core.fail - robtex.com

core.fail

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:467f🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::ac43:df8b🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.70.127Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.223.139🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSjocelyn.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3aae🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjocelyn.ns.cloudflare.com
A2803:f800:50::6ca2:c0ae🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRjocelyn.ns.cloudflare.com
A2a06:98c1:50::ac40:20ae🇺🇸 Cloudflare2a06:98c1:50::/45
PTRjocelyn.ns.cloudflare.com
A108.162.192.174🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjocelyn.ns.cloudflare.com
A172.64.32.174🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjocelyn.ns.cloudflare.com
A173.245.58.174🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjocelyn.ns.cloudflare.com
NSrudy.ns.cloudflare.com
A2606:4700:58::adf5:3be5🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrudy.ns.cloudflare.com
A2803:f800:50::6ca2:c1e5🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRrudy.ns.cloudflare.com
A2a06:98c1:50::ac40:21e5🇺🇸 Cloudflare2a06:98c1:50::/45
PTRrudy.ns.cloudflare.com
A108.162.193.229🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrudy.ns.cloudflare.com
A172.64.33.229🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrudy.ns.cloudflare.com
A173.245.59.229🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrudy.ns.cloudflare.com
MXalt1.aspmx.l.google.com ⭐
A2800:3f0:4003:c0f::1b🇨🇱 Google2800:3f0:4003::/48
A108.177.123.26🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f26.1e100.net
MXalt2.aspmx.l.google.com ⭐
A2a00:1450:400b:c02::1b🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f27.1e100.net
A172.253.116.26🇺🇸 Google172.253.116.0/24
PTRdj-in-f26.1e100.net
MXaspmx2.googlemail.com(30)
A2800:3f0:4003:c0f::1b🇨🇱 Google2800:3f0:4003::/48
A108.177.123.26🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f26.1e100.net
MXaspmx3.googlemail.com(30)
A2a00:1450:400b:c02::1a🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f26.1e100.net
A172.253.116.27🇺🇸 Google172.253.116.0/24
PTRdj-in-f27.1e100.net
TXTgoogle-site-verification=nhwg2q5WqdVkYdN5Vn6dcCvwPM0_k5TrRt-S8ADxBi4
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.70.127, 172.67.223.139
IPv6 hints2606:4700:3031::6815:467f, 2606:4700:3034::ac43:df8b
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=249, name=cloudflare-ech.com
SOAjocelyn.ns.cloudflare.comdns@cloudflare.com serial=2402246002

fail

DNSSEC🔒 Signed (DS record present)
NSv0n0.nic.fail ⭐
NSv0n1.nic.fail
NSv0n2.nic.fail
NSv0n3.nic.fail
NSv2n0.nic.fail
NSv2n1.nic.fail
SOAv0n0.nic.failhostmaster@donuts.email serial=1776986342

Same first word

core.today
core.chat
core.ac
core.care
core.net.id
core.ms
core.direct
core.pp.ua
core.ac.jp
core.guru
core.world
core.love
core.capital
core.org
core.dk
core.pt
core.is
core.supplies
core.pw
core.xii.jp
core.gallery
core.io
core.fi
core.eu
core.co.at
core.vc
core.ly
core.academy
core.lv
core.business
core.tg
core.com.ua
core.toys
core.microsoft
core.insure
core.nic.in
core.gen.tr
core.org.pt
core.com.sg
core.city
core.sk
core.at
core.coop
core.moe
core.co.th
core.org.cn
core.org.br
core.us-west-2.elasticbeanstalk.com
core.me
core.su
core.co.nz
core.ba
core.ro
core.sa
core.co.uk
core.icu
core.li
core.blue
core.co.jp
core.tf
core.dns-cloud.net
core.cards
core.bot
core.cloudapp.net
core.s3.amazonaws.com
core.limited
core.sh
core.info
core.dev
core.wiki
core.windows
core.ai
core.coach
core.camera
core.co.za
core.ca
core.vn
core.it
core.cz
core.com.hk
core.kz
core.com
core.tv
core.dental
core.repair
core.education
core.mx
core.gr
core.md
core.edu
core.se
core.org.ua
core.life
core.energy
core.nl
core.cx
core.dating
core.farm
core.ps
core.ac.uk
core.bet
core.fail
core.exposed
core.healthcare
core.pl
core.or.kr
core.com.tr
core.ru
core.hu
core.fund
core.ws
core.mba
core.in
core.network
core.la
core.cw
core.cloud
core.co
core.co.in
core.com.mx
core.tips
core.pm
core.ec
core.golf
core.us
core.equipment
core.uk.com
core.edu.au
core.technology
core.redirectme.net
core.net
core.bz
core.my
core.host
core.fm
core.ch
core.tech
core.gs
core.red
core.engineering
core.hosting
core.com.ph
core.im
core.kids
core.ee
core.photos
core.de
core.com.ec
core.bg
core.app
core.be
core.ie
core.com.pl

