`optimal-md.com`

DNSSEC	⚠️ Not signed
A	103.47.81.123^{🇨🇳 CHINANET-YUNNAN-IDC1103.47.80.0/22 Chinanet ChengDu Network}
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=1768569603

`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=1771291435

Previously NS for

optimal-md.com

Same first word

optimal-md.com

DNS History

16 records (5 active, 11 former)

○NSdataunion.net2015-08-23 → 2017-07-21 · 5 obs

○ 2008-03-18 23:42:20
● 2015-08-23 17:43:48
● 2017-07-21 23:19:20
○ 2017-08-10 13:13:50
○ 2026-03-23 15:14:24

○NSdns.dataunion.net2008-03-18 → 2008-03-18 · 3 obs

● 2008-03-18 23:42:20
○ 2015-08-23 17:43:48
○ 2026-03-23 15:14:24

○NSf1g1ns1.dnspod.net2017-08-10 → 2017-08-19 · 5 obs

○ 2017-07-21 23:19:20
● 2017-08-10 13:13:50
● 2017-08-19 10:38:24
○ 2026-02-24 07:15:44
○ 2026-03-23 15:14:24

○NSf1g1ns2.dnspod.net2017-08-10 → 2017-08-19 · 5 obs

○ 2017-07-21 23:19:20
● 2017-08-10 13:13:50
● 2017-08-19 10:38:24
○ 2026-02-24 07:15:44
○ 2026-03-23 15:14:24

●NSns1.judns.com2026-02-24 → 2026-03-23 · 3 obs

○ 2017-08-19 10:38:24
● 2026-02-24 07:15:44
● 2026-03-23 15:14:24

●NSns1.julydns.com2026-02-24 → 2026-03-23 · 3 obs

○ 2017-08-19 10:38:24
● 2026-02-24 07:15:44
● 2026-03-23 15:14:24

●NSns2.judns.com2026-02-24 → 2026-03-23 · 3 obs

○ 2017-08-19 10:38:24
● 2026-02-24 07:15:44
● 2026-03-23 15:14:24

●NSns2.julydns.com2026-02-24 → 2026-03-23 · 3 obs

○ 2017-08-19 10:38:24
● 2026-02-24 07:15:44
● 2026-03-23 15:14:24

○NSoptimal-md.com2015-08-23 → 2017-07-21 · 5 obs

○ 2008-03-18 23:42:20
● 2015-08-23 17:43:48
● 2017-07-21 23:19:20
○ 2017-08-10 13:13:50
○ 2026-03-23 15:14:24

○NSvhost.szptt.net.cn2008-03-18 → 2008-03-18 · 3 obs

● 2008-03-18 23:42:20
○ 2015-08-23 17:43:48
○ 2026-03-23 15:14:24

○MXmsg.963.net2015-08-23 → 2017-08-19 · 5 obs

○ 2008-03-18 23:42:20
● 2015-08-23 17:43:48
● 2017-08-19 10:38:24
○ 2026-02-24 07:15:44
○ 2026-03-23 15:14:24

○MXmta.optimal-md.com2008-03-18 → 2017-08-19 · 4 obs

● 2008-03-18 23:42:20
● 2017-08-19 10:38:24
○ 2026-02-24 07:15:44
○ 2026-03-23 15:14:24

○A103.230.110.1402017-08-10 → 2017-08-19 · 5 obs

○ 2017-07-21 23:19:20
● 2017-08-10 13:13:50
● 2017-08-19 10:38:24
○ 2026-02-24 07:15:44
○ 2026-03-23 15:14:24

●A103.47.81.1232026-02-24 → 2026-03-23 · 3 obs

○ 2017-08-19 10:38:24
● 2026-02-24 07:15:44
● 2026-03-23 15:14:24

○A43.228.76.512026-02-24 → 2026-03-23 · 2 obs

○ 2026-02-24 07:15:44
○ 2026-03-23 15:14:24

○A58.61.160.802015-08-23 → 2017-07-21 · 5 obs

○ 2008-03-18 23:42:20
● 2015-08-23 17:43:48
● 2017-07-21 23:19:20
○ 2017-08-10 13:13:50
○ 2026-03-23 15:14:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
optimal-md.com	ns1.judns.com, ns2.judns.com	2 records

✅ Authoritative Response

Server:162.159.27.251

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for optimal-md.com (unsigned zone)

⏱️ Timing

Total: 3212ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.47.81.123`
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

optimal-md.com points to a single IP number: 103.47.81.123.

Other host names, for instance www.xtcwyy.com, huotun.com, tpyqx.com, hengdaluye.com and www.ekoooo.com share IP numbers with optimal-md.com.

Name Servers

optimal-md.com is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.

optimal-md.com at least partially shares name servers with other domains, for instance qxeqxiu.cn, tuckj.com, chukoudianshang.com, jmbubble.com and lamp0359.com.