dvemfc.courses - robtex.com
dvemfc.courses
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3034::6815:3070🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::ac43:96b4🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.48.112Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.150.180🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | art.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3b66🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | art.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c166🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | art.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2166🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | art.ns.cloudflare.com | ||||||
| A | 108.162.193.102🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | art.ns.cloudflare.com | ||||||
| A | 172.64.33.102🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | art.ns.cloudflare.com | ||||||
| A | 173.245.59.102🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | art.ns.cloudflare.com | ||||||
| NS | cecelia.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:2687🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cecelia.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c287🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | cecelia.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2287🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | cecelia.ns.cloudflare.com | ||||||
| A | 108.162.194.135🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cecelia.ns.cloudflare.com | ||||||
| A | 162.159.38.135Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cecelia.ns.cloudflare.com | ||||||
| A | 172.64.34.135🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cecelia.ns.cloudflare.com | ||||||
| TXT | google-site-verification=JD36AvYNBLlMEjsSqfaeUHHrhC135Qy6_vbIuaqwR_s | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.48.112, 172.67.150.180 | ||||||
| IPv6 hints | 2606:4700:3034::6815:3070, 2606:4700:3037::ac43:96b4 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=3, name=cloudflare-ech.com | ||||||
| SOA | art.ns.cloudflare.comdns@cloudflare.com serial=2401943121 | ||||||
courses
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.nic.courses ⭐ | ||||||
| NS | b.nic.courses | ||||||
| NS | c.nic.courses | ||||||
| NS | x.nic.courses | ||||||
| NS | y.nic.courses | ||||||
| NS | z.nic.courses | ||||||
| SOA | a.nic.coursesadmin@tldns.godaddy serial=1777193611 | ||||||
Subdomains
www.dvemfc.courses |
Same first word
dvemfc.courses |
Similar names
DNS History
6 records (6 active, 0 former)
●NSart.ns.cloudflare.com2026-04-09 → 2026-04-26 · 2 obs
● 2026-04-26 09:19:26
●NScecelia.ns.cloudflare.com2026-04-09 → 2026-04-26 · 2 obs
● 2026-04-26 09:19:26
●A104.21.48.1122026-04-09 → 2026-04-26 · 2 obs
● 2026-04-26 09:19:26
●A172.67.150.1802026-04-09 → 2026-04-26 · 2 obs
● 2026-04-26 09:19:26
●A2606:4700:3034::6815:30702026-04-09 → 2026-04-26 · 2 obs
● 2026-04-26 09:19:26
●A2606:4700:3037::ac43:96b42026-04-09 → 2026-04-26 · 2 obs
● 2026-04-26 09:19:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| courses | x.nic.courses, a.nic.courses, b.nic.courses, c.nic.courses... | 12 records |
| dvemfc.courses | art.ns.cloudflare.com, cecelia.ns.cloudflare.com | - |
✅ Authoritative Response
Server:173.245.59.102
NS records: art.ns.cloudflare.com, cecelia.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dvemfc.courses (unsigned zone)
⏱️ Timing
Total: 1792ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.150.180, 104.21.48.112 |
| AAAA | 2 | 2606:4700:3034::6815:3070, 2606:4700:3037::ac43:96b4 |
| NS | 2 | art.ns.cloudflare.com, cecelia.ns.cloudflare.com |
| TXT | 1 | google-site-verification=JD36AvYNBLlMEjs |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | art.ns.cloudflare.com dns.cloudflare.com |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (a.nic.courses, b.nic.courses, c.nic.courses...)
Analysis
Hierarchy
The parent of www.dvemfc.courses is dvemfc.courses.
IP Addresses
dvemfc.courses resolves to four IP numbers: 2606:4700:3034::6815:3070, 2606:4700:3037::ac43:96b4, 104.21.48.112 and 172.67.150.180.
Other host names such as tongfusheng.cn, surgirconsultingservices.com, historicrentals.com, itfocus.net and www.ecomarkt.gr share IPs with dvemfc.courses.
Name Servers
dvemfc.courses is delegated to two name servers: art.ns.cloudflare.com and cecelia.ns.cloudflare.com.
dvemfc.courses shares the same name server setup as gurbetilan.com, footdle.com, reussirmapaces.fr, xrvyvrru.digital and aclcargo.com.
dvemfc.courses at least partially shares name servers with other domains, for instance p0ison.com, smbcrail.com, optimix.eu, 360transcription.com and techzhubs.com.
these name servers are often used in conjunction with the name servers chad.ns.cloudflare.com.
Host names with six IP numbers:
art.ns.cloudflare.com points to 2606:4700:58::adf5:3b66, 2803:f800:50::6ca2:c166, 2a06:98c1:50::ac40:2166, 108.162.193.102, 172.64.33.102 and 173.245.59.102.
cecelia.ns.cloudflare.com points to 2606:4700:50::a29f:2687, 2803:f800:50::6ca2:c287, 2a06:98c1:50::ac40:2287, 108.162.194.135, 162.159.38.135 and 172.64.34.135.