dushubook.com - robtex.com
dushubook.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3036::6815:6c8🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3036::ac43:873d🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.6.200Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.135.61🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | harlee.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::a29f:26ee🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | harlee.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c2ee🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | harlee.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:22ee🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | harlee.ns.cloudflare.com | ||||||
| A | 108.162.194.238🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | harlee.ns.cloudflare.com | ||||||
| A | 162.159.38.238Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | harlee.ns.cloudflare.com | ||||||
| A | 172.64.34.238🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | harlee.ns.cloudflare.com | ||||||
| NS | jason.ns.cloudflare.com | ||||||
| A | 2606:4700:58::adf5:3bb3🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jason.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c1b3🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | jason.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:21b3🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | jason.ns.cloudflare.com | ||||||
| A | 108.162.193.179🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jason.ns.cloudflare.com | ||||||
| A | 172.64.33.179🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jason.ns.cloudflare.com | ||||||
| A | 173.245.59.179🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jason.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 | 104.21.6.200, 172.67.135.61 | ||||||
| IPv6 | 2606:4700:3036::6815:6c8, 2606:4700:3036::ac43:873d | ||||||
| SOA | harlee.ns.cloudflare.comdns@cloudflare.com serial=2399692189 | ||||||
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.netnstld@verisign-grs.com serial=1774575147 | ||||||
Same first word
dushubook.com |
Similar names
DNS History
9 records (6 active, 3 former)
○NSdns10.hichina.com2020-01-07 → 2020-01-07 · 3 obs
○ 2026-03-25 10:34:48
○ 2026-03-27 01:49:36
○NSdns9.hichina.com2020-01-07 → 2020-01-07 · 3 obs
○ 2026-03-25 10:34:48
○ 2026-03-27 01:49:36
●NSharlee.ns.cloudflare.com2026-03-25 → 2026-03-27 · 3 obs
● 2026-03-25 10:34:48
● 2026-03-27 01:49:36
●NSjason.ns.cloudflare.com2026-03-25 → 2026-03-27 · 3 obs
● 2026-03-25 10:34:48
● 2026-03-27 01:49:36
●A104.21.6.2002026-03-25 → 2026-03-27 · 3 obs
● 2026-03-25 10:34:48
● 2026-03-27 01:49:36
●A172.67.135.612026-03-25 → 2026-03-27 · 3 obs
● 2026-03-25 10:34:48
● 2026-03-27 01:49:36
●A2606:4700:3036::6815:6c82026-03-25 → 2026-03-27 · 3 obs
● 2026-03-25 10:34:48
● 2026-03-27 01:49:36
●A2606:4700:3036::ac43:873d2026-03-25 → 2026-03-27 · 3 obs
● 2026-03-25 10:34:48
● 2026-03-27 01:49:36
○A47.104.230.1422020-01-07 → 2020-01-07 · 3 obs
○ 2026-03-25 10:34:48
○ 2026-03-27 01:49:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| dushubook.com | jason.ns.cloudflare.com, harlee.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:173.245.59.179
NS records: jason.ns.cloudflare.com, harlee.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dushubook.com (unsigned zone)
⏱️ Timing
Total: 238ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.135.61, 104.21.6.200 |
| AAAA | 2 | 2606:4700:3036::6815:6c8, 2606:4700:3036::ac43:873d |
| NS | 2 | harlee.ns.cloudflare.com, jason.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | harlee.ns.cloudflare.com dns.cloudflare. |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (jason.ns.cloudflare.com, jason.ns.cloudflare.com, jason.ns.cloudflare.com...)
Analysis
IP Addresses
dushubook.com resolves to four IP numbers: 2606:4700:3036::6815:6c8, 2606:4700:3036::ac43:873d, 104.21.6.200 and 172.67.135.61.
other host names for instance mikescomputers.com, www.woodlandhillsjewelryandpawn.com, xunheshe.com, instag.cloud and nucleo.la share IP numbers with dushubook.com.
Name Servers
dushubook.com is delegated to two name servers: harlee.ns.cloudflare.com and jason.ns.cloudflare.com.
dushubook.com shares the same name server setup as other domains, for example zhuishutxt.com, xshuotxt.net, piaotianbook.com, bookbaotxt.com and linestar.kz.
dushubook.com at least partially shares name servers with other domains, for instance solitex.biz, z7576.cn, cloudfactory.dk, blocktrucks.io and that-cool-hypnosis-show.com.
These name servers are commonly used with the name servers magdalena.ns.cloudflare.com.
Host names with six IP numbers:
harlee.ns.cloudflare.com points to: 2606:4700:50::a29f:26ee, 2803:f800:50::6ca2:c2ee, 2a06:98c1:50::ac40:22ee, 108.162.194.238, 162.159.38.238 and 172.64.34.238; jason.ns.cloudflare.com points to: 2606:4700:58::adf5:3bb3, 2803:f800:50::6ca2:c1b3, 2a06:98c1:50::ac40:21b3, 108.162.193.179, 172.64.33.179 and 173.245.59.179.