polytecchina.com - dns.ninja

`polytecchina.com`

DNSSEC	⚠️ Not signed
NS	`ns1-04.azure-dns.com` ⭐
		A	2603:1061:0:700::4^{🇺🇸 Microsoft2603:1000::/25 MICROSOFT}
			PTR	`ns1-04.azure-dns.com`
		A	13.107.236.4^{🇺🇸 Microsoft13.104.0.0/14 MICROSOFT}
			PTR	`ns1-04.azure-dns.com`
NS	`ns2-04.azure-dns.net`
		A	2620:1ec:8ec:700::4^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns2-04.azure-dns.net`
		A	150.171.21.4^{🇺🇸 Microsoft150.171.0.0/16 MICROSOFT}
			PTR	`ns2-04.azure-dns.net`
NS	`ns3-04.azure-dns.org`
		A	2a01:111:4000:700::4^{🇬🇧 Microsoft2a01:111:4000::/36}
			PTR	`ns3-04.azure-dns.org`
		A	204.14.183.4^{🇺🇸 Microsoft204.14.180.0/22}
			PTR	`ns3-04.azure-dns.org`
NS	`ns4-04.azure-dns.info`
		A	2620:1ec:bda:700::4^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns4-04.azure-dns.info`
		A	208.84.5.4^{🇺🇸 Microsoft208.84.0.0/21 MICROSOFT}
			PTR	`ns4-04.azure-dns.info`
MX	`mail1.polytecgroup.com` ⭐
		A	203.198.52.26^{🇭🇰 PCCW-IMSBIZ-Network203.198.48.0/21 PCCW IMS Limited 14/F, Lockhart Exchange Bldg No. 3 Hennessy Road}
			PTR	`mail1.polytecgroup.com`
MX	`mail2.polytecgroup.com`⁽²⁰⁾
		A	61.244.18.154^{🇭🇰 HKBN61.244.16.0/21 Hong Kong Broadband Network Ltd 15/F Trans Asia Centre 18 Kin Hong Street}
			PTR	`mail2.polytecgroup.com`
MX	`mail4.polytecgroup.com`⁽³⁰⁾
		A	202.175.185.122^{🇲🇴 CTM-1202.175.160.0/19 CTM Internet Services Companhia de Telecomunicacoes de Macau S.A.R.L.}
			PTR	`mail4.polytecgroup.com`
TXT	`v=spf1 ip4:202.175.185.122 ip4:61.244.197.121 ip4:61.239.252.154 ip4:61.244.1...`
TXT	`MS=ms95717146`
SOA	`ns1-04.azure-dns.com`azuredns-hostmaster@microsoft.com serial=1

`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=1780629374

Same first word

polytecchina.com

Similar names

polytechnica.pt

polytechnica.com.br

DNS History

10 records (7 active, 3 former)

●NSns1-04.azure-dns.com2026-03-05 → 2026-06-05 · 3 obs

○ 2017-03-28 17:19:54
● 2026-03-05 07:20:26
● 2026-06-05 03:16:56

○NSns1.dnshosting.hk2015-07-14 → 2017-03-28 · 4 obs

● 2015-07-14 22:05:18
● 2017-03-28 17:19:54
○ 2026-03-05 07:20:26
○ 2026-06-05 03:16:56

●NSns2-04.azure-dns.net2026-03-05 → 2026-06-05 · 3 obs

○ 2017-03-28 17:19:54
● 2026-03-05 07:20:26
● 2026-06-05 03:16:56

○NSns2.dnshosting.hk2015-07-14 → 2017-03-28 · 4 obs

● 2015-07-14 22:05:18
● 2017-03-28 17:19:54
○ 2026-03-05 07:20:26
○ 2026-06-05 03:16:56

●NSns3-04.azure-dns.org2026-03-05 → 2026-06-05 · 3 obs

○ 2017-03-28 17:19:54
● 2026-03-05 07:20:26
● 2026-06-05 03:16:56

●NSns4-04.azure-dns.info2026-03-05 → 2026-06-05 · 3 obs

○ 2017-03-28 17:19:54
● 2026-03-05 07:20:26
● 2026-06-05 03:16:56

●MXmail1.polytecgroup.com2015-07-14 → 2026-06-05 · 2 obs

● 2015-07-14 22:05:18
● 2026-06-05 03:16:56

●MXmail2.polytecgroup.com2015-07-14 → 2026-06-05 · 2 obs

● 2015-07-14 22:05:18
● 2026-06-05 03:16:56

○MXmail3.polytecgroup.com2015-07-14 → 2017-03-28 · 4 obs

● 2015-07-14 22:05:18
● 2017-03-28 17:19:54
○ 2026-03-05 07:20:26
○ 2026-06-05 03:16:56

●MXmail4.polytecgroup.com2026-03-05 → 2026-06-05 · 3 obs

○ 2017-03-28 17:19:54
● 2026-03-05 07:20:26
● 2026-06-05 03:16:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, g.gtld-servers.net...	-
polytecchina.com	ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info	2 records

✅ Authoritative Response

Server:204.14.183.4

NS records: ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for polytecchina.com (unsigned zone)

⏱️ Timing

Total: 1543ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`ns1-04.azure-dns.com, ns2-04.azure-dns.net...`
MX	3	`mail1.polytecgroup.com (pri: 10), mail2.polytecgroup.com (pri: 20)...`
TXT	2	`v=spf1 ip4:202.175.185.122 ip4:61.244.19, MS=ms95717146`
SOA	1	`ns1-04.azure-dns.com azuredns-hostmaster`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1-04.azure-dns.com, ns1-04.azure-dns.com)

Analysis

Name Servers

polytecchina.com carries NS records pointing to 4 name servers: ns1-04.azure-dns.com, ns4-04.azure-dns.info, ns2-04.azure-dns.net and ns3-04.azure-dns.org.

The name servers of polytecchina.com overlap at least partially with those of other domains — among them 58.61.20.in-addr.arpa, oral-b.co.in, itoi-gc.jp and two more.

Each of the four hosts ns1-04.azure-dns.com, ns4-04.azure-dns.info, ns2-04.azure-dns.net and ns3-04.azure-dns.org has two IP addresses. ns1-04.azure-dns.com points to 13.107.236.4 and 2603:1061:0:700::4. ns4-04.azure-dns.info points to 208.84.5.4 and 2620:1ec:bda:700::4. ns2-04.azure-dns.net points to 150.171.21.4 and 2620:1ec:8ec:700::4. ns3-04.azure-dns.org points to 204.14.183.4 and 2a01:111:4000:700::4.

Mail Servers

Mail for polytecchina.com is routed through three mail servers — mail1.polytecgroup.com, mail2.polytecgroup.com and mail4.polytecgroup.com.

At least some of the mail servers used by polytecchina.com are shared with other domains: kdc.com.hk, polytecgroup.com, hk-ice.com and two others among them.

These mail servers tend to be used in conjunction with the mail servers mail3.polytecgroup.com.

Three hostnames, one IP address apiece: mail1.polytecgroup.com resolves to 203.198.52.26, mail2.polytecgroup.com resolves to 61.244.18.154 and mail4.polytecgroup.com resolves to 202.175.185.122.