`derekchou.com`

DNSSEC	⚠️ Not signed
A	172.247.153.236^{🇺🇸 POWERLINE-HK172.247.152.0/21 Powerline Internal use}
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=1733995269

`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=1774575147

Same first word

derekchou.com

DNS History

10 records (5 active, 5 former)

○NSdns13.hichina.com2015-07-04 → 2016-04-25 · 4 obs

● 2015-07-04 02:54:24
● 2016-04-25 10:03:34
○ 2026-03-17 20:48:34
○ 2026-03-27 02:00:18

○NSdns14.hichina.com2015-07-04 → 2016-04-25 · 4 obs

● 2015-07-04 02:54:24
● 2016-04-25 10:03:34
○ 2026-03-17 20:48:34
○ 2026-03-27 02:00:18

●NSns1.judns.com2026-03-17 → 2026-03-27 · 3 obs

○ 2016-04-25 10:03:34
● 2026-03-17 20:48:34
● 2026-03-27 02:00:18

●NSns1.julydns.com2026-03-17 → 2026-03-27 · 3 obs

○ 2016-04-25 10:03:34
● 2026-03-17 20:48:34
● 2026-03-27 02:00:18

●NSns2.judns.com2026-03-17 → 2026-03-27 · 3 obs

○ 2016-04-25 10:03:34
● 2026-03-17 20:48:34
● 2026-03-27 02:00:18

●NSns2.julydns.com2026-03-17 → 2026-03-27 · 3 obs

○ 2016-04-25 10:03:34
● 2026-03-17 20:48:34
● 2026-03-27 02:00:18

○MXmxn.mxhichina.com2015-07-04 → 2016-04-25 · 4 obs

● 2015-07-04 02:54:24
● 2016-04-25 10:03:34
○ 2026-03-17 20:48:34
○ 2026-03-27 02:00:18

○MXmxw.mxhichina.com2015-07-04 → 2016-04-25 · 4 obs

● 2015-07-04 02:54:24
● 2016-04-25 10:03:34
○ 2026-03-17 20:48:34
○ 2026-03-27 02:00:18

○A123.57.36.1302015-07-04 → 2017-06-08 · 4 obs

● 2015-07-04 02:54:24
● 2017-06-08 17:09:30
○ 2026-03-17 20:48:34
○ 2026-03-27 02:00:18

●A172.247.153.2362026-03-17 → 2026-03-27 · 3 obs

○ 2017-06-08 17:09:30
● 2026-03-17 20:48:34
● 2026-03-27 02:00:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, e.gtld-servers.net, g.gtld-servers.net, k.gtld-servers.net...	-
derekchou.com	ns1.judns.com, ns2.judns.com	2 records

✅ Authoritative Response

Server:47.97.51.45

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for derekchou.com (unsigned zone)

⏱️ Timing

Total: 504ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`172.247.153.236`
NS	2	`ns1.julydns.com, ns2.julydns.com`
SOA	1	`ns1.julydns.com master.jmdns.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.judns.com, ns2.judns.com)

Analysis

IP Addresses

derekchou.com resolves to one IP number: 172.247.153.236.

Other host names, for instance cmsns.com, share IP numbers with derekchou.com.

Name Servers

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

derekchou.com at least partially shares name servers with other domains, for instance ufawin.com, dycgl.com, ikstpay.com, c162b.cn and huko014.com.