sourcebook.eu - dns.ninja

sourcebook.eu

DNSSEC⚠️ Not signed
A2606:4700:3035::ac43:90d4🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::6815:3734🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.55.52Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.144.212🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSjean.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a79Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A2803:f800:50::6ca2:c079Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
A2a06:98c1:50::ac40:2079Cloudflare2a06:98c1:50::/45
A108.162.192.121Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A172.64.32.121Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A173.245.58.121Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSnolan.ns.cloudflare.com
A2606:4700:58::a29f:2c38Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A2803:f800:50::6ca2:c338Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
A2a06:98c1:50::ac40:2338Cloudflare2a06:98c1:50::/45
A108.162.195.56Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A162.159.44.56Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A172.64.35.56Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.55.52, 172.67.144.212
IPv6 hints2606:4700:3035::ac43:90d4, 2606:4700:3036::6815:3734
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=201, name=cloudflare-ech.com
SOAjean.ns.cloudflare.comdns@cloudflare.com serial=2405552651

eu

DNSSEC🔒 Signed (DS record present)
NSsi.dns.eu ⭐
NSbe.dns.eu
NSw.dns.eu
NSx.dns.eu
NSy.dns.eu
SOAsi.dns.eutech@eurid.eu serial=1125851081

Same first word

sourcebook.eu
sourcebook.de
sourcebook.net
sourcebook.co
sourcebook.org
sourcebook.info
sourcebook.ca
sourcebook.com
sourcebook.ir
sourcebook.co.uk

Similar names

coursebook.ru
coursebook.co.uk
coursebook.co.ke
booksource.com
booksource.it
kobocourse.com
coursebook.de
booksource.net
booksource.co
booksource.co.uk
coursebook.ai
coursebook.org
coursebook.pl
coursebook.eu
coursebook.com
bookcourse.net
coursebook.net

DNS History

17 records (6 active, 11 former)

