`skyclassroom.net`

DNSSEC	⚠️ Not signed
A	59.110.20.97^{🇨🇳 Alibaba-Cloud59.110.0.0/17 CT BeiJing IDC}
NS	`vip1.alidns.com` ⭐
		A	2408:4009:500::1^{🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group}
		A	8.212.93.1^{🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	140.205.1.1^{🇨🇳 Alibaba-Cloud140.205.1.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	170.33.32.208^{🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.73.24^{🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.80.8^{🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
NS	`vip2.alidns.com`
		A	2408:4009:500::2^{🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group}
		A	8.212.93.2^{🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	140.205.1.2^{🇨🇳 Alibaba-Cloud140.205.1.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	170.33.32.209^{🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.73.25^{🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.80.9^{🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
SOA	`vip1.alidns.com`hostmaster@hichina.com 2025-12-11 #12

`net`

	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=1774668057

Same first word

skyclassroom.com

skyclassroom.net

DNS History

9 records (3 active, 6 former)

○NSf1g1ns1.dnspod.net2017-02-10 → 2017-02-10 · 4 obs

○ 2016-05-30 04:13:18
● 2017-02-10 15:38:44
○ 2020-02-01 07:58:26
○ 2026-03-28 03:47:18

○NSf1g1ns2.dnspod.net2017-02-10 → 2017-02-10 · 4 obs

○ 2016-05-30 04:13:18
● 2017-02-10 15:38:44
○ 2020-02-01 07:58:26
○ 2026-03-28 03:47:18

○NSns19.xincache.com2015-07-05 → 2016-05-30 · 4 obs

● 2015-07-05 08:22:44
● 2016-05-30 04:13:18
○ 2017-02-10 15:38:44
○ 2026-03-28 03:47:18

○NSns20.xincache.com2015-07-05 → 2016-05-30 · 4 obs

● 2015-07-05 08:22:44
● 2016-05-30 04:13:18
○ 2017-02-10 15:38:44
○ 2026-03-28 03:47:18

●NSvip1.alidns.com2020-02-01 → 2026-03-28 · 3 obs

○ 2017-02-10 15:38:44
● 2020-02-01 07:58:26
● 2026-03-28 03:47:18

●NSvip2.alidns.com2020-02-01 → 2026-03-28 · 3 obs

○ 2017-02-10 15:38:44
● 2020-02-01 07:58:26
● 2026-03-28 03:47:18

○A101.201.198.112016-05-30 → 2020-02-01 · 6 obs

○ 2016-02-05 05:09:38
● 2016-05-30 04:13:18
○ 2017-02-10 15:38:44
● 2020-02-01 07:58:26
○ 2026-03-28 03:47:16
○ 2026-03-28 03:47:18

○A111.161.103.712015-07-05 → 2016-02-05 · 4 obs

● 2015-07-05 08:22:44
● 2016-02-05 05:09:38
○ 2016-05-30 04:13:18
○ 2026-03-28 03:47:18

●A59.110.20.972026-03-28 → 2026-03-28 · 3 obs

○ 2020-02-01 07:58:26
● 2026-03-28 03:47:16
● 2026-03-28 03:47:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, m.gtld-servers.net, k.gtld-servers.net, c.gtld-servers.net...	-
skyclassroom.net	vip1.alidns.com, vip2.alidns.com	-

✅ Authoritative Response

Server:170.33.73.25

NS records: vip1.alidns.com, vip2.alidns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for skyclassroom.net (unsigned zone)

⏱️ Timing

Total: 942ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`59.110.20.97`
NS	2	`vip2.alidns.com, vip1.alidns.com`
SOA	1	`vip1.alidns.com hostmaster.hichina.com`

Analysis

IP Addresses

skyclassroom.net points to IP number: 59.110.20.97.

Name Servers

skyclassroom.net is delegated to two name servers: vip1.alidns.com and vip2.alidns.com.

skyclassroom.net shares the same name server setup as boboidea.com, xiaolonginc.cn, guoxiaolei.com, chah.cn and haoshsh.com.

skyclassroom.net at least partially shares name servers with other domains, for instance koradior.cn, lnvipsoft.com, jstv.com, danxia.com and xinyu.pub.

These name servers are commonly used with vip3.alidns.com and vip4.alidns.com.

Host names with six IP numbers:

vip1.alidns.com points to 2408:4009:500::1, 8.212.93.1, 140.205.1.1, 170.33.32.208, 170.33.73.24 and 170.33.80.8.

vip2.alidns.com points to 2408:4009:500::2, 8.212.93.2, 140.205.1.2, 170.33.32.209, 170.33.73.25 and 170.33.80.9.

skyclassroom.net - robtex.com