downbook.org - robtex.com
downbook.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::ac43:b71f🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::6815:12ba🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.18.186Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.183.31🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | nova.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::a29f:2681🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nova.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c281🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | nova.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2281🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | nova.ns.cloudflare.com | ||||||
| A | 108.162.194.129🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nova.ns.cloudflare.com | ||||||
| A | 162.159.38.129Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nova.ns.cloudflare.com | ||||||
| A | 172.64.34.129🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nova.ns.cloudflare.com | ||||||
| NS | rommy.ns.cloudflare.com | ||||||
| A | 2606:4700:58::a29f:2c14🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rommy.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c314🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | rommy.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2314🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | rommy.ns.cloudflare.com | ||||||
| A | 108.162.195.20🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rommy.ns.cloudflare.com | ||||||
| A | 162.159.44.20Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rommy.ns.cloudflare.com | ||||||
| A | 172.64.35.20🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rommy.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.18.186, 172.67.183.31 | ||||||
| IPv6 hints | 2606:4700:3031::ac43:b71f, 2606:4700:3037::6815:12ba | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=40, name=cloudflare-ech.com | ||||||
| SOA | nova.ns.cloudflare.comdns@cloudflare.com serial=2403238371 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1778810013 | ||||||
Same first word
Similar names
bookdown.com |
woodknob.cn |
bookdown.io |
bookdown.net |
bookdown.info |
bookdown.de |
bookdown.com.cn |
bookdown.org |
bookdown.cc |
DNS History
19 records (6 active, 13 former)
●NSnova.ns.cloudflare.com2026-02-15 → 2026-05-15 · 3 obs
○ 2015-12-20 14:24:46
● 2026-02-15 18:46:10
● 2026-05-15 02:27:54
● 2026-02-15 18:46:10
● 2026-05-15 02:27:54
○NSns1.locaweb.com.br2015-05-18 → 2015-10-12 · 4 obs
● 2015-05-18 14:30:40
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
○NSns2.locaweb.com.br2015-05-18 → 2015-10-12 · 4 obs
● 2015-05-18 14:30:40
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
○NSns3.locaweb.com.br2015-05-18 → 2015-10-12 · 4 obs
● 2015-05-18 14:30:40
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
●NSrommy.ns.cloudflare.com2026-02-15 → 2026-05-15 · 3 obs
○ 2015-12-20 14:24:46
● 2026-02-15 18:46:10
● 2026-05-15 02:27:54
● 2026-02-15 18:46:10
● 2026-05-15 02:27:54
○MXmx.a.locaweb.com.br2015-05-18 → 2015-10-12 · 4 obs
● 2015-05-18 14:30:40
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
○MXmx.b.locaweb.com.br2015-05-18 → 2015-10-12 · 4 obs
● 2015-05-18 14:30:40
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
○MXmx.core.locaweb.com.br2015-05-18 → 2015-10-12 · 4 obs
● 2015-05-18 14:30:40
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
○MXmx.jk.locaweb.com.br2015-05-18 → 2015-10-12 · 4 obs
● 2015-05-18 14:30:40
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
●A104.21.18.1862026-02-15 → 2026-05-15 · 6 obs
○ 2015-12-20 14:24:46
● 2026-02-15 18:46:10
● 2026-04-11 20:18:26
○ 2026-04-28 17:16:16
● 2026-04-28 21:46:16
● 2026-05-15 02:27:54
● 2026-02-15 18:46:10
● 2026-04-11 20:18:26
○ 2026-04-28 17:16:16
● 2026-04-28 21:46:16