20162017201820192020202120222023202420252026NSjean.ns.cloudflare.comnolan.ns.cloudflare.comns.namespace4you.dens2.namespace4you.deMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.commxlb.ispgateway.deA104.21.55.52172.67.144.2122606:4700:3035::ac43:90d42606:4700:3036::6815:3734134.119.16.97172.64.80.12606:4700:130:436c:6f75:6466:6c61:7265
●NSjean.ns.cloudflare.com2026-02-18 → 2026-07-05 · 3 obs
○ 2017-06-10 10:22:58
● 2026-02-18 15:04:46
● 2026-07-05 23:57:10
●NSnolan.ns.cloudflare.com2026-02-18 → 2026-07-05 · 3 obs
○ 2017-06-10 10:22:58
● 2026-02-18 15:04:46
● 2026-07-05 23:57:10
○NSns.namespace4you.de2015-10-11 → 2017-06-10 · 4 obs
● 2015-10-11 18:02:30
● 2017-06-10 10:22:58
○ 2026-02-18 15:04:46
○ 2026-07-05 23:57:10
○NSns2.namespace4you.de2015-10-11 → 2017-06-10 · 4 obs
● 2015-10-11 18:02:30
● 2017-06-10 10:22:58
○ 2026-02-18 15:04:46
○ 2026-07-05 23:57:10
○MXalt1.aspmx.l.google.com2017-06-10 → 2017-06-10 · 4 obs
○ 2016-09-28 06:37:12
● 2017-06-10 10:22:58
○ 2026-02-18 15:04:46
○ 2026-07-05 23:57:10
○MXalt2.aspmx.l.google.com2017-06-10 → 2017-06-10 · 4 obs
○ 2016-09-28 06:37:12
● 2017-06-10 10:22:58
○ 2026-02-18 15:04:46
○ 2026-07-05 23:57:10
○MXalt3.aspmx.l.google.com2017-06-10 → 2017-06-10 · 4 obs
○ 2016-09-28 06:37:12
● 2017-06-10 10:22:58
○ 2026-02-18 15:04:46
○ 2026-07-05 23:57:10
○MXalt4.aspmx.l.google.com2017-06-10 → 2017-06-10 · 4 obs
○ 2016-09-28 06:37:12
● 2017-06-10 10:22:58
○ 2026-02-18 15:04:46
○ 2026-07-05 23:57:10
○MXaspmx.l.google.com2017-06-10 → 2017-06-10 · 4 obs
○ 2016-09-28 06:37:12
● 2017-06-10 10:22:58
○ 2026-02-18 15:04:46
○ 2026-07-05 23:57:10
○MXmxlb.ispgateway.de2015-10-11 → 2016-09-28 · 4 obs
● 2015-10-11 18:02:30
● 2016-09-28 06:37:12
○ 2017-06-10 10:22:58
○ 2026-07-05 23:57:10
●A104.21.55.522026-02-18 → 2026-07-05 · 6 obs
○ 2017-06-10 10:22:58
● 2026-02-18 15:04:46
● 2026-03-06 02:26:12
○ 2026-03-10 16:10:34
● 2026-03-10 17:05:00
● 2026-07-05 23:57:10
○A134.119.16.972015-10-11 → 2017-06-10 · 4 obs
● 2015-10-11 18:02:30
● 2017-06-10 10:22:58
○ 2026-02-18 15:04:46
○ 2026-07-05 23:57:10
○A172.64.80.12026-03-10 → 2026-03-10 · 4 obs
○ 2026-03-06 02:26:12
● 2026-03-10 16:10:34
○ 2026-03-10 17:05:00
○ 2026-07-05 23:57:10
●A172.67.144.2122026-02-18 → 2026-07-05 · 6 obs
○ 2017-06-10 10:22:58
● 2026-02-18 15:04:46
● 2026-03-06 02:26:12
○ 2026-03-10 16:10:34
● 2026-03-10 17:05:00
● 2026-07-05 23:57:10
○A2606:4700:130:436c:6f75:6466:6c61:72652026-03-10 → 2026-03-10 · 4 obs
○ 2026-03-06 02:26:12
● 2026-03-10 16:10:34
○ 2026-03-10 17:05:00
○ 2026-07-05 23:57:10
●A2606:4700:3035::ac43:90d42026-02-18 → 2026-07-05 · 6 obs
○ 2017-06-10 10:22:58
● 2026-02-18 15:04:46
● 2026-03-06 02:26:12
○ 2026-03-10 16:10:34
● 2026-03-10 17:05:00
● 2026-07-05 23:57:10
●A2606:4700:3036::6815:37342026-02-18 → 2026-07-05 · 6 obs
○ 2017-06-10 10:22:58
● 2026-02-18 15:04:46
● 2026-03-06 02:26:12
○ 2026-03-10 16:10:34
● 2026-03-10 17:05:00
● 2026-07-05 23:57:10

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
euw.dns.eu, x.dns.eu, y.dns.eu, be.dns.eu...-
sourcebook.eunolan.ns.cloudflare.com, jean.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.195.56

NS records: nolan.ns.cloudflare.com, jean.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sourcebook.eu (unsigned zone)

⏱️ Timing

Total: 1691ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.55.52, 172.67.144.212
AAAA22606:4700:3036::6815:3734, 2606:4700:3035::ac43:90d4
NS2jean.ns.cloudflare.com, nolan.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1jean.ns.cloudflare.com dns.cloudflare.co

Analysis

IP Addresses

sourcebook.eu has four IP addresses: 104.21.55.52, 172.67.144.212, 2606:4700:3035::ac43:90d4 and 2606:4700:3036::6815:3734.

Among the host names that share IP numbers with sourcebook.eu are bc-clubs.co.uk, doxford.net, nicaraguasurfingrental.com and two others.

Name Servers

sourcebook.eu has two authoritative name servers — jean.ns.cloudflare.com and nolan.ns.cloudflare.com.

sourcebook.eu has the same name server delegation as a number of other domains, such as amigocomputador.com.br, theenhancedmale.com, bordignon.ca and two more.

sourcebook.eu has at least partial name server overlap with other domains, such as bigmatcha.com, myhaloservice.com, bitsens.com and two others.

It is common to see these name servers used together with name servers deb.ns.cloudflare.com and amy.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

jean.ns.cloudflare.com points to 108.162.192.121, 172.64.32.121, 173.245.58.121 and 3 other IP addresses.

nolan.ns.cloudflare.com points to 108.162.195.56, 162.159.44.56, 172.64.35.56 and 3 other IP addresses.