`ptecourse.com`

DNSSEC	⚠️ Not signed
A	47.91.137.66^{🇭🇰 Alibaba-Cloud47.91.128.0/18 Alibaba Cloud}
NS	`ns1.crazydomains.com` ⭐
		A	2a00:fd80:aaaa:ffff::eeee:c1^{🇦🇪 DREAMSCAPE-AS-AP2a00:fd80:aaaa::/48 AS38719 IPv6 Anycast Prefix}
			PTR	`ns1.crazydomains.com`
		A	27.124.125.7^{🇦🇺 DREAMSCAPE-AS-AP27.124.125.0/24 Dreamscape Networks PTY LTD Suite 4.07 247 Coward Street}
			PTR	`ns1.crazydomains.com`
NS	`ns2.crazydomains.com`
		A	2a00:fd80:aaaa:ffff::eeee:c2^{🇦🇪 DREAMSCAPE-AS-AP2a00:fd80:aaaa::/48 AS38719 IPv6 Anycast Prefix}
			PTR	`ns2.crazydomains.com`
		A	27.124.125.8^{🇦🇺 DREAMSCAPE-AS-AP27.124.125.0/24 Dreamscape Networks PTY LTD Suite 4.07 247 Coward Street}
			PTR	`ns2.crazydomains.com`
MX	`mxn.mxhichina.com`⁽¹⁰⁾
		A	47.246.136.231^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`cz-clare.com`
			PTR	`reachsmartdwell.com`
			PTR	`wevolt.tech`
		A	47.246.137.47^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
SOA	`ns1.crazydomains.com`admin@syrahost.com serial=1608487234

`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=1774434762

Same first word

ptecourse.com

Similar names

DNS History

6 records (4 active, 2 former)

●NSns1.crazydomains.com2026-02-28 → 2026-03-25 · 3 obs

○ 2018-08-05 13:30:30
● 2026-02-28 22:11:08
● 2026-03-25 10:56:52

○NSns1.dnspackage.com2016-12-24 → 2018-08-05 · 4 obs

● 2016-12-24 15:44:04
● 2018-08-05 13:30:30
○ 2026-02-28 22:11:08
○ 2026-03-25 10:56:52

●NSns2.crazydomains.com2026-02-28 → 2026-03-25 · 3 obs

○ 2018-08-05 13:30:30
● 2026-02-28 22:11:08
● 2026-03-25 10:56:52

○NSns2.dnspackage.com2016-12-24 → 2018-08-05 · 4 obs

● 2016-12-24 15:44:04
● 2018-08-05 13:30:30
○ 2026-02-28 22:11:08
○ 2026-03-25 10:56:52

●MXmxn.mxhichina.com2016-12-24 → 2026-03-25 · 2 obs

● 2016-12-24 15:44:04
● 2026-03-25 10:56:52

●A47.91.137.662016-12-24 → 2026-03-25 · 2 obs

● 2016-12-24 15:44:04
● 2026-03-25 10:56:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
ptecourse.com	ns1.crazydomains.com, ns2.crazydomains.com	4 records

✅ Authoritative Response

Server:27.124.125.8

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ptecourse.com (unsigned zone)

⏱️ Timing

Total: 477ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`47.91.137.66`
NS	2	`ns2.crazydomains.com, ns1.crazydomains.com`
MX	2	`mxn.mxhichina.com (pri: 10), mxn.mxhichina.com (pri: 5)`
SOA	1	`ns1.crazydomains.com admin.syrahost.com`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.crazydomains.com, ns1.crazydomains.com, ns2.crazydomains.com...)

Analysis

IP Addresses

ptecourse.com points to an IP address: 47.91.137.66.

Name Servers

Two name servers ns1.crazydomains.com and ns2.crazydomains.com handle the delegation for ptecourse.com.

ptecourse.com shares the same name server setup as other domains, for instance scottmarsh.com.au, shbs.com.au, seekproductions.com, landscapecentre.com.au and lungeclub.com.

ptecourse.com at least partially shares name servers with other domains, for instance gtrading-jp.com, xinying.com.au, screwbox.com.au, kidsbiz.com.au and 1985.com.au.

these name servers are commonly used with ns1.crazydomains.com.au, ns2.crazydomains.com.au, ns1.openhost.co.nz, ns2.openhost.co.nz, ns3.openhost.co.nz, ns10.domains4less.co.nz, ns11.domains4less.co.nz, ns1.cheapdomains.com.au, ns2.cheapdomains.com.au and ns1.secureparkme.com.

Host names with two IP numbers:

ns1.crazydomains.com points to 2a00:fd80:aaaa:ffff::eeee:c1 and 27.124.125.7.

ns2.crazydomains.com points to 2a00:fd80:aaaa:ffff::eeee:c2 and 27.124.125.8.

Mail Servers

ptecourse.com is handled by a single mail server, mxn.mxhichina.com.

ptecourse.com uses the same mail server setup as other domains, for instance tongbangkeji.cn, gs-blife.com, esez.cn, prptmetal.com and hk-care.com.

ptecourse.com shares at least partially some mail servers with other domains, for instance gzkanzaki.com, chinaoptoplex.com, excel-ind.com, inwindo.com and srabt.com.

These mail servers are often used together with mxw.mxhichina.com, mx1.qiye.aliyun.com, mx2.qiye.aliyun.com, mx3.qiye.aliyun.com and mx01.dm.aliyun.com.

mxn.mxhichina.com resolves to two IPs: 47.246.136.231 and 47.246.137.47.

ptecourse.com - robtex.com

ptecourse.com

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