checkstack.io - robtex.com
checkstack.io
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3032::ac43:bd64🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3036::6815:414d🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.65.77Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.189.100🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | gannon.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::a29f:2c3b🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gannon.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c33b🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | gannon.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:233b🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | gannon.ns.cloudflare.com | ||||||
| A | 108.162.195.59🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gannon.ns.cloudflare.com | ||||||
| A | 162.159.44.59Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gannon.ns.cloudflare.com | ||||||
| A | 172.64.35.59🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gannon.ns.cloudflare.com | ||||||
| NS | harleigh.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:263a🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | harleigh.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c23a🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | harleigh.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:223a🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | harleigh.ns.cloudflare.com | ||||||
| A | 108.162.194.58🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | harleigh.ns.cloudflare.com | ||||||
| A | 162.159.38.58Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | harleigh.ns.cloudflare.com | ||||||
| A | 172.64.34.58🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | harleigh.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.65.77, 172.67.189.100 | ||||||
| IPv6 hints | 2606:4700:3032::ac43:bd64, 2606:4700:3036::6815:414d | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=250, name=cloudflare-ech.com | ||||||
| SOA | gannon.ns.cloudflare.comdns@cloudflare.com serial=2410699584 | ||||||
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=1789613994 | ||||||
Same first word
Similar names
Previous names
Next names
DNS History
6 records (6 active, 0 former)
●NSgannon.ns.cloudflare.com2026-08-31 → 2026-09-17 · 2 obs
● 2026-09-17 03:19:38
●NSharleigh.ns.cloudflare.com2026-08-31 → 2026-09-17 · 2 obs
● 2026-09-17 03:19:38
●A104.21.65.772026-08-31 → 2026-09-17 · 2 obs
● 2026-09-17 03:19:38
●A172.67.189.1002026-08-31 → 2026-09-17 · 2 obs
● 2026-09-17 03:19:38
●A2606:4700:3032::ac43:bd642026-08-31 → 2026-09-17 · 2 obs
● 2026-09-17 03:19:38
●A2606:4700:3036::6815:414d2026-08-31 → 2026-09-17 · 2 obs
● 2026-09-17 03:19:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| io | a0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io | 8 records |
| checkstack.io | harleigh.ns.cloudflare.com, gannon.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.35.59
NS records: harleigh.ns.cloudflare.com, gannon.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for checkstack.io (unsigned zone)
⏱️ Timing
Total: 1414ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.65.77, 172.67.189.100 |
| AAAA | 2 | 2606:4700:3036::6815:414d, 2606:4700:3032::ac43:bd64 |
| NS | 2 | gannon.ns.cloudflare.com, harleigh.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | gannon.ns.cloudflare.com dns.cloudflare. |
📌 Glue Records Collected
Total: 8
In-bailiwick: 8 (a0.nic.io, a2.nic.io, b0.nic.io...)
Analysis
IP Addresses
checkstack.io points to the four IP addresses 104.21.65.77, 172.67.189.100, 2606:4700:3032::ac43:bd64 and 2606:4700:3036::6815:414d.
Two other host names, along with tsoe9t.cn, thrill-casino.kiwi and uu88cskh.com, also share IP numbers with checkstack.io.
Name Servers
Two name servers handle the delegation for checkstack.io: gannon.ns.cloudflare.com and harleigh.ns.cloudflare.com.
checkstack.io shares its NS records with other domains, for example learnclaude.pro, homepage-d4a.pages.dev, hiexpress-rto-explorer.pages.dev and two others.
The name servers of checkstack.io overlap at least partially with those of other domains — among them desamarmi-fe.pages.dev, sugaringoasis.com, tkjdsb.com and two more.
The name servers armando.ns.cloudflare.com, veronica.ns.cloudflare.com and ursula.ns.cloudflare.com are commonly seen alongside these name servers.
DNS names with 6 IP addresses:
gannon.ns.cloudflare.com resolves to 108.162.195.59, 162.159.44.59 and 172.64.35.59 among others, with 3 other IP addresses in total.
harleigh.ns.cloudflare.com resolves to 108.162.194.58, 162.159.38.58 and 172.64.34.58 among others, with 3 other IP addresses in total.