c21thg.com - robtex.com
c21thg.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.115.48.135🇨🇳 CLOUDIE-AS-AP103.115.48.0/24 | ||||||
| PTR | unknown.itsidc.com | ||||||
| NS | a10.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 | ||||||
| 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 | ||||||
| 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 | ||||||
| NS | b10.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 | ||||||
| SOA | a.share-dns.commaster@share-dns.com serial=1778116570 | ||||||
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=1778647986 | ||||||
Previously MX for
c21thg.com |
Subdomains
www.c21thg.com |
Same first word
c21thg.com |
DNS History
13 records (5 active, 8 former)
●NSa.share-dns.com2026-05-10 → 2026-05-13 · 3 obs
● 2026-05-10 16:34:08
● 2026-05-13 05:07:40
●NSa10.share-dns.com2026-05-10 → 2026-05-13 · 3 obs
● 2026-05-10 16:34:08
● 2026-05-13 05:07:40
●NSb.share-dns.net2026-05-10 → 2026-05-13 · 3 obs
● 2026-05-10 16:34:08
● 2026-05-13 05:07:40
●NSb10.share-dns.net2026-05-10 → 2026-05-13 · 3 obs
● 2026-05-10 16:34:08
● 2026-05-13 05:07:40
○NSns1.md-pb-iqsv.com2017-06-21 → 2017-06-21 · 4 obs
● 2017-06-21 18:21:26
○ 2026-05-10 16:34:08
○ 2026-05-13 05:07:40
○NSns1.winniser.net2015-08-14 → 2016-09-23 · 4 obs
● 2016-09-23 15:20:34
○ 2017-06-21 18:21:26
○ 2026-05-13 05:07:40
○NSns2.md-pb-iqsv.com2017-06-21 → 2017-06-21 · 4 obs
● 2017-06-21 18:21:26
○ 2026-05-10 16:34:08
○ 2026-05-13 05:07:40
○NSns2.winniser.net2015-08-14 → 2016-09-23 · 4 obs
● 2016-09-23 15:20:34
○ 2017-06-21 18:21:26
○ 2026-05-13 05:07:40
○MXc21thg.com2017-06-21 → 2017-06-21 · 4 obs
● 2017-06-21 18:21:26
○ 2026-05-10 16:34:08
○ 2026-05-13 05:07:40
○MXmail.c21thg.com2015-08-14 → 2016-09-23 · 4 obs
● 2016-09-23 15:20:34
○ 2017-06-21 18:21:26
○ 2026-05-13 05:07:40
●A103.115.48.1352026-05-10 → 2026-05-13 · 3 obs
● 2026-05-10 16:34:08
● 2026-05-13 05:07:40
○A104.245.200.1782015-08-14 → 2016-09-23 · 4 obs
● 2016-09-23 15:20:34
○ 2017-06-21 18:21:26
○ 2026-05-13 05:07:40
○A209.164.116.332017-06-21 → 2017-06-21 · 4 obs
● 2017-06-21 18:21:26
○ 2026-05-10 16:34:08
○ 2026-05-13 05:07:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | k.gtld-servers.net, m.gtld-servers.net, i.gtld-servers.net, g.gtld-servers.net... | - |
| c21thg.com | b10.share-dns.net, a10.share-dns.com | 1 record |
✅ Authoritative Response
Server:172.64.53.25
NS records: b10.share-dns.net, a10.share-dns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for c21thg.com (unsigned zone)
⏱️ Timing
Total: 1025ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.115.48.135 |
| 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 (a10.share-dns.com)
Analysis
Hierarchy
c21thg.com is the parent of www.c21thg.com.
IP Addresses
c21thg.com resolves to one IP number: 103.115.48.135.
other host names including uk83.com, 2of7.com, fudgerub.com, www.8j83.com and www.c21thg.com share IP numbers with c21thg.com.
Name Servers
c21thg.com is delegated to four name servers: a10.share-dns.com, a.share-dns.com, b10.share-dns.net and b.share-dns.net.
c21thg.com at least partially shares name servers with other domains, for instance eightsand.com, nongyiyun.com, qance.net, bosnytec.com and lwhouhua.com.
These name servers are commonly used with the following name servers: a3.share-dns.com, b3.share-dns.net, a1.share-dns.com, b1.share-dns.net, a6.share-dns.com, b6.share-dns.net, a4.share-dns.com, b4.share-dns.net, a11.share-dns.com and b11.share-dns.net.
Host names with a single IP:
a10.share-dns.com points to 172.64.53.25.
a.share-dns.com points to 172.64.53.25.
b10.share-dns.net points to 172.64.52.239.
b.share-dns.net points to 172.64.52.239.
Host names pointing to 172.64.53.25: a10.share-dns.com and a.share-dns.com.
Host names pointing to 172.64.52.239: b10.share-dns.net and b.share-dns.net.