`dushu520.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:ba67^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:1383^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.19.131^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.186.103^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`jessica.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3aab^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jessica.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0ab^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jessica.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20ab^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jessica.ns.cloudflare.com`
		A	108.162.192.171^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jessica.ns.cloudflare.com`
		A	172.64.32.171^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jessica.ns.cloudflare.com`
		A	173.245.58.171^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jessica.ns.cloudflare.com`
NS	`nash.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bd1^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nash.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1d1^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`nash.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21d1^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`nash.ns.cloudflare.com`
		A	108.162.193.209^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nash.ns.cloudflare.com`
		A	172.64.33.209^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nash.ns.cloudflare.com`
		A	173.245.59.209^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nash.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.19.131, 172.67.186.103
		IPv6 hints	2606:4700:3032::ac43:ba67, 2606:4700:3036::6815:1383
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=46, name=cloudflare-ech.com
SOA	`jessica.ns.cloudflare.com`dns@cloudflare.com serial=2407569571

`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=1784361937

Subdomains

www.dushu520.com

Same first word

dushu520.com

DNS History

20 records (6 active, 14 former)

○NSf1g1ns1.dnspod.net2016-02-25 → 2018-09-11 · 5 obs

○ 2015-07-20 04:59:58
● 2016-02-25 21:58:04
● 2018-09-11 03:10:38
○ 2026-04-07 07:55:38
○ 2026-07-18 08:30:18

○NSf1g1ns2.dnspod.net2016-02-25 → 2018-09-11 · 5 obs

○ 2015-07-20 04:59:58
● 2016-02-25 21:58:04
● 2018-09-11 03:10:38
○ 2026-04-07 07:55:38
○ 2026-07-18 08:30:18

●NSjessica.ns.cloudflare.com2026-04-07 → 2026-07-18 · 3 obs

○ 2018-09-11 03:10:38
● 2026-04-07 07:55:38
● 2026-07-18 08:30:18

●NSnash.ns.cloudflare.com2026-04-07 → 2026-07-18 · 3 obs

○ 2018-09-11 03:10:38
● 2026-04-07 07:55:38
● 2026-07-18 08:30:18

○NSns1.huatutor.com2015-07-20 → 2015-07-20 · 3 obs

● 2015-07-20 04:59:58
○ 2016-02-25 21:58:04
○ 2026-07-18 08:30:18

○NSns2.huatutor.com2015-07-20 → 2015-07-20 · 3 obs

● 2015-07-20 04:59:58
○ 2016-02-25 21:58:04
○ 2026-07-18 08:30:18

○MXmail.dushu520.com2015-07-20 → 2015-07-20 · 3 obs

● 2015-07-20 04:59:58
○ 2016-02-25 21:58:04
○ 2026-07-18 08:30:18

●A104.21.19.1312026-04-07 → 2026-07-18 · 9 obs

○ 2018-09-11 03:10:38
● 2026-04-07 07:55:38
● 2026-04-21 21:31:24
○ 2026-04-21 23:00:50
● 2026-05-05 09:01:06
● 2026-06-09 11:32:54
○ 2026-06-13 16:29:06
● 2026-07-15 00:36:24
● 2026-07-18 08:30:18

●A172.67.186.1032026-04-07 → 2026-07-18 · 9 obs

○A188.114.96.02026-04-21 → 2026-06-13 · 7 obs

○ 2026-04-21 21:31:24
● 2026-04-21 23:00:50
○ 2026-05-05 09:01:06
○ 2026-06-09 11:32:54
● 2026-06-13 16:29:06
○ 2026-07-15 00:36:24
○ 2026-07-18 08:30:18

○A188.114.97.02026-04-21 → 2026-06-13 · 7 obs

○ 2026-04-21 21:31:24
● 2026-04-21 23:00:50
○ 2026-05-05 09:01:06
○ 2026-06-09 11:32:54
● 2026-06-13 16:29:06
○ 2026-07-15 00:36:24
○ 2026-07-18 08:30:18

○A198.57.202.2342015-07-20 → 2015-07-20 · 3 obs

● 2015-07-20 04:59:58
○ 2015-11-22 14:32:40
○ 2026-07-18 08:30:18

○A2606:4700:3030::6815:13832026-04-07 → 2026-06-09 · 8 obs

○ 2018-09-11 03:10:38
● 2026-04-07 07:55:38
● 2026-04-21 21:31:24
○ 2026-04-21 23:00:50
● 2026-05-05 09:01:06
● 2026-06-09 11:32:54
○ 2026-06-13 16:29:06
○ 2026-07-18 08:30:18

