`yn-opto.com`

DNSSEC	⚠️ Not signed
NS	`dns1.4cun.com` ⭐
		A	2408:4005:3dc:af00:a6be:339e:a1a0:d2b8^{🇨🇳 Alibaba-Cloud2408:4005::/33}
		A	61.172.183.74^{🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC}
NS	`dns.4cun.com` ⚠️ Not in zone NS records
NS	`dns2.51dns.top` ⚠️ Not in zone NS records
		A	2408:4005:3dc:af00:a6be:339e:a1a0:d2b8^{🇨🇳 Alibaba-Cloud2408:4005::/33}
		A	219.138.102.210^{🇨🇳 CHINATELECOM-HUBEI-YICHANG-IDC219.138.102.0/24 yichang}
SOA	`dns.4cun.com`admin@yn-opto.com serial=1772527490

`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=1785103612

Same first word

yn-opto.com

DNS History

5 records (3 active, 2 former)

●NSdns.4cun.com2015-08-13 → 2026-07-26 · 2 obs

● 2015-08-13 19:39:02
● 2026-07-26 22:17:02

●NSdns1.4cun.com2026-05-17 → 2026-07-26 · 3 obs

○ 2015-08-13 19:39:02
● 2026-05-17 09:38:58
● 2026-07-26 22:17:02

●NSdns2.51dns.top2026-05-17 → 2026-07-26 · 3 obs

○ 2015-08-13 19:39:02
● 2026-05-17 09:38:58
● 2026-07-26 22:17:02

○A218.5.76.452015-08-13 → 2017-02-15 · 4 obs

● 2015-08-13 19:39:02
● 2017-02-15 23:11:40
○ 2019-12-31 08:58:38
○ 2026-07-26 22:17:02

○A222.76.213.472019-12-31 → 2019-12-31 · 4 obs

○ 2017-02-15 23:11:40
● 2019-12-31 08:58:38
○ 2026-05-17 09:38:58
○ 2026-07-26 22:17:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
yn-opto.com	dns1.4cun.com, dns2.51dns.top	2 records

✅ Authoritative Response

Server:219.138.102.210

NS records: dns1.4cun.com, dns2.51dns.top

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for yn-opto.com (unsigned zone)

⏱️ Timing

Total: 1161ms | Queries: -

📄 Records

Type	Count	Sample Data
SOA	1	`dns.4cun.com admin.yn-opto.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (dns1.4cun.com, dns1.4cun.com)

Analysis

Name Servers

yn-opto.com is served by three name servers: dns1.4cun.com, dns.4cun.com and dns2.51dns.top.

yn-opto.com shares at least some of its name servers with other domains, including jxmmf.com, anjle.com, xszg.com and two others.

These name servers are frequently seen alongside dns3.4cun.com, dns4.51dns.top, dns2.4cun.com and 7 other name servers.

dns1.4cun.com and dns2.51dns.top each resolve to two IP addresses: dns1.4cun.com points to 61.172.183.74 and 2408:4005:3dc:af00:a6be:339e:a1a0:d2b8, while dns2.51dns.top points to 219.138.102.210 and 2408:4005:3dc:af00:a6be:339e:a1a0:d2b8.

dns1.4cun.com and dns2.51dns.top each have 2408:4005:3dc:af00:a6be:339e:a1a0:d2b8 IP addresses.

yn-opto.com - robtex.com

yn-opto.com

com