`oerv.ac.cn`

DNSSEC	⚠️ Not signed
A	36.110.52.101^{🇨🇳 CHINANET-BJ-METRO36.110.0.0/17 CHINANET Beijing province network}
NS	`dns11.hichina.com` ⭐
		A	2408:4009:501::19^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.42^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.52^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.202^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.212^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.42^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.52^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.112^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.122^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`dns12.hichina.com`
		A	2408:4009:501::20^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.41^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.51^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.201^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.211^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.41^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.51^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.111^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.121^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
SOA	`dns11.hichina.com`hostmaster@hichina.com 2026-01-09 #13

`ac.cn`

	DNSSEC	⚠️ Not signed
	NS	`a.dns.cn` ⭐ ⚠️ Not in parent delegation
	NS	`b.dns.cn` ⚠️ Not in parent delegation
	NS	`c.dns.cn` ⚠️ Not in parent delegation
	NS	`cns.cernet.net` ⚠️ Not in parent delegation
	NS	`d.dns.cn` ⚠️ Not in parent delegation
	NS	`e.dns.cn` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2027268819

WOT: SAFE (94/100)

Same first word

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DNS History

4 records (3 active, 1 former)

●NSdns11.hichina.com2026-04-29 → 2026-05-10 · 2 obs

● 2026-04-29 18:52:32
● 2026-05-10 23:19:46

●NSdns12.hichina.com2026-04-29 → 2026-05-10 · 2 obs

● 2026-04-29 18:52:32
● 2026-05-10 23:19:46

○A210.73.43.12026-04-29 → 2026-05-08 · 4 obs

● 2026-04-29 18:52:32
● 2026-05-08 07:35:06
○ 2026-05-09 23:59:44
○ 2026-05-10 23:19:46

●A36.110.52.1012026-05-09 → 2026-05-10 · 3 obs

○ 2026-05-08 07:35:06
● 2026-05-09 23:59:44
● 2026-05-10 23:19:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, e.dns.cn, d.dns.cn, c.dns.cn...	-
oerv.ac.cn	dns11.hichina.com, dns12.hichina.com	-

✅ Authoritative Response

Server:139.224.142.111

NS records: dns11.hichina.com, dns12.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for oerv.ac.cn (unsigned zone)

⏱️ Timing

Total: 3574ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`36.110.52.101`
NS	2	`dns11.hichina.com, dns12.hichina.com`
SOA	1	`dns11.hichina.com hostmaster.hichina.com`

Analysis

IP Addresses

oerv.ac.cn points to IP number: 36.110.52.101.

Other host names such as sourcemap.ac.cn, sourcemap.tech, ruyicommunity.cn, yuantu.ac.cn and isrc.ac.cn share IPs with oerv.ac.cn.

Name Servers

oerv.ac.cn is delegated to two name servers: dns11.hichina.com and dns12.hichina.com.

oerv.ac.cn shares the same name server setup as winuoutdoor.com, blhs520.com, lella.cn, doutuu.com and acereare-ele.com.

oerv.ac.cn at least partially shares name servers with other domains, for instance samin.cn, tubiew.com, igrushki.cn, gosu.cn and landscapecompany.cn.

These name servers are commonly used with ns1.alidns.com, ns2.alidns.com, dns13.hichina.com, dns14.hichina.com, expirens3.hichina.com and expirens4.hichina.com.

Nine IP numbers per host:

dns11.hichina.com points to: 2408:4009:501::19, 39.96.153.42, 39.96.153.52, 47.118.199.202, 47.118.199.212, 120.76.107.42, 120.76.107.52, 139.224.142.112 and 139.224.142.122.

dns12.hichina.com points to: 2408:4009:501::20, 39.96.153.41, 39.96.153.51, 47.118.199.201, 47.118.199.211, 120.76.107.41, 120.76.107.51, 139.224.142.111 and 139.224.142.121.

oerv.ac.cn - robtex.com

oerv.ac.cn

ac.cn