●A2606:4700:3032::ac43:ba672026-07-15 → 2026-07-18 · 3 obs

○ 2026-06-13 16:29:06
● 2026-07-15 00:36:24
● 2026-07-18 08:30:18

○A2606:4700:3035::ac43:ba672026-04-07 → 2026-06-09 · 8 obs

○ 2018-09-11 03:10:38
● 2026-04-07 07:55:38
● 2026-04-21 21:31:24
○ 2026-04-21 23:00:50
● 2026-05-05 09:01:06
● 2026-06-09 11:32:54
○ 2026-06-13 16:29:06
○ 2026-07-18 08:30:18

●A2606:4700:3036::6815:13832026-07-15 → 2026-07-18 · 3 obs

○ 2026-06-13 16:29:06
● 2026-07-15 00:36:24
● 2026-07-18 08:30:18

○A2a06:98c1:3120::2026-04-21 → 2026-06-13 · 7 obs

○ 2026-04-21 21:31:24
● 2026-04-21 23:00:50
○ 2026-05-05 09:01:06
○ 2026-06-09 11:32:54
● 2026-06-13 16:29:06
○ 2026-07-15 00:36:24
○ 2026-07-18 08:30:18

○A2a06:98c1:3121::2026-04-21 → 2026-06-13 · 7 obs

○ 2026-04-21 21:31:24
● 2026-04-21 23:00:50
○ 2026-05-05 09:01:06
○ 2026-06-09 11:32:54
● 2026-06-13 16:29:06
○ 2026-07-15 00:36:24
○ 2026-07-18 08:30:18

○A35.200.22.2312018-09-11 → 2018-09-11 · 4 obs

○ 2016-02-25 21:58:04
● 2018-09-11 03:10:38
○ 2026-04-07 07:55:38
○ 2026-07-18 08:30:18

○A74.220.199.62015-11-22 → 2015-11-22 · 4 obs

○ 2015-07-20 04:59:58
● 2015-11-22 14:32:40
○ 2016-02-25 21:58:04
○ 2026-07-18 08:30:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
dushu520.com	nash.ns.cloudflare.com, jessica.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.209

NS records: nash.ns.cloudflare.com, jessica.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dushu520.com (unsigned zone)

⏱️ Timing

Total: 186ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.19.131, 172.67.186.103`
AAAA	2	`2606:4700:3032::ac43:ba67, 2606:4700:3036::6815:1383`
NS	2	`jessica.ns.cloudflare.com, nash.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`jessica.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (nash.ns.cloudflare.com, nash.ns.cloudflare.com, nash.ns.cloudflare.com...)

Analysis

Hierarchy

dushu520.com is a parent domain of www.dushu520.com.

IP Addresses

dushu520.com has four IP addresses: 104.21.19.131, 172.67.186.103, 2606:4700:3032::ac43:ba67 and 2606:4700:3036::6815:1383.

Additional host names — fortboyard.online, www.allspark.com, khzzm.com and two others — share IP numbers with dushu520.com.

Name Servers

dushu520.com is served by two delegated name servers, jessica.ns.cloudflare.com and nash.ns.cloudflare.com.

dushu520.com shares its name server setup with other domains, including huatutor.com, 99sc.cn, casinolab1.pl and two others.

dushu520.com shares at least some of its name servers with other domains, including rtpsoju-11.pages.dev, ryshin.com, longhuawh.com and two others.

These name servers are frequently paired with the name servers meiling.ns.cloudflare.com, donna.ns.cloudflare.com and cash.ns.cloudflare.com.

Host names with 6 IP numbers:

jessica.ns.cloudflare.com carries IP addresses 108.162.192.171, 172.64.32.171 and 173.245.58.171, with 3 other addresses beyond those.

nash.ns.cloudflare.com carries IP addresses 108.162.193.209, 172.64.33.209 and 173.245.59.209, with 3 other addresses beyond those.

dushu520.com - robtex.com

dushu520.com

com

Subdomains

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

`dushu520.com`

`com`