`duoletech.com`

	CNAME	`duoletech.com.146f6e09.cdnhwchcg02.com`
	CNAME	`hcdnw102.vip.cdnhwcbzj102.com`
	DNSSEC	⚠️ Not signed
	A	36.41.168.168^{🇨🇳 CHINANET-SHAANXI-CLOUD-BASE36.41.168.0/21 chinanet/CN2 shaanxi province network}
	A	218.12.76.169^{🇨🇳 CHINA169-Backbone218.12.0.0/16 CNC Group CHINA169 Hebei Province Network}
	A	221.194.141.163^{🇨🇳 CHINA169-Backbone221.194.0.0/16 China Unicom B811&A1218, China Unicom No.21, Jin-Rong Street}
	A	221.194.141.169^{🇨🇳 CHINA169-Backbone221.194.0.0/16 China Unicom B811&A1218, China Unicom No.21, Jin-Rong Street}

`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.net`nstld@verisign-grs.com serial=1776990686

Same first word

duoletech.com

Similar names

ueldotech.net

hetecloud.com

uoledtech.com

uoledtech.com.br

oltechedu.com

theecloud.net

DNS History

5 records (3 active, 2 former)

●NSdns21.hichina.com2020-01-28 → 2026-04-24 · 5 obs

○ 2015-11-17 02:20:56
● 2020-01-28 18:11:38
○ 2021-11-02 11:48:42
● 2026-04-14 01:00:14
● 2026-04-24 00:44:12

●NSdns22.hichina.com2020-01-28 → 2026-04-24 · 5 obs

○ 2015-11-17 02:20:56
● 2020-01-28 18:11:38
○ 2021-11-02 11:48:42
● 2026-04-14 01:00:14
● 2026-04-24 00:44:12

○NSns2.dns.com.cn2015-07-16 → 2015-07-16 · 3 obs

● 2015-07-16 04:32:40
○ 2015-11-17 02:20:56
○ 2026-04-24 00:44:12

○A211.154.145.102015-07-16 → 2015-07-16 · 3 obs

● 2015-07-16 04:32:40
○ 2015-11-17 02:20:56
○ 2026-04-24 00:44:12

●CNAMEduoletech.com.146f6e09.cdnhwchcg02.com2026-04-14 → 2026-04-24 · 2 obs

● 2026-04-14 01:00:14
● 2026-04-24 00:44:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
duoletech.com	dns21.hichina.com, dns22.hichina.com	18 records

✅ Authoritative Response

Server:47.118.199.222

NS records: dns21.hichina.com, dns22.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for duoletech.com (unsigned zone)

⏱️ Timing

Total: 569ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns21.hichina.com, dns22.hichina.com`
CNAME	1	`duoletech.com.146f6e09.cdnhwchcg02.com`
SOA	1	`dns21.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns21.hichina.com, dns21.hichina.com, dns21.hichina.com...)

Analysis

IP Addresses

duoletech.com points to four IP numbers: 36.41.168.168, 218.12.76.169, 221.194.141.163 and 221.194.141.169.

Other host names including hcdnw102.vip.v6.cdnhwcbzj102.com, hcdnw102.vip.cdnhwcbzj102.com, hcdnw101.scope.v6.cdnhwchcg02.com, c120.hcdnw101.vip.cdnhwcbzj102.com and hcdnw101.vip.ipv6.cdnhwcbzj102.com share IP numbers with duoletech.com.

duoletech.com - robtex.com

duoletech.com

com