`csumtech.cn`

DNSSEC	⚠️ Not signed
A	115.126.3.11^{🇭🇰 FTG-AS-AP115.126.3.0/24 Forewin Telecom Group Limited 5/F, 8-12 Wong Chuk Yeung Street Fo Tan, Shatin N.T. Hong Kong}
		PTR	`115-126-3-11.static.hkt.cc`
NS	`ns1.julydns.com` ⭐ ⚠️ Not in parent delegation
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
			PTR	`ip-47-97-51-45.defastlink.net`
NS	`ns1.judns.com` ⚠️ Not in zone NS records
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
			PTR	`ip-47-97-51-45.defastlink.net`
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}
			PTR	`ip-162-159-27-251.defastlink.net`
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}
			PTR	`ip-162-159-48-223.defastlink.net`
SOA	`ns1.julydns.com`master@jmdns.com serial=1769588632

`cn`

	DNSSEC	⚠️ Not signed
	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=2034546407

Subdomains

mail.csumtech.cn

Same first word

csumtech.cn

Similar names

techscum.com

usmctech.com

DNS History

12 records (5 active, 7 former)

○NSdns.bizcn.com2015-08-19 → 2020-04-12 · 4 obs

● 2015-08-19 06:03:50
● 2020-04-12 04:48:34
○ 2026-03-23 09:54:26
○ 2026-03-23 09:54:30

●NSns1.judns.com2026-03-23 → 2026-03-23 · 3 obs

○ 2020-04-12 04:48:34
● 2026-03-23 09:54:26
● 2026-03-23 09:54:30

●NSns1.julydns.com2026-03-23 → 2026-03-23 · 3 obs

○ 2020-04-12 04:48:34
● 2026-03-23 09:54:26
● 2026-03-23 09:54:30

●NSns2.judns.com2026-03-23 → 2026-03-23 · 3 obs

○ 2020-04-12 04:48:34
● 2026-03-23 09:54:26
● 2026-03-23 09:54:30

●NSns2.julydns.com2026-03-23 → 2026-03-23 · 3 obs

○ 2020-04-12 04:48:34
● 2026-03-23 09:54:26
● 2026-03-23 09:54:30

○NSns5.cnmsn.net2015-08-19 → 2020-04-12 · 4 obs

● 2015-08-19 06:03:50
● 2020-04-12 04:48:34
○ 2026-03-23 09:54:26
○ 2026-03-23 09:54:30

○NSns6.cnmsn.net2015-08-19 → 2020-04-12 · 4 obs

● 2015-08-19 06:03:50
● 2020-04-12 04:48:34
○ 2026-03-23 09:54:26
○ 2026-03-23 09:54:30

○MXmail.csumtech.cn2015-08-19 → 2020-04-12 · 4 obs

● 2015-08-19 06:03:50
● 2020-04-12 04:48:34
○ 2026-03-23 09:54:26
○ 2026-03-23 09:54:30

●A115.126.3.112026-03-23 → 2026-03-23 · 3 obs

○ 2020-04-12 04:48:34
● 2026-03-23 09:54:26
● 2026-03-23 09:54:30

○A121.198.12.1122015-08-19 → 2017-03-18 · 4 obs

● 2015-08-19 06:03:50
● 2017-03-18 03:26:44
○ 2020-04-12 04:48:34
○ 2026-03-23 09:54:30

○A121.40.60.802020-04-12 → 2020-04-12 · 4 obs

○ 2017-03-18 03:26:44
● 2020-04-12 04:48:34
○ 2026-03-23 09:54:26
○ 2026-03-23 09:54:30

○A38.6.226.562026-03-23 → 2026-03-23 · 2 obs

○ 2026-03-23 09:54:26
○ 2026-03-23 09:54:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	e.dns.cn, a.dns.cn, c.dns.cn, d.dns.cn...	-
csumtech.cn	ns1.judns.com, ns2.judns.com	-

✅ Authoritative Response

Server:162.159.27.251

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

🔒 DNSSEC Status

❌ Bogus (DNSSEC validation failed)

Validation error at cn: Error: DNS query timeout: 203.119.29.1 for DNSKEY cn

⏱️ Timing

Total: 3346ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`115.126.3.11`
NS	2	`ns1.julydns.com, ns2.julydns.com`
SOA	1	`ns1.julydns.com master.jmdns.com`

Analysis

Hierarchy

csumtech.cn is the parent of mail.csumtech.cn.

IP Addresses

csumtech.cn resolves to one IP number: 115.126.3.11.

Name Servers

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

csumtech.cn at least partially shares name servers with other domains, for instance 8ov.cn, gdzjtz.com, 46602.cn, cqszf168.com and liugejinsuo.com.