7al.info, godisable.io, wanitapbb.my and two more.
The name servers of seqcalc.io overlap at least partially with those of other domains — among them thefaceholic.com, cumberlandvoices.com, btcimpulso3i.digital and two more.
These name servers commonly appear in combination with the name servers lamar.ns.cloudflare.com.
Hostnames that resolve to 6 IP addresses:
ignat.ns.cloudflare.com maps to 108.162.195.19, 162.159.44.19, 172.64.35.19 and 3 additional IP addresses.
ziggy.ns.cloudflare.com maps to 108.162.194.237, 162.159.38.237, 172.64.34.237 and 3 additional IP addresses.