cu.studio - dns.ninja
cu.studio
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.digitalocean.com ⭐ | ||||||
| A | 2606:4700:52::ac40:34d2🇺🇸 Cloudflare2606:4700:52::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns1.digitalocean.com | ||||||
| A | 172.64.52.210🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns1.digitalocean.com | ||||||
| NS | ns2.digitalocean.com | ||||||
| A | 2606:4700:5a::ac40:3515🇺🇸 Cloudflare2606:4700:5a::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns2.digitalocean.com | ||||||
| A | 172.64.53.21🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns2.digitalocean.com | ||||||
| NS | ns3.digitalocean.com | ||||||
| A | 2606:4700:52::ac40:31d1🇺🇸 Cloudflare2606:4700:52::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns3.digitalocean.com | ||||||
| A | 172.64.49.209🇺🇸 Cloudflare172.64.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns3.digitalocean.com | ||||||
| MX | my.cu.studio ⭐ | ||||||
| A | 192.241.192.16🇺🇸 DIGITALOCEAN192.241.192.0/19 DigitalOcean | ||||||
| PTR | my.cu.studio | ||||||
| TXT | v=spf1 include:mailgun.org a:my.cu.city ~all | ||||||
| TXT | v=spf1 a:my.cu.studio ~all | ||||||
| SOA | ns1.digitalocean.comhostmaster@cu.studio serial=0 | ||||||
studio
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | v0n0.nic.studio ⭐ | ||||||
| NS | v0n1.nic.studio | ||||||
| NS | v0n2.nic.studio | ||||||
| NS | v0n3.nic.studio | ||||||
| NS | v2n0.nic.studio | ||||||
| NS | v2n1.nic.studio | ||||||
| SOA | v0n0.nic.studiohostmaster@donuts.email serial=1782711276 | ||||||
Subdomains
my.cu.studio |
Same first word
Similar names
DNS History
7 records (4 active, 3 former)
●NSns1.digitalocean.com2019-12-13 → 2026-06-29 · 2 obs
● 2026-06-29 06:25:22
●NSns2.digitalocean.com2019-12-13 → 2026-06-29 · 2 obs
● 2026-06-29 06:25:22
●NSns3.digitalocean.com2019-12-13 → 2026-06-29 · 2 obs
● 2026-06-29 06:25:22
○MXmxa.mailgun.org2019-12-13 → 2019-12-13 · 3 obs
○ 2026-02-18 15:25:18
○ 2026-06-29 06:25:22
○MXmxb.mailgun.org2019-12-13 → 2019-12-13 · 3 obs
○ 2026-02-18 15:25:18
○ 2026-06-29 06:25:22
●MXmy.cu.studio2026-02-18 → 2026-06-29 · 3 obs
● 2026-02-18 15:25:18
● 2026-06-29 06:25:22
○A192.241.198.1132019-12-13 → 2019-12-13 · 3 obs
○ 2026-02-18 15:25:18
○ 2026-06-29 06:25:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| studio | v2n0.nic.studio, v0n2.nic.studio, v0n0.nic.studio, v0n3.nic.studio... | - |
| cu.studio | ns3.digitalocean.com, ns1.digitalocean.com, ns2.digitalocean.com | - |
✅ Authoritative Response
Server:172.64.53.21
NS records: ns3.digitalocean.com, ns1.digitalocean.com, ns2.digitalocean.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cu.studio (unsigned zone)
⏱️ Timing
Total: 404ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 3 | ns2.digitalocean.com, ns3.digitalocean.com... |
| MX | 1 | my.cu.studio (pri: 10) |
| TXT | 2 | v=spf1 a:my.cu.studio ~all, v=spf1 include:mailgun.org a:my.cu.city |
| SOA | 1 | ns1.digitalocean.com hostmaster.cu.studi |
Analysis
Hierarchy
cu.studio is a parent domain of my.cu.studio.
Name Servers
cu.studio carries NS records delegating to ns1.digitalocean.com, ns2.digitalocean.com and ns3.digitalocean.com.
cu.studio shares at least some of its name servers with other domains, including wmedly.com, 1.0.0.e.8.8.5.0.0.0.0.0.0.0.0.0.0.1.0.0.0.0.8.0.0.8.8.a.4.0.6.2.ip6.arpa, jonmathews.net and two others.
ns1.digitalocean.com, ns2.digitalocean.com and ns3.digitalocean.com are three hostnames that each resolve to a pair of IP addresses: ns1.digitalocean.com to 172.64.52.210 and 2606:4700:52::ac40:34d2, ns2.digitalocean.com to 172.64.53.21 and 2606:4700:5a::ac40:3515, and ns3.digitalocean.com to 172.64.49.209 and 2606:4700:52::ac40:31d1.
Mail Servers
cu.studio uses one mail server — my.cu.studio.
my.cu.studio carries a single IP number, which is 192.241.192.16.