ciscobooks.cn - robtex.com
ciscobooks.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::ac43:d5a5🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3033::6815:17d1🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.23.209Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.213.165🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | laura.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::adf5:3ab7🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | laura.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c0b7🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | laura.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:20b7🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | laura.ns.cloudflare.com | ||||||
| A | 108.162.192.183🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | laura.ns.cloudflare.com | ||||||
| A | 172.64.32.183🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | laura.ns.cloudflare.com | ||||||
| A | 173.245.58.183🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | laura.ns.cloudflare.com | ||||||
| NS | mike.ns.cloudflare.com | ||||||
| A | 2606:4700:58::a29f:2c3f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | mike.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c33f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | mike.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:233f🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | mike.ns.cloudflare.com | ||||||
| A | 108.162.195.63🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | mike.ns.cloudflare.com | ||||||
| A | 162.159.44.63Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | mike.ns.cloudflare.com | ||||||
| A | 172.64.35.63🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | mike.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.23.209, 172.67.213.165 | ||||||
| IPv6 hints | 2606:4700:3030::ac43:d5a5, 2606:4700:3033::6815:17d1 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=37, name=cloudflare-ech.com | ||||||
| SOA | laura.ns.cloudflare.comdns@cloudflare.com serial=2398005591 | ||||||
cn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| 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.cnroot@cnnic.cn serial=2034666589 | ||||||
Subdomains
www.ciscobooks.cn |
Same first word
ciscobooks.cn |
DNS History
8 records (6 active, 2 former)
●NSlaura.ns.cloudflare.com2026-03-16 → 2026-04-13 · 3 obs
● 2026-03-16 19:54:26
● 2026-04-13 15:36:56
●NSmike.ns.cloudflare.com2026-03-16 → 2026-04-13 · 3 obs
● 2026-03-16 19:54:26
● 2026-04-13 15:36:56
○NSns1.nowcndns.com2026-03-01 → 2026-03-01 · 3 obs
○ 2026-03-16 19:54:26
○ 2026-04-13 15:36:56
○NSns2.nowcndns.com2026-03-01 → 2026-03-01 · 3 obs
○ 2026-03-16 19:54:26
○ 2026-04-13 15:36:56
●A104.21.23.2092026-03-16 → 2026-04-13 · 2 obs
● 2026-04-13 15:36:56
●A172.67.213.1652026-03-16 → 2026-04-13 · 2 obs
● 2026-04-13 15:36:56
●A2606:4700:3030::ac43:d5a52026-03-16 → 2026-04-13 · 2 obs
● 2026-04-13 15:36:56
●A2606:4700:3033::6815:17d12026-03-16 → 2026-04-13 · 2 obs
● 2026-04-13 15:36:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| ciscobooks.cn | mike.ns.cloudflare.com, laura.ns.cloudflare.com | - |
✅ Authoritative Response
Server:162.159.44.63
NS records: mike.ns.cloudflare.com, laura.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ciscobooks.cn (unsigned zone)
⏱️ Timing
Total: 879ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.213.165, 104.21.23.209 |
| AAAA | 2 | 2606:4700:3033::6815:17d1, 2606:4700:3030::ac43:d5a5 |
| NS | 2 | laura.ns.cloudflare.com, mike.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | laura.ns.cloudflare.com dns.cloudflare.c |
Analysis
Hierarchy
The parent of www.ciscobooks.cn is ciscobooks.cn.
IP Addresses
ciscobooks.cn maps to four IP numbers: 2606:4700:3030::ac43:d5a5, 2606:4700:3033::6815:17d1, 104.21.23.209 and 172.67.213.165.
Other host names, for instance gtdzgs.com, www.sumarauto.com, parkinsonsresearch.fund, yishanhuanbao.com and trusthouseservices.com share IP numbers with ciscobooks.cn.
Name Servers
Two name servers laura.ns.cloudflare.com and mike.ns.cloudflare.com handle delegation for ciscobooks.cn.
ciscobooks.cn uses the same name server setup as other domains, for example k8nmm.cn, luxili.cn, tijiaog.cn, topwinsafety.cn and zhsecurity.cn.
ciscobooks.cn partially shares name servers with other domains; examples include f25e5.com, hdrn.nu, eyeballmonitor.com, ecox.fr and palamidas.gr.
These name servers are commonly used with the name servers treasure.ns.cloudflare.com, augustus.ns.cloudflare.com, macy.ns.cloudflare.com, carter.ns.cloudflare.com and rodney.ns.cloudflare.com.
Host names with six IP numbers: laura.ns.cloudflare.com points to: 2606:4700:50::adf5:3ab7, 2803:f800:50::6ca2:c0b7, 2a06:98c1:50::ac40:20b7, 108.162.192.183, 172.64.32.183 and 173.245.58.183; mike.ns.cloudflare.com points to: 2606:4700:58::a29f:2c3f, 2803:f800:50::6ca2:c33f, 2a06:98c1:50::ac40:233f, 108.162.195.63, 162.159.44.63 and 172.64.35.63.