dr21.cn - robtex.com

dr21.cn

DNSSEC⚠️ Not signed
A156.252.63.210🇺🇸 GNET-AS9294156.252.63.0/24
NSa7.share-dns.com ⭐ ⚠️ Not in parent delegation
A172.64.53.25🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSa.share-dns.com ⚠️ Not in zone NS records
A172.64.53.25🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSb.share-dns.net ⚠️ Not in zone NS records
A172.64.52.239🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSb7.share-dns.net ⚠️ Not in parent delegation
A172.64.52.239🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
SOAa.share-dns.commaster@share-dns.com serial=1767159250

cn

DNSSEC🔒 Signed (DS record present)
NSa.dns.cn ⭐
NSb.dns.cn
NSc.dns.cn
NSd.dns.cn
NSe.dns.cn
NSns.cernet.net ⚠️ Not in parent delegation
SOAa.dns.cnroot@cnnic.cn serial=2034671729

Subdomains

www.dr21.cn

Same first word

dr21.cn

Similar names

dr12.cn
dr12.ru

DNS History

18 records (5 active, 13 former)

20162017201820192020202120222023202420252026NSa.share-dns.coma7.share-dns.comb.share-dns.netb7.share-dns.netns1.myhostadmin.netns2.myhostadmin.netns3.myhostadmin.netns4.myhostadmin.netns5.myhostadmin.netns6.myhostadmin.netA156.252.63.210118.123.13.51125.88.190.20125.88.190.25211.149.209.106222.73.144.180CNAMEaee21a345838835ffe0d7691b37c1a0b.dnspao.coms-50150.gotocdn.com
●NSa.share-dns.com2026-04-10 → 2026-04-15 · 3 obs
○ 2021-04-01 07:00:58
● 2026-04-10 23:04:26
● 2026-04-15 04:00:28
●NSa7.share-dns.com2026-04-10 → 2026-04-15 · 3 obs
○ 2021-04-01 07:00:58
● 2026-04-10 23:04:26
● 2026-04-15 04:00:28
●NSb.share-dns.net2026-04-10 → 2026-04-15 · 3 obs
○ 2021-04-01 07:00:58
● 2026-04-10 23:04:26
● 2026-04-15 04:00:28
●NSb7.share-dns.net2026-04-10 → 2026-04-15 · 3 obs
○ 2021-04-01 07:00:58
● 2026-04-10 23:04:26
● 2026-04-15 04:00:28
○NSns1.myhostadmin.net2015-05-31 → 2021-04-01 · 4 obs
● 2015-05-31 20:48:50
● 2021-04-01 07:00:58
○ 2026-04-10 23:04:26
○ 2026-04-15 04:00:28
○NSns2.myhostadmin.net2015-05-31 → 2021-04-01 · 4 obs
● 2015-05-31 20:48:50
● 2021-04-01 07:00:58
○ 2026-04-10 23:04:26
○ 2026-04-15 04:00:28
○NSns3.myhostadmin.net2015-05-31 → 2021-04-01 · 4 obs
● 2015-05-31 20:48:50
● 2021-04-01 07:00:58
○ 2026-04-10 23:04:26
○ 2026-04-15 04:00:28
○NSns4.myhostadmin.net2015-05-31 → 2021-04-01 · 4 obs
● 2015-05-31 20:48:50
● 2021-04-01 07:00:58
○ 2026-04-10 23:04:26
○ 2026-04-15 04:00:28
○NSns5.myhostadmin.net2015-05-31 → 2021-04-01 · 4 obs
● 2015-05-31 20:48:50
● 2021-04-01 07:00:58
○ 2026-04-10 23:04:26
○ 2026-04-15 04:00:28
○NSns6.myhostadmin.net2015-05-31 → 2021-04-01 · 4 obs
● 2015-05-31 20:48:50
● 2021-04-01 07:00:58
○ 2026-04-10 23:04:26
○ 2026-04-15 04:00:28
○A118.123.13.512016-01-17 → 2016-04-06 · 5 obs
○ 2015-10-27 00:01:36
● 2016-01-17 06:37:30
● 2016-04-06 18:19:30
○ 2016-09-11 14:11:52
○ 2026-04-15 04:00:28
○A125.88.190.202015-10-27 → 2015-10-27 · 4 obs
○ 2015-05-31 20:48:50
● 2015-10-27 00:01:36
○ 2016-01-17 06:37:30
○ 2026-04-15 04:00:28
○A125.88.190.252015-05-31 → 2015-05-31 · 3 obs
● 2015-05-31 20:48:50
○ 2017-06-07 02:40:32
○ 2026-04-15 04:00:28
●A156.252.63.2102026-04-10 → 2026-04-15 · 3 obs
○ 2021-04-01 07:00:58
● 2026-04-10 23:04:26
● 2026-04-15 04:00:28
○A211.149.209.1062021-04-01 → 2021-04-01 · 4 obs
○ 2017-06-07 02:40:32
● 2021-04-01 07:00:58
○ 2026-04-10 23:04:26
○ 2026-04-15 04:00:28
○A222.73.144.1802016-09-11 → 2016-09-11 · 4 obs
○ 2016-04-06 18:19:30
● 2016-09-11 14:11:52
○ 2017-06-07 02:40:32
○ 2026-04-15 04:00:28
○CNAMEaee21a345838835ffe0d7691b37c1a0b.dnspao.com2015-10-27 → 2016-09-11 · 7 obs
○ 2015-05-31 20:48:50
● 2015-10-27 00:01:36
○ 2016-01-17 06:37:30
○ 2016-04-06 18:19:30
● 2016-09-11 14:11:52
○ 2017-06-07 02:40:32
○ 2026-04-15 04:00:28
○CNAMEs-50150.gotocdn.com2015-05-31 → 2017-06-07 · 4 obs
● 2015-05-31 20:48:50
● 2017-06-07 02:40:32
○ 2021-04-01 07:00:58
○ 2026-04-15 04:00:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cnb.dns.cn, a.dns.cn, e.dns.cn, c.dns.cn...-
dr21.cna7.share-dns.com, b7.share-dns.net-

✅ Authoritative Response

Server:172.64.52.239

NS records: a7.share-dns.com, b7.share-dns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dr21.cn (unsigned zone)

⏱️ Timing

Total: 374ms | Queries: -

📄 Records

TypeCountSample Data
A1156.252.63.210
NS2a.share-dns.com, b.share-dns.net
SOA1a.share-dns.com master.share-dns.com

Analysis

Hierarchy

dr21.cn is the parent of www.dr21.cn.

IP Addresses

dr21.cn resolves to one IP number: 156.252.63.210.

Other host names, for instance www.mygg888.com, mygg888.com and www.dr21.cn share IP numbers with dr21.cn.

Name Servers

dr21.cn is delegated to four name servers: a7.share-dns.com, a.share-dns.com, b7.share-dns.net and b.share-dns.net.

dr21.cn at least partially shares name servers with other domains, for instance 57415.com, assocoim.com, elmasgreens.com, homewebx.com and cqcxfn.com.

These name servers are commonly used with the following name servers: a9.share-dns.com, b9.share-dns.net, a4.share-dns.com, b4.share-dns.net, a1.share-dns.com, b1.share-dns.net, a8.share-dns.com, b8.share-dns.net, a5.share-dns.com and b5.share-dns.net.

Host names with a single IP:

a7.share-dns.com points to 172.64.53.25.

a.share-dns.com points to 172.64.53.25.

b7.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: a7.share-dns.com and a.share-dns.com.

Host names pointing to 172.64.52.239: b7.share-dns.net and b.share-dns.net.