back.cf - dns.ninja

back.cf

DNSSEC⚠️ Not signed
A46.101.151.121🇩🇪 DIGITALOCEAN46.101.128.0/17 DigitalOcean
PTRback.cf
NSns1.digitalocean.com ⭐
A2606:4700:52::ac40:34d2🇺🇸 Cloudflare2606:4700:52::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns1.digitalocean.com
A172.64.52.210🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns1.digitalocean.com
NSns2.digitalocean.com
A2606:4700:5a::ac40:3515🇺🇸 Cloudflare2606:4700:5a::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns2.digitalocean.com
A172.64.53.21🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns2.digitalocean.com
NSns3.digitalocean.com
A2606:4700:52::ac40:31d1🇺🇸 Cloudflare2606:4700:52::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns3.digitalocean.com
A172.64.49.209🇺🇸 Cloudflare172.64.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns3.digitalocean.com
MXmail.back.cf ⭐
A46.101.151.121🇩🇪 DIGITALOCEAN46.101.128.0/17 DigitalOcean
PTRback.cf
TXTv=spf1 mx include:_spf.yahoo.com include:_spf.google.com ~all
SOAns1.digitalocean.comhostmaster@back.cf serial=0

cf

DNSSEC⚠️ Not signed
NSa.ns.cf ⭐
NSb.ns.cf
NSc.ns.cf
NSd.ns.cf
MXmail.intnet.cf ⭐
SOAa.ns.cfkohilaire@socatel.cf serial=1781207248

PTR for

121.151.101.46.in-addr.arpa

Subdomains

mail.back.cf
piwik.back.cf

Same first word

back.eu
back.dk
back.bio
back.nu
back.mx
back.be
back.ch
back.solutions
back.cl
back.im
back.biz
back.cf
back.show
back.pl
back.red
back.money
back.com.cn
back.name
back.in
back.id.vn
back.ist
back.tv
back.pro
back.business
back.lu
back.house
back.co.jp
back.ee
back.cz
back.pt
back.net
back.engineering
back.amsterdam
back.app
back.agency
back.cn
back.vn
back.center
back.co
back.ru
back.nl
back.cash
back.co.id
back.tw
back.es
back.at
back.pub
back.eng.br
back.no
back.events
back.com.ar
back.ax
back.zone
back.schule
back.is
back.ws
back.ly
back.ink
back.to
back.ro
back.fr
back.com
back.by

Similar names

bakc.ru
akbc.org
cabk.net
kcab.org
kbca.com.cn
kbca.us
cbka.net
ckba.cn
akcb.cz
abck.ru
bcka.bc.ca
akcb.pt
abkc.org
ckab.eu
kbac.co.kr
kabc.com
ckab.ru
kabc.kz
ckab.se
cabk.eu
abck.cn
kabc.org
abkc.net
akbc.net.vn
akcb.eu
kbac.org
cakb.com.cn
kcab.or.kr
cabk.es
kbac.nl
bcak.eu
bkac.net
kbca.lt
ckba.com
kcba.cn
bcak.com
akbc.sk
cbak.cn
cabk.de
bkca.in
kcab.com
acbk.ru
cbka.sk
abkc.co
bcak.cz
kabc.jp
bkca.cn
cabk.cn
cabk.ru
cbak.com.cn
kbca.com
cbak.co.uk
kbca.nl
akbc.vn
kbca.ie
ackb.de
akbc.us
kbac.cn
cbak.ru
kbca.ru
kabc.wa.gov.au
kbca.net
cabk.ca
bakc.cn
akbc.ru
abck.nl
kabc.ca
akbc.co.nz
acbk.kz
akbc.com.vn
ackb.nl
kbca.gov.pk
kbac.eu
bcka.net
abkc.org.uk
bakc.net
kabc.com.br

DNS History

5 records (5 active, 0 former)

2020202120222023202420252026NSns1.digitalocean.comns2.digitalocean.comns3.digitalocean.comMXmail.back.cfA46.101.151.121
●NSns1.digitalocean.com2019-12-20 → 2026-06-12 · 2 obs
● 2019-12-20 10:11:24
● 2026-06-12 09:03:04
●NSns2.digitalocean.com2019-12-20 → 2026-06-12 · 2 obs
● 2019-12-20 10:11:24
● 2026-06-12 09:03:04
●NSns3.digitalocean.com2019-12-20 → 2026-06-12 · 2 obs
● 2019-12-20 10:11:24
● 2026-06-12 09:03:04
●MXmail.back.cf2019-12-20 → 2026-06-12 · 2 obs
● 2019-12-20 10:11:24
● 2026-06-12 09:03:04
●A46.101.151.1212019-12-20 → 2026-06-12 · 2 obs
● 2019-12-20 10:11:24
● 2026-06-12 09:03:04

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cfd.ns.cf, b.ns.cf, a.ns.cf, c.ns.cf8 records
back.cfns1.digitalocean.com, ns2.digitalocean.com, ns3.digitalocean.com-

✅ Authoritative Response

Server:172.64.52.210

NS records: ns1.digitalocean.com, ns2.digitalocean.com, ns3.digitalocean.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cf (unsigned zone)

⏱️ Timing

Total: 916ms | Queries: -

📄 Records

TypeCountSample Data
A146.101.151.121
NS3ns3.digitalocean.com, ns2.digitalocean.com...
MX1mail.back.cf (pri: 0)
TXT1v=spf1 mx include:_spf.yahoo.com include
SOA1ns1.digitalocean.com hostmaster.back.cf

📌 Glue Records Collected

Total: 8

In-bailiwick: 8 (d.ns.cf, d.ns.cf, b.ns.cf...)

Analysis

Hierarchy

The parent domain of mail.back.cf and piwik.back.cf is back.cf.

IP Addresses

back.cf directs to one IP number, which is 46.101.151.121.

Additional host names — including mail.back.cf and masspropman.com — share IP numbers with back.cf.

Name Servers

back.cf carries NS records delegating to ns1.digitalocean.com, ns2.digitalocean.com and ns3.digitalocean.com.

back.cf has at least partial name server overlap with other domains, such as 203.199.134.in-addr.arpa, 1.0.0.b.4.4.1.1.0.0.0.0.0.0.0.0.0.d.0.0.3.0.0.0.0.c.0.b.3.0.a.2.ip6.arpa, 1.0.0.6.c.1.0.0.0.0.0.0.0.0.0.0.0.d.0.0.1.0.0.0.0.c.0.b.3.0.a.2.ip6.arpa and two others.

It is common to find these name servers paired with the name servers ns4.digitalocean.com.

ns1.digitalocean.com, ns2.digitalocean.com and ns3.digitalocean.com are three hostnames that each resolve to a pair of IP addresses: ns1.digitalocean.com to 172.64.52.210 and 2606:4700:52::ac40:34d2, ns2.digitalocean.com to 172.64.53.21 and 2606:4700:5a::ac40:3515, and ns3.digitalocean.com to 172.64.49.209 and 2606:4700:52::ac40:31d1.

Mail Servers

back.cf routes its mail through a single mail server, mail.back.cf.

mail.back.cf carries a single IP number, which is 46.101.151.121.