`kth-instructor.com`

DNSSEC	⚠️ Not signed
A	147.50.135.55^{🇹🇭 CSLOXINFO147.50.132.0/22 CS Loxinfo Public Company Limited 90 CW Tower A 17-20th floor Ratchadapisek Rd Huai Kwang}
NS	`ns1.ais-idc.com` ⭐
		A	2405:9800:a:a1::18^{🇹🇭 SBN-AWN-AS-02-AP2405:9800:a::/48 Route object for SBN-NIX Network}
			PTR	`ns1.ais-idc.com`
		A	49.231.33.18^{🇹🇭 SBN-AWN-AS-02-AP49.231.33.0/24 Route object for SBN-NIX Network}
			PTR	`ns1.ais-idc.com`
NS	`ns2.ais-idc.com`
		A	2405:9800:a:a2::251^{🇹🇭 SBN-AWN-AS-02-AP2405:9800:a::/48 Route object for SBN-NIX Network}
			PTR	`ns2.ais-idc.com`
		A	49.231.33.154^{🇹🇭 SBN-AWN-AS-02-AP49.231.33.0/24 Route object for SBN-NIX Network}
			PTR	`ns2.ais-idc.com`
MX	`aspmx.l.google.com` ⭐
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	172.217.76.27^{🇺🇸 Google172.217.76.0/24}
			PTR	`yulhrp-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:2801::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`lcausi-in-f27.1e100.net`
		A	192.178.128.26^{🇺🇸 Google192.178.128.0/24}
			PTR	`lcausi-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:1015::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yudfwta-in-f26.1e100.net`
		A	172.253.135.26^{🇺🇸 Google172.253.135.0/24}
			PTR	`yudfwta-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2607:f8b0:4003:c4a::1b^{🇺🇸 Google2607:f8b0:4003::/48}
			PTR	`yutulth-in-f27.1e100.net`
		A	142.251.96.26^{🇺🇸 Google142.250.0.0/15}
			PTR	`yutulth-in-f26.1e100.net`
TXT	`kyja93f.creator.cs.zohohost.com`
TXT	`v=spf1 include:_spf.google.com ~all`
TXT	`v=spf1 include:spf-1.csloxinfo.com ~all`
TXT	`m68j9g19gkppr19a7chfa725b4`
SOA	`ns1.ais-idc.com`dss@ais.co.th 2022-01-19 #14

`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=1774638747

Subdomains

www.kth-instructor.com

Same first word

kth-instructor.com

DNS History

11 records (8 active, 3 former)

○NSmaster01.csloxinfo.com2019-12-16 → 2019-12-16 · 3 obs

● 2019-12-16 10:27:48
○ 2026-03-23 10:45:48
○ 2026-03-27 19:24:22

○NSmaster02.csloxinfo.com2019-12-16 → 2019-12-16 · 3 obs

● 2019-12-16 10:27:48
○ 2026-03-23 10:45:48
○ 2026-03-27 19:24:22

●NSns1.ais-idc.com2026-03-23 → 2026-03-27 · 3 obs

○ 2019-12-16 10:27:48
● 2026-03-23 10:45:48
● 2026-03-27 19:24:22

●NSns2.ais-idc.com2026-03-23 → 2026-03-27 · 3 obs

○ 2019-12-16 10:27:48
● 2026-03-23 10:45:48
● 2026-03-27 19:24:22

●MXalt1.aspmx.l.google.com2026-03-23 → 2026-03-27 · 3 obs

○ 2019-12-16 10:27:48
● 2026-03-23 10:45:48
● 2026-03-27 19:24:22

●MXalt2.aspmx.l.google.com2026-03-23 → 2026-03-27 · 3 obs

○ 2019-12-16 10:27:48
● 2026-03-23 10:45:48
● 2026-03-27 19:24:22

●MXalt3.aspmx.l.google.com2026-03-23 → 2026-03-27 · 3 obs

○ 2019-12-16 10:27:48
● 2026-03-23 10:45:48
● 2026-03-27 19:24:22

●MXalt4.aspmx.l.google.com2026-03-23 → 2026-03-27 · 3 obs

○ 2019-12-16 10:27:48
● 2026-03-23 10:45:48
● 2026-03-27 19:24:22

●MXaspmx.l.google.com2026-03-23 → 2026-03-27 · 3 obs

○ 2019-12-16 10:27:48
● 2026-03-23 10:45:48
● 2026-03-27 19:24:22

○MXpostcorp.csloxinfo.com2019-12-16 → 2019-12-16 · 3 obs

● 2019-12-16 10:27:48
○ 2026-03-23 10:45:48
○ 2026-03-27 19:24:22

●A147.50.135.552019-12-16 → 2026-03-27 · 2 obs

● 2019-12-16 10:27:48
● 2026-03-27 19:24:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, b.gtld-servers.net, j.gtld-servers.net, d.gtld-servers.net...	-
kth-instructor.com	ns1.ais-idc.com, ns2.ais-idc.com	2 records

✅ Authoritative Response

Server:49.231.33.18

NS records: ns1.ais-idc.com, ns2.ais-idc.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kth-instructor.com (unsigned zone)

⏱️ Timing

Total: 712ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`147.50.135.55`
NS	2	`ns2.ais-idc.com, ns1.ais-idc.com`
MX	5	`alt1.aspmx.l.google.com (pri: 5), alt2.aspmx.l.google.com (pri: 5)...`
TXT	4	`kyja93f.creator.cs.zohohost.com, v=spf1 include:_spf.google.com ~all...`
SOA	1	`ns1.ais-idc.com dss.ais.co.th`