holtzman.app - robtex.com
holtzman.app
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.comcloud-dns-hostmaster@google.com serial=101427 | ||||||
Subdomains
staging.holtzman.app |
Same first word
Similar names
DNS History
7 records (7 active, 0 former)
●NScleo.ns.cloudflare.com2026-07-09 → 2026-08-10 · 2 obs
● 2026-08-10 01:31:06
●NSsue.ns.cloudflare.com2026-07-09 → 2026-08-10 · 2 obs
● 2026-08-10 01:31:06
●MXsmtp.google.com2026-07-09 → 2026-08-10 · 2 obs
● 2026-08-10 01:31:06
●A104.21.53.2142026-07-09 → 2026-08-10 · 2 obs
● 2026-08-10 01:31:06
●A172.67.218.2182026-07-09 → 2026-08-10 · 2 obs
● 2026-08-10 01:31:06
●A2606:4700:3034::ac43:dada2026-07-09 → 2026-08-10 · 2 obs
● 2026-08-10 01:31:06
●A2606:4700:3036::6815:35d62026-07-09 → 2026-08-10 · 2 obs
● 2026-08-10 01:31:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| app | ns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com... | - |
| holtzman.app | cleo.ns.cloudflare.com, sue.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.192.145
NS records: cleo.ns.cloudflare.com, sue.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for holtzman.app (unsigned zone)
⏱️ Timing
Total: 641ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.53.214, 172.67.218.218 |
| AAAA | 2 | 2606:4700:3034::ac43:dada, 2606:4700:3036::6815:35d6 |
| NS | 2 | cleo.ns.cloudflare.com, sue.ns.cloudflare.com |
| MX | 1 | smtp.google.com (pri: 1) |
| TXT | 3 | google-site-verification=8jLFCyOCniJj377, google-site-verification=V5GFByaIQTVkv1D... |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | cleo.ns.cloudflare.com dns.cloudflare.co |
Analysis
Hierarchy
staging.holtzman.app is a subdomain of holtzman.app.
IP Addresses
holtzman.app points to the four IP addresses 104.21.53.214, 172.67.218.218, 2606:4700:3034::ac43:dada and 2606:4700:3036::6815:35d6.
Additional host names — cartasysolicitudes.com, taandta.com.cn, dinerodaily.com and two others — share IP numbers with holtzman.app.
Name Servers
holtzman.app is delegated to two name servers: cleo.ns.cloudflare.com and sue.ns.cloudflare.com.
holtzman.app shares its name server setup with other domains, including cosmobetcasinoua.com, itstime.com, alvillaromantica.com and two others.
The name servers of holtzman.app overlap at least partially with those of other domains — among them framepayments.com, tank-afv.com, freedigibyte.xyz and two more.
These name servers commonly co-occur with the name servers nile.ns.cloudflare.com, jake.ns.cloudflare.com, wren.ns.cloudflare.com and veda.ns.cloudflare.com.
Host names with 6 IP numbers:
cleo.ns.cloudflare.com resolves to 108.162.193.89, 172.64.33.89, 173.245.59.89 and 3 other IP addresses.
sue.ns.cloudflare.com resolves to 108.162.192.145, 172.64.32.145, 173.245.58.145 and 3 other IP addresses.
Mail Servers
holtzman.app has one mail server: smtp.google.com.
holtzman.app shares the same mail server setup as other domains, including everestassessoria.com, shieldautonomy.online, fikirce.com.tr and two others.
holtzman.app shares mail servers — at least in part — with other domains, including veetube.com, heusom.com, thedesignuniverse.com and two others.
The mail servers alt1.aspmx.l.google.com and alt2.aspmx.l.google.com are commonly paired with these mail servers.
smtp.google.com points to 9 IP numbers: 142.250.31.27, 172.253.115.26, 172.253.115.27 and 6 other.