`ctbuzk.cn`

DNSSEC	⚠️ Not signed
NS	`dm1.longmingdns.com` ⭐
		A	218.98.111.163^{🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
NS	`dm2.longmingdns.com`
		A	183.253.57.197^{🇨🇳 CHINAMOBILE-CN183.253.0.0/16 CMI (Customer Route)}
		A	211.99.99.56^{🇨🇳 DONGGUAN-1211.99.99.0/24}
SOA	`dm1.longmingdns.com`dnsadmin@longmingdns.com serial=1781095147

`cn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2035158735

Same first word

ctbuzk.cn

Similar names

bckutz.com

kbcutz.com

DNS History

11 records (2 active, 9 former)

●NSdm1.longmingdns.com2026-02-20 → 2026-08-09 · 3 obs

○ 2015-10-20 20:35:50
● 2026-02-20 16:09:02
● 2026-08-09 08:52:02

●NSdm2.longmingdns.com2026-02-20 → 2026-08-09 · 3 obs

○ 2015-10-20 20:35:50
● 2026-02-20 16:09:02
● 2026-08-09 08:52:02

○NSf1g1ns1.dnspod.net2015-05-31 → 2015-10-20 · 4 obs

● 2015-05-31 14:18:04
● 2015-10-20 20:35:50
○ 2026-02-20 16:09:02
○ 2026-08-09 08:52:02

○NSf1g1ns2.dnspod.net2015-05-31 → 2015-10-20 · 4 obs

● 2015-05-31 14:18:04
● 2015-10-20 20:35:50
○ 2026-02-20 16:09:02
○ 2026-08-09 08:52:02

○MXmail.skrimple.com2016-01-01 → 2017-06-23 · 4 obs

● 2016-01-01 06:14:08
● 2017-06-23 17:39:06
○ 2026-02-20 16:09:02
○ 2026-08-09 08:52:02

○A103.51.144.812016-09-18 → 2016-09-18 · 4 obs

○ 2016-03-29 22:21:50
● 2016-09-18 05:48:20
○ 2017-06-23 17:39:06
○ 2026-08-09 08:52:02

○A123.254.111.1902015-05-31 → 2015-10-20 · 4 obs

● 2015-05-31 14:18:04
● 2015-10-20 20:35:50
○ 2016-01-01 06:14:08
○ 2026-08-09 08:52:02

○A154.85.160.982026-03-28 → 2026-03-28 · 3 obs

○ 2026-03-20 03:26:44
● 2026-03-28 05:18:22
○ 2026-08-09 08:52:02

○A23.27.98.2372017-06-23 → 2017-06-23 · 4 obs

○ 2016-09-18 05:48:20
● 2017-06-23 17:39:06
○ 2026-02-20 16:09:02
○ 2026-08-09 08:52:02

○A45.194.191.522026-02-20 → 2026-03-20 · 5 obs

○ 2017-06-23 17:39:06
● 2026-02-20 16:09:02
● 2026-03-20 03:26:44
○ 2026-03-28 05:18:22
○ 2026-08-09 08:52:02

○A65.19.157.2352016-01-01 → 2016-03-29 · 5 obs

○ 2015-10-20 20:35:50
● 2016-01-01 06:14:08
● 2016-03-29 22:21:50
○ 2016-09-18 05:48:20
○ 2026-08-09 08:52:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, c.dns.cn, e.dns.cn, d.dns.cn...	-
ctbuzk.cn	dm1.longmingdns.com, dm2.longmingdns.com	-

✅ Authoritative Response

Server:218.98.111.163

NS records: dm1.longmingdns.com, dm2.longmingdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctbuzk.cn (unsigned zone)

⏱️ Timing

Total: 3657ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dm1.longmingdns.com, dm2.longmingdns.com`
SOA	1	`dm1.longmingdns.com dnsadmin.longmingdns`

Analysis

Name Servers

DNS delegation for ctbuzk.cn points to two name servers: dm1.longmingdns.com and dm2.longmingdns.com.

ctbuzk.cn uses the same name servers as several other domains — among them 016h.cn, irnx.com.cn, zhhuasheng.cn and two more.

Hostnames that resolve to two IP addresses:

dm2.longmingdns.com has two IP addresses: 183.253.57.197 and 211.99.99.56.

Hosts with just one IP address:

dm1.longmingdns.com directs to 218.98.111.163.

ctbuzk.cn - robtex.com

ctbuzk.cn

cn