dmc-edu.com - robtex.com
dmc-edu.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 156.251.247.42🇺🇸 CNSERVERSLLC156.251.247.0/24 Proxy-registered route object | ||||||
| NS | a2.share-dns.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 172.64.53.25🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ip-172-64-53-25.defastlink.net | ||||||
| NS | a.share-dns.com ⚠️ Not in zone NS records | ||||||
| A | 172.64.53.25🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ip-172-64-53-25.defastlink.net | ||||||
| NS | b.share-dns.net ⚠️ Not in zone NS records | ||||||
| A | 172.64.52.239🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ip-172-64-52-239.defastlink.net | ||||||
| NS | b2.share-dns.net ⚠️ Not in parent delegation | ||||||
| A | 172.64.52.239🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ip-172-64-52-239.defastlink.net | ||||||
| SOA | a.share-dns.commaster@share-dns.com serial=1773231654 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1771291435 | ||||||
Subdomains
ctc.dmc-edu.com |
Same first word
dmc-edu.com |
DNS History
10 records (5 active, 5 former)
●NSa.share-dns.com2026-02-28 → 2026-03-23 · 3 obs
● 2026-02-28 19:31:18
● 2026-03-23 08:44:46
●NSa2.share-dns.com2026-02-28 → 2026-03-23 · 3 obs
● 2026-02-28 19:31:18
● 2026-03-23 08:44:46
●NSb.share-dns.net2026-02-28 → 2026-03-23 · 3 obs
● 2026-02-28 19:31:18
● 2026-03-23 08:44:46
●NSb2.share-dns.net2026-02-28 → 2026-03-23 · 3 obs
● 2026-02-28 19:31:18
● 2026-03-23 08:44:46
○NSf1g1ns1.dnspod.net2015-07-24 → 2017-01-21 · 4 obs
● 2017-01-21 14:33:12
○ 2026-02-28 19:31:18
○ 2026-03-23 08:44:46
○NSf1g1ns2.dnspod.net2015-07-24 → 2017-01-21 · 4 obs
● 2017-01-21 14:33:12
○ 2026-02-28 19:31:18
○ 2026-03-23 08:44:46
○MXmxbiz1.qq.com2015-07-24 → 2016-02-11 · 4 obs
● 2016-02-11 01:00:38
○ 2026-02-28 19:31:18
○ 2026-03-23 08:44:46
○MXmxbiz2.qq.com2015-07-24 → 2016-02-11 · 4 obs
● 2016-02-11 01:00:38
○ 2026-02-28 19:31:18
○ 2026-03-23 08:44:46
●A156.251.247.422026-02-28 → 2026-03-23 · 3 obs
● 2026-02-28 19:31:18
● 2026-03-23 08:44:46
○A222.73.136.2182015-07-24 → 2017-01-21 · 4 obs
● 2017-01-21 14:33:12
○ 2026-02-28 19:31:18
○ 2026-03-23 08:44:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | f.gtld-servers.net, m.gtld-servers.net, k.gtld-servers.net, g.gtld-servers.net... | - |
| dmc-edu.com | b2.share-dns.net, a2.share-dns.com | 1 record |
✅ Authoritative Response
Server:172.64.53.25
NS records: b2.share-dns.net, a2.share-dns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dmc-edu.com (unsigned zone)
⏱️ Timing
Total: 373ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 156.251.247.42 |
| NS | 2 | a.share-dns.com, b.share-dns.net |
| SOA | 1 | a.share-dns.com master.share-dns.com |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (a2.share-dns.com)
Analysis
Hierarchy
dmc-edu.com is the parent of ctc.dmc-edu.com.
IP Addresses
dmc-edu.com resolves to a single IP address: 156.251.247.42.
Other host names, for instance ctc.dmc-edu.com, share IP numbers with dmc-edu.com.
Name Servers
dmc-edu.com is delegated to four name servers: a2.share-dns.com, a.share-dns.com, b2.share-dns.net and b.share-dns.net.
dmc-edu.com at least partially shares name servers with other domains, including 0536sgz.com, gxtpw.net, diandianketang.com, hhyxd.com and cdjinwowo.com.
These name servers are typically used together with the name servers a8.share-dns.com, b8.share-dns.net, a9.share-dns.com, b9.share-dns.net, a12.share-dns.com, b12.share-dns.net, a6.share-dns.com, b6.share-dns.net, a3.share-dns.com and b3.share-dns.net.
Host names with a single IP number:
a2.share-dns.com resolves to 172.64.53.25.
a.share-dns.com resolves to 172.64.53.25.
b2.share-dns.net resolves to 172.64.52.239.
b.share-dns.net resolves to 172.64.52.239.
Host names pointing to 172.64.53.25: a2.share-dns.com, a.share-dns.com.
Host names pointing to 172.64.52.239: b2.share-dns.net, b.share-dns.net.