jsboc.com - dns.ninja

`jsboc.com`

DNSSEC	⚠️ Not signed
A	47.254.15.249^{🇺🇸 Alibaba-Cloud47.254.0.0/18 Proxy-registered route object}
NS	`dns3.4cun.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	`dns4.51dns.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}
MX	`mxw.263.net` ⭐
		A	143.110.227.31^{🇺🇸 DIGITALOCEAN143.110.224.0/20 DigitalOcean}
		A	164.92.126.242^{🇺🇸 DIGITALOCEAN164.92.96.0/19 DigitalOcean}
MX	`mx.263.net`⁽¹⁰⁾
		A	38.83.106.84^{🇺🇸 AS6319938.83.106.0/24 CS-34755}
			PTR	`us-mx1.263.net`
		A	38.83.106.85^{🇺🇸 AS6319938.83.106.0/24 CS-34755}
			PTR	`us-mx2.263.net`
		A	143.110.227.31^{🇺🇸 DIGITALOCEAN143.110.224.0/20 DigitalOcean}
		A	164.92.126.242^{🇺🇸 DIGITALOCEAN164.92.96.0/19 DigitalOcean}
TXT	`v=spf1 include:spf.263.net -all`
SOA	`dns.4cun.com`admin@jsboc.com serial=1772527501

`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=1781666085

Same first word

jsboc.com

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DNS History

12 records (6 active, 6 former)

●NSdns.4cun.com2026-02-25 → 2026-06-17 · 3 obs

○ 2016-08-14 11:10:00
● 2026-02-25 21:30:14
● 2026-06-17 03:41:48

○NSdns1.name-services.com2015-11-09 → 2016-04-24 · 4 obs

● 2015-11-09 16:33:44
● 2016-04-24 13:32:16
○ 2016-08-14 11:10:00
○ 2026-06-17 03:41:48

○NSdns2.name-services.com2015-11-09 → 2016-04-24 · 4 obs

● 2015-11-09 16:33:44
● 2016-04-24 13:32:16
○ 2016-08-14 11:10:00
○ 2026-06-17 03:41:48

●NSdns3.4cun.com2026-02-25 → 2026-06-17 · 3 obs

○ 2016-08-14 11:10:00
● 2026-02-25 21:30:14
● 2026-06-17 03:41:48

○NSdns3.name-services.com2015-11-09 → 2016-04-24 · 4 obs

● 2015-11-09 16:33:44
● 2016-04-24 13:32:16
○ 2016-08-14 11:10:00
○ 2026-06-17 03:41:48

●NSdns4.51dns.top2026-02-25 → 2026-06-17 · 3 obs

○ 2016-08-14 11:10:00
● 2026-02-25 21:30:14
● 2026-06-17 03:41:48

○NSdns4.name-services.com2015-11-09 → 2016-04-24 · 4 obs

● 2015-11-09 16:33:44
● 2016-04-24 13:32:16
○ 2016-08-14 11:10:00
○ 2026-06-17 03:41:48

○NSdns5.name-services.com2015-11-09 → 2016-04-24 · 4 obs

● 2015-11-09 16:33:44
● 2016-04-24 13:32:16
○ 2016-08-14 11:10:00
○ 2026-06-17 03:41:48

●MXmx.263.net2026-02-25 → 2026-06-17 · 2 obs

● 2026-02-25 21:30:14
● 2026-06-17 03:41:48

●MXmxw.263.net2026-02-25 → 2026-06-17 · 2 obs

● 2026-02-25 21:30:14
● 2026-06-17 03:41:48

○A127.0.0.12015-11-09 → 2016-04-24 · 4 obs

● 2015-11-09 16:33:44
● 2016-04-24 13:32:16
○ 2016-08-14 11:10:00
○ 2026-06-17 03:41:48

●A47.254.15.2492026-02-25 → 2026-06-17 · 3 obs

○ 2016-08-14 11:10:00
● 2026-02-25 21:30:14
● 2026-06-17 03:41:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
jsboc.com	dns3.4cun.com, dns4.51dns.top	2 records

✅ Authoritative Response

Server:219.138.102.210

NS records: dns3.4cun.com, dns4.51dns.top

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jsboc.com (unsigned zone)

⏱️ Timing

Total: 1988ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`47.254.15.249`
MX	2	`mxw.263.net (pri: 5), mx.263.net (pri: 10)`
TXT	1	`v=spf1 include:spf.263.net -all`
SOA	1	`dns.4cun.com admin.jsboc.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (dns3.4cun.com, dns3.4cun.com)

Analysis

IP Addresses

jsboc.com directs to one IP number, which is 47.254.15.249.

Additional host names — including www.yc-zc.com and yc-zc.com — share IP numbers with jsboc.com.

Name Servers

jsboc.com has three name servers — dns3.4cun.com, dns.4cun.com and dns4.51dns.top.

jsboc.com has at least partial name server overlap with other domains, such as chanchinternational.com, shxikou.cn, lebet.com.cn and two others.

dns7.4cun.com, dns1.4cun.com and dns2.51dns.top — plus 7 other name servers — are commonly paired with these name servers.

dns3.4cun.com directs to 61.172.183.74 and 2408:4005:3dc:af00:a6be:339e:a1a0:d2b8. dns4.51dns.top directs to 219.138.102.210 and 2408:4005:3dc:af00:a6be:339e:a1a0:d2b8. Both hosts share the address 2408:4005:3dc:af00:a6be:339e:a1a0:d2b8.

The host names dns3.4cun.com and dns4.51dns.top both resolve to 2408:4005:3dc:af00:a6be:339e:a1a0:d2b8 IP addresses.

Mail Servers

The MX records for jsboc.com point to two mail servers: mx.263.net and mxw.263.net.

jsboc.com has the same mail server arrangement as a number of other domains, for example 700du.cn, hftmauto.com, toppmach.com and two more.

The mail servers of jsboc.com overlap at least partially with those of other domains, including hzhlbj.com, bjdebo.net and netcn.net.

Hosts pointing to four IP addresses:

mx.263.net has four IP addresses: 38.83.106.84, 38.83.106.85, 143.110.227.31 and 164.92.126.242.

Hosts with two IP numbers each:

mxw.263.net resolves to 143.110.227.31 and 164.92.126.242.

The host names mx.263.net and mxw.263.net both resolve to 143.110.227.31 IP addresses.

The host names mx.263.net and mxw.263.net both resolve to 164.92.126.242 IP addresses.