ustt.work - robtex.com
ustt.work
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::ac43:bc3c🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3032::6815:30e0🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.48.224Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.188.60🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | jihoon.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::a29f:2ce9🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jihoon.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c3e9🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | jihoon.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:23e9🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | jihoon.ns.cloudflare.com | ||||||
| A | 108.162.195.233🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jihoon.ns.cloudflare.com | ||||||
| A | 162.159.44.233Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jihoon.ns.cloudflare.com | ||||||
| A | 172.64.35.233🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jihoon.ns.cloudflare.com | ||||||
| NS | rosemary.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:264d🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rosemary.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c24d🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | rosemary.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:224d🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | rosemary.ns.cloudflare.com | ||||||
| A | 108.162.194.77🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rosemary.ns.cloudflare.com | ||||||
| A | 162.159.38.77Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rosemary.ns.cloudflare.com | ||||||
| A | 172.64.34.77🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rosemary.ns.cloudflare.com | ||||||
| TXT | google-site-verification=GcS6z5H4uz4RpEElMNSpT7319iZQhatNk5nCvu9D630 | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 | 104.21.48.224, 172.67.188.60 | ||||||
| IPv6 | 2606:4700:3030::ac43:bc3c, 2606:4700:3032::6815:30e0 | ||||||
| SOA | jihoon.ns.cloudflare.comdns@cloudflare.com serial=2397519376 | ||||||
work
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.nic.work ⭐ | ||||||
| NS | b.nic.work | ||||||
| NS | c.nic.work | ||||||
| NS | x.nic.work | ||||||
| NS | y.nic.work | ||||||
| NS | z.nic.work | ||||||
| SOA | a.nic.workadmin@tldns.godaddy serial=1774372396 | ||||||
Same first word
Similar names
DNS History
6 records (6 active, 0 former)
●NSjihoon.ns.cloudflare.com2026-03-19 → 2026-03-24 · 2 obs
● 2026-03-24 17:44:56
●NSrosemary.ns.cloudflare.com2026-03-19 → 2026-03-24 · 2 obs
● 2026-03-24 17:44:56
●A104.21.48.2242026-03-19 → 2026-03-24 · 2 obs
● 2026-03-24 17:44:56
●A172.67.188.602026-03-19 → 2026-03-24 · 2 obs
● 2026-03-24 17:44:56
●A2606:4700:3030::ac43:bc3c2026-03-19 → 2026-03-24 · 2 obs
● 2026-03-24 17:44:56
●A2606:4700:3032::6815:30e02026-03-19 → 2026-03-24 · 2 obs
● 2026-03-24 17:44:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| work | a.nic.work, b.nic.work, c.nic.work, x.nic.work... | 12 records |
| ustt.work | jihoon.ns.cloudflare.com, rosemary.ns.cloudflare.com | - |
✅ Authoritative Response
Server:162.159.44.233
NS records: jihoon.ns.cloudflare.com, rosemary.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ustt.work (unsigned zone)
⏱️ Timing
Total: 406ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.188.60, 104.21.48.224 |
| AAAA | 2 | 2606:4700:3030::ac43:bc3c, 2606:4700:3032::6815:30e0 |
| NS | 2 | jihoon.ns.cloudflare.com, rosemary.ns.cloudflare.com |
| TXT | 1 | google-site-verification=GcS6z5H4uz4RpEE |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | jihoon.ns.cloudflare.com dns.cloudflare. |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (a.nic.work, b.nic.work, c.nic.work...)
Analysis
IP Addresses
ustt.work points to four IP numbers: 2606:4700:3030::ac43:bc3c, 2606:4700:3032::6815:30e0, 104.21.48.224 and 172.67.188.60.
For instance, other host names pokojovkyodlucie.cz, rustichomelife.com, punch.dk, claims-vision.xyz and www.digestivecentre.com.sg.cdn.cloudflare.net share IP numbers with ustt.work.
Name Servers
ustt.work is delegated to two name servers: jihoon.ns.cloudflare.com and rosemary.ns.cloudflare.com.
ustt.work uses the same name server setup as other domains such as adlerglass.co.nz, stroteks-perm.ru, gomblingobonus.com, naruto-max.ru and kapitiindependentnews.net.nz.
ustt.work shares name servers with other domains at least partially, for example flowcom.io, (0x6675636b)bookster.com, jinxiangsi.com, newyorkcityliposuction.com and evolusia.com.
Host names with six IP numbers: host name jihoon.ns.cloudflare.com points to: 2606:4700:58::a29f:2ce9, 2803:f800:50::6ca2:c3e9, 2a06:98c1:50::ac40:23e9, 108.162.195.233, 162.159.44.233 and 172.64.35.233; host name rosemary.ns.cloudflare.com points to: 2606:4700:50::a29f:264d, 2803:f800:50::6ca2:c24d, 2a06:98c1:50::ac40:224d, 108.162.194.77, 162.159.38.77 and 172.64.34.77.