● 2026-05-15 02:27:54
●A172.67.183.312026-02-15 → 2026-05-15 · 6 obs
○ 2015-12-20 14:24:46
● 2026-02-15 18:46:10
● 2026-04-11 20:18:26
○ 2026-04-28 17:16:16
● 2026-04-28 21:46:16
● 2026-05-15 02:27:54
● 2026-02-15 18:46:10
● 2026-04-11 20:18:26
○ 2026-04-28 17:16:16
● 2026-04-28 21:46:16
● 2026-05-15 02:27:54
○A188.114.96.02026-04-28 → 2026-04-28 · 4 obs
○ 2026-04-11 20:18:26
● 2026-04-28 17:16:16
○ 2026-04-28 21:46:16
○ 2026-05-15 02:27:54
● 2026-04-28 17:16:16
○ 2026-04-28 21:46:16
○ 2026-05-15 02:27:54
○A188.114.97.02026-04-28 → 2026-04-28 · 4 obs
○ 2026-04-11 20:18:26
● 2026-04-28 17:16:16
○ 2026-04-28 21:46:16
○ 2026-05-15 02:27:54
● 2026-04-28 17:16:16
○ 2026-04-28 21:46:16
○ 2026-05-15 02:27:54
○A191.252.44.292015-10-12 → 2015-10-12 · 4 obs
○ 2015-05-18 14:30:40
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
● 2015-10-12 08:15:28
○ 2015-12-20 14:24:46
○ 2026-05-15 02:27:54
○A200.234.196.1982015-05-18 → 2015-05-18 · 3 obs
● 2015-05-18 14:30:40
○ 2015-10-12 08:15:28
○ 2026-05-15 02:27:54
○ 2015-10-12 08:15:28
○ 2026-05-15 02:27:54
●A2606:4700:3031::ac43:b71f2026-02-15 → 2026-05-15 · 6 obs
○ 2015-12-20 14:24:46
● 2026-02-15 18:46:10
● 2026-04-11 20:18:26
○ 2026-04-28 17:16:16
● 2026-04-28 21:46:16
● 2026-05-15 02:27:54
● 2026-02-15 18:46:10
● 2026-04-11 20:18:26
○ 2026-04-28 17:16:16
● 2026-04-28 21:46:16
● 2026-05-15 02:27:54
●A2606:4700:3037::6815:12ba2026-02-15 → 2026-05-15 · 6 obs
○ 2015-12-20 14:24:46
● 2026-02-15 18:46:10
● 2026-04-11 20:18:26
○ 2026-04-28 17:16:16
● 2026-04-28 21:46:16
● 2026-05-15 02:27:54
● 2026-02-15 18:46:10
● 2026-04-11 20:18:26
○ 2026-04-28 17:16:16
● 2026-04-28 21:46:16
● 2026-05-15 02:27:54
○A2a06:98c1:3120::2026-04-28 → 2026-04-28 · 4 obs
○ 2026-04-11 20:18:26
● 2026-04-28 17:16:16
○ 2026-04-28 21:46:16
○ 2026-05-15 02:27:54
● 2026-04-28 17:16:16
○ 2026-04-28 21:46:16
○ 2026-05-15 02:27:54
○A2a06:98c1:3121::2026-04-28 → 2026-04-28 · 4 obs
○ 2026-04-11 20:18:26
● 2026-04-28 17:16:16
○ 2026-04-28 21:46:16
○ 2026-05-15 02:27:54
● 2026-04-28 17:16:16
○ 2026-04-28 21:46:16
○ 2026-05-15 02:27:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org | - |
| downbook.org | rommy.ns.cloudflare.com, nova.ns.cloudflare.com | - |
✅ Authoritative Response
Server:162.159.44.20
NS records: rommy.ns.cloudflare.com, nova.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for downbook.org (unsigned zone)
⏱️ Timing
Total: 898ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.183.31, 104.21.18.186 |
| AAAA | 2 | 2606:4700:3037::6815:12ba, 2606:4700:3031::ac43:b71f |
| NS | 2 | nova.ns.cloudflare.com, rommy.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | nova.ns.cloudflare.com dns.cloudflare.co |
Analysis
IP Addresses
downbook.org points to four IP numbers: 2606:4700:3031::ac43:b71f, 2606:4700:3037::6815:12ba, 104.21.18.186 and 172.67.183.31.
Other host names, for instance sunblospeed.com, th.taotu.org, www.fmi-app.info, getroids1.net and vidflow.co share IP numbers with downbook.org.
Name Servers
Delegation for downbook.org rests with two name servers, nova.ns.cloudflare.com and rommy.ns.cloudflare.com.
downbook.org shares the same name server setup as other domains, including zhazhijiav101.top, 3y4xsdc.mom, 959wyt.com, juman.cc and xrznsph.com.
downbook.org at least partially shares name servers with other domains, for instance hsjyc.net, dermame.com, (0x736578)xtubes.com, elpasospecialtyhospital.com and heimabs.com.
These name servers are commonly used with rudy.ns.cloudflare.com and arushi.ns.cloudflare.com.
Host names with six IP numbers: nova.ns.cloudflare.com points to: 2606:4700:50::a29f:2681, 2803:f800:50::6ca2:c281, 2a06:98c1:50::ac40:2281, 108.162.194.129, 162.159.38.129 and 172.64.34.129. rommy.ns.cloudflare.com points to: 2606:4700:58::a29f:2c14, 2803:f800:50::6ca2:c314, 2a06:98c1:50::ac40:2314, 108.162.195.20, 162.159.44.20 and 172.64.35.20.