coursebuilder.dev - dns.ninja
coursebuilder.dev
dev
| 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=1 | ||||||
Same first word
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DNS History
13 records (9 active, 4 former)
●NSns1.vercel-dns.com2026-09-26 → 2026-10-03 · 2 obs
● 2026-10-03 02:27:36
●NSns2.vercel-dns.com2026-09-26 → 2026-10-03 · 2 obs
● 2026-10-03 02:27:36
●MXalt1.aspmx.l.google.com2026-09-26 → 2026-10-03 · 2 obs
● 2026-10-03 02:27:36
●MXalt2.aspmx.l.google.com2026-09-26 → 2026-10-03 · 2 obs
● 2026-10-03 02:27:36
●MXalt3.aspmx.l.google.com2026-09-26 → 2026-10-03 · 2 obs
● 2026-10-03 02:27:36
●MXalt4.aspmx.l.google.com2026-09-26 → 2026-10-03 · 2 obs
● 2026-10-03 02:27:36
●MXaspmx.l.google.com2026-09-26 → 2026-10-03 · 2 obs
● 2026-10-03 02:27:36
●A216.150.1.1292026-10-03 → 2026-10-03 · 3 obs
● 2026-10-03 02:27:32
● 2026-10-03 02:27:36
○A216.150.1.1932026-10-02 → 2026-10-02 · 4 obs
● 2026-10-02 02:45:42
○ 2026-10-03 02:27:32
○ 2026-10-03 02:27:36
○A216.150.1.652026-09-28 → 2026-09-28 · 4 obs
● 2026-09-28 07:35:48
○ 2026-10-03 02:27:32
○ 2026-10-03 02:27:36
○A216.150.16.12026-09-28 → 2026-09-28 · 4 obs
● 2026-09-28 07:35:48
○ 2026-10-02 02:45:42
○ 2026-10-03 02:27:36
●A216.150.16.1932026-09-26 → 2026-10-03 · 4 obs
○ 2026-09-28 07:35:48
● 2026-10-03 02:27:32
● 2026-10-03 02:27:36
○A216.150.16.652026-09-26 → 2026-09-26 · 3 obs
○ 2026-09-28 07:35:48
○ 2026-10-03 02:27:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| dev | ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com... | - |
| coursebuilder.dev | ns2.vercel-dns.com, ns1.vercel-dns.com | - |
✅ Authoritative Response
Server:198.51.45.13
NS records: ns2.vercel-dns.com, ns1.vercel-dns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coursebuilder.dev (unsigned zone)
⏱️ Timing
Total: 558ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 216.150.16.193, 216.150.1.129 |
| NS | 2 | ns1.vercel-dns.com, ns2.vercel-dns.com |
| MX | 5 | aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)... |
| TXT | 2 | google-site-verification=tvTBJKwPUKeRl7V, v=spf1 include:_spf.google.com ~all |
| SOA | 1 | ns1.vercel-dns.com hostmaster.nsone.net |
Analysis
IP Addresses
coursebuilder.dev resolves to the IP addresses 216.150.1.129 and 216.150.16.193
Among the host names that share IP numbers with coursebuilder.dev are drtzrt.com, profitpins.com, presolt.com and two others.
Name Servers
coursebuilder.dev uses two name servers for its delegation: ns1.vercel-dns.com and ns2.vercel-dns.com.
coursebuilder.dev has the same name server delegation as a number of other domains, such as moiseshp.dev, riescomotors.cl, figarocrm.com.br and two more.
At least some of coursebuilder.dev's name servers are also used by other domains, among them commitbrew.com.
The two host names ns1.vercel-dns.com and ns2.vercel-dns.com each have a pair of IP addresses: ns1.vercel-dns.com has 198.51.44.13 and 2620:4d:4000:6259:7:13:0:1, and ns2.vercel-dns.com has 198.51.45.13 and 2a00:edc0:6259:7:13::2.
Mail Servers
coursebuilder.dev is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.
coursebuilder.dev shares at least some of its mail servers with other domains — for example sgmdigitalmarket.in, livaclean.com, bullseyegolfclub.com and two more.
It is common for these mail servers to co-occur with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com as mail servers.
Hosts with two IP numbers each:
aspmx.l.google.com directs traffic to 172.253.122.26 and 2607:f8b0:4004:c23::1b.
alt1.aspmx.l.google.com directs traffic to 192.178.234.27 and 2800:3f0:4003:c14::1a.
alt2.aspmx.l.google.com directs traffic to 172.253.116.26 and 2a00:1450:400b:c02::1b.
alt3.aspmx.l.google.com directs traffic to 192.178.223.26 and 2a00:1450:4009:c0f::1b.
alt4.aspmx.l.google.com directs traffic to 172.253.157.27 and 2a00:1450:400c:c23::1b.