`nb75.cn`

DNSSEC	⚠️ Not signed
A	156.247.93.241^{🇧🇷 GNET-AS9294156.247.80.0/20}
NS	`ns1.julydns.com` ⭐ ⚠️ Not in parent delegation
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
			PTR	`ip-47-97-51-45.defastlink.net`
NS	`ns1.judns.com` ⚠️ Not in zone NS records
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
			PTR	`ip-47-97-51-45.defastlink.net`
NS	`ns2.judns.com` ⚠️ Not in zone NS records
		A	162.159.27.251^{Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ip-162-159-27-251.defastlink.net`
NS	`ns2.julydns.com` ⚠️ Not in parent delegation
		A	162.159.48.223^{Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ip-162-159-48-223.defastlink.net`
SOA	`ns1.julydns.com`master@jmdns.com serial=1765180126

`cn`

	DNSSEC	⚠️ Not signed
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2034546407

Subdomains

5b.nb75.cn

Same first word

nb75.cn

nb75.casa

Similar names

7nb5.com

bn57.com

DNS History

11 records (5 active, 6 former)

○NSf1g1ns1.dnspod.net2017-05-30 → 2017-05-30 · 3 obs

● 2017-05-30 01:45:48
○ 2020-04-04 17:32:12
○ 2026-03-22 16:05:10

○NSf1g1ns2.dnspod.net2017-05-30 → 2017-05-30 · 3 obs

● 2017-05-30 01:45:48
○ 2020-04-04 17:32:12
○ 2026-03-22 16:05:10

○NSjm1.alidns.com2020-04-04 → 2020-04-04 · 4 obs

○ 2017-05-30 01:45:48
● 2020-04-04 17:32:12
○ 2026-02-23 06:55:32
○ 2026-03-22 16:05:10

○NSjm2.alidns.com2020-04-04 → 2020-04-04 · 4 obs

○ 2017-05-30 01:45:48
● 2020-04-04 17:32:12
○ 2026-02-23 06:55:32
○ 2026-03-22 16:05:10

●NSns1.judns.com2026-02-23 → 2026-03-22 · 3 obs

○ 2020-04-04 17:32:12
● 2026-02-23 06:55:32
● 2026-03-22 16:05:10

●NSns1.julydns.com2026-02-23 → 2026-03-22 · 3 obs

○ 2020-04-04 17:32:12
● 2026-02-23 06:55:32
● 2026-03-22 16:05:10

●NSns2.judns.com2026-02-23 → 2026-03-22 · 3 obs

○ 2020-04-04 17:32:12
● 2026-02-23 06:55:32
● 2026-03-22 16:05:10

●NSns2.julydns.com2026-02-23 → 2026-03-22 · 3 obs

○ 2020-04-04 17:32:12
● 2026-02-23 06:55:32
● 2026-03-22 16:05:10

○A127.0.0.12020-04-04 → 2020-04-04 · 4 obs

○ 2017-05-30 01:45:48
● 2020-04-04 17:32:12
○ 2026-02-23 06:55:32
○ 2026-03-22 16:05:10

●A156.247.93.2412026-02-23 → 2026-03-22 · 3 obs

○ 2020-04-04 17:32:12
● 2026-02-23 06:55:32
● 2026-03-22 16:05:10

○A192.225.238.2512017-05-30 → 2017-05-30 · 3 obs

● 2017-05-30 01:45:48
○ 2020-04-04 17:32:12
○ 2026-03-22 16:05:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
nb75.cn	ns1.judns.com, ns2.judns.com	-

✅ Authoritative Response

Server: 162.159.27.251

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for nb75.cn (unsigned zone)

⏱️ Timing

Total: 4321ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`156.247.93.241`
NS	2	`ns1.julydns.com, ns2.julydns.com`
SOA	1	`ns1.julydns.com master.jmdns.com`

Analysis

Hierarchy

nb75.cn is the parent of 5b.nb75.cn.

IP Addresses

nb75.cn resolves to a single IP address: 156.247.93.241.

Other host names such as dawnson.cn, amphioxus.cn and 5b.nb75.cn share IP numbers with nb75.cn.

Name Servers

nb75.cn is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.

nb75.cn at least partially shares name servers with other domains, including whsxb.cn, ydyla.com, adsl-isdn.net, qianqiujia.com and winemail.cn.