`tcku.cn`

DNSSEC	⚠️ Not signed
A	154.88.97.76^{🇭🇰 GNET-AS9294154.88.96.0/20}
NS	`ns1.julydns.com` ⭐ ⚠️ Not in parent delegation
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
NS	`ns1.judns.com` ⚠️ Not in zone NS records
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
NS	`ns2.judns.com` ⚠️ Not in zone NS records
		A	162.159.27.251^{Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.julydns.com` ⚠️ Not in parent delegation
		A	162.159.48.223^{Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
SOA	`ns1.julydns.com`master@jmdns.com serial=1772410880

`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=2034662315

Same first word

tcku.com

tcku.cn

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DNS History

11 records (5 active, 6 former)

○NSdns15.hichina.com2017-10-31 → 2017-10-31 · 4 obs

○ 2016-08-31 13:13:48
● 2017-10-31 14:09:22
○ 2026-03-13 16:01:12
○ 2026-04-12 11:41:26

○NSdns16.hichina.com2017-10-31 → 2017-10-31 · 4 obs

○ 2016-08-31 13:13:48
● 2017-10-31 14:09:22
○ 2026-03-13 16:01:12
○ 2026-04-12 11:41:26

○NSf1g1ns1.dnspod.net2015-12-08 → 2016-08-31 · 4 obs

● 2015-12-08 02:53:00
● 2016-08-31 13:13:48
○ 2017-10-31 14:09:22
○ 2026-04-12 11:41:26

○NSf1g1ns2.dnspod.net2015-12-08 → 2016-08-31 · 4 obs

● 2015-12-08 02:53:00
● 2016-08-31 13:13:48
○ 2017-10-31 14:09:22
○ 2026-04-12 11:41:26

●NSns1.judns.com2026-03-13 → 2026-04-12 · 3 obs

○ 2017-10-31 14:09:22
● 2026-03-13 16:01:12
● 2026-04-12 11:41:26

●NSns1.julydns.com2026-03-13 → 2026-04-12 · 3 obs

○ 2017-10-31 14:09:22
● 2026-03-13 16:01:12
● 2026-04-12 11:41:26

●NSns2.judns.com2026-03-13 → 2026-04-12 · 3 obs

○ 2017-10-31 14:09:22
● 2026-03-13 16:01:12
● 2026-04-12 11:41:26

●NSns2.julydns.com2026-03-13 → 2026-04-12 · 3 obs

○ 2017-10-31 14:09:22
● 2026-03-13 16:01:12
● 2026-04-12 11:41:26

●A154.88.97.762026-03-13 → 2026-04-12 · 3 obs

○ 2017-10-31 14:09:22
● 2026-03-13 16:01:12
● 2026-04-12 11:41:26

○A198.44.183.582015-12-08 → 2016-08-31 · 4 obs

● 2015-12-08 02:53:00
● 2016-08-31 13:13:48
○ 2017-10-31 14:09:22
○ 2026-04-12 11:41:26

○A47.91.225.1452017-10-31 → 2017-10-31 · 4 obs

○ 2016-08-31 13:13:48
● 2017-10-31 14:09:22
○ 2026-03-13 16:01:12
○ 2026-04-12 11:41:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
tcku.cn	ns1.judns.com, ns2.judns.com	-

✅ Authoritative Response

Server:47.97.51.45

NS records: ns1.judns.com, ns2.judns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tcku.cn (unsigned zone)

⏱️ Timing

Total: 4713ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`154.88.97.76`
NS	2	`ns1.julydns.com, ns2.julydns.com`
SOA	1	`ns1.julydns.com master.jmdns.com`

Analysis

IP Addresses

tcku.cn points to a single IP number: 154.88.97.76.

Name Servers

tcku.cn is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.

tcku.cn at least partially shares name servers with other domains, for instance bjlwdwl.com, transfersx.com, mclwsc.com, boxianghuihotel.com and cqbaqi.com.