Similar names

ocre.mx
ecor.org
oerc.org.uk
creo.hu
oecr.de
erco.eu
creo.dk
reco.nl
reco.it
ecro.ca
cero.capital
oerc.com
ecor.fr
roec.cn
creo.se
ceor.bplaced.net
orec.ca
erco.us
orce.de
cero.bio
creo.archi
creo.fi
reco.co.at
cero.com.pl
creo.rzeszow.pl
ecor.jp
roce.com
reco.de
oecr.nl
ecor.com
erco.es
erco.ro
ocre.social
oecr.at
rcoe.de
eorc.us
reco.ro
erco.com.mx
cero.cz
cero.world
reco.on.ca
erco.org
erco.de
reoc.us
creo.be
roec.com
ecro.edu.mx
erco.be
ecor.cz
reco.mi.it
creo.pro
ocer.net
reco.guru
oerc.net
reco.co.th
ecro.fr
eocr.cn
cero.it
reco.be
erco.se
ocre.de
eocr.com
creo.com.tr
creo.online
reco.info
ecor.net
creo.ch
oerc.at
reco.ma
oecr.net
reco.sk
ecro.net
cero.gr.jp
rcoe.ru
ecor.ch
coer.net
erco.pl
reco.fi
reco.pl
erco.cz
reco.com.mx
creo.co
roce.it
orce.ie
creo.host
coer.de
orce.nl
ecro.de
reco.tw
erco.si
cero.bike
coer.nl
erco.online
rcoe.info
rcoe.tv
reco.co.za
erco.cn
croe.ru
roce.org
creo.net
reoc.org
erco.co.kr
creo.kr
reco.pt
ocre.be
ocre.net
cero.nu
reco.email
creo.ru
ocre.com.cn
ecor.io
reco.us
reco.me
reco.com
ceor.net
reco.co.nz
creo.com.na
roce.com.mx
eroc.cz
erco.com.qa
rcoe.us
cero.ca
cero.software
ocre.info
coer.eu
erco.co.uk
erco.com.br
orec.nl
ecor.ca
creo.biz
erco.ovh
creo.chat
eocr.eu
creo.com
ocre.org
cero.de
roce.co.jp
ecor.info
creo.us

DNS History

14 records (10 active, 4 former)

NSjocelyn.ns.cloudflare.comrudy.ns.cloudflare.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comA104.21.70.127172.67.223.1392606:4700:3031::6815:467f2606:4700:3034::ac43:df8b188.114.96.0188.114.97.02a06:98c1:3120::2a06:98c1:3121::
●NSjocelyn.ns.cloudflare.com2026-02-19 → 2026-04-23 · 2 obs
● 2026-02-19 19:52:42
● 2026-04-23 23:26:34
●NSrudy.ns.cloudflare.com2026-02-19 → 2026-04-23 · 2 obs
● 2026-02-19 19:52:42
● 2026-04-23 23:26:34
●MXalt1.aspmx.l.google.com2026-02-19 → 2026-04-23 · 2 obs
● 2026-02-19 19:52:42
● 2026-04-23 23:26:34
●MXalt2.aspmx.l.google.com2026-02-19 → 2026-04-23 · 2 obs
● 2026-02-19 19:52:42
● 2026-04-23 23:26:34
●MXaspmx2.googlemail.com2026-02-19 → 2026-04-23 · 2 obs
● 2026-02-19 19:52:42
● 2026-04-23 23:26:34
●MXaspmx3.googlemail.com2026-02-19 → 2026-04-23 · 2 obs
● 2026-02-19 19:52:42
● 2026-04-23 23:26:34
●A104.21.70.1272026-03-02 → 2026-04-23 · 7 obs
○ 2026-02-19 19:52:42
○ 2026-02-20 15:22:56
● 2026-03-02 22:45:24
● 2026-04-07 14:27:48
○ 2026-04-08 00:36:56
● 2026-04-12 14:24:38
● 2026-04-23 23:26:34
●A172.67.223.1392026-03-02 → 2026-04-23 · 7 obs
○ 2026-02-19 19:52:42
○ 2026-02-20 15:22:56
● 2026-03-02 22:45:24
● 2026-04-07 14:27:48
○ 2026-04-08 00:36:56
● 2026-04-12 14:24:38
● 2026-04-23 23:26:34
○A188.114.96.02026-02-19 → 2026-04-08 · 7 obs
● 2026-02-19 19:52:42
● 2026-02-20 15:22:56
○ 2026-03-02 22:45:24
○ 2026-04-07 14:27:48
● 2026-04-08 00:36:56
○ 2026-04-12 14:24:38
○ 2026-04-23 23:26:34
○A188.114.97.02026-02-19 → 2026-04-08 · 7 obs
● 2026-02-19 19:52:42
● 2026-02-20 15:22:56
○ 2026-03-02 22:45:24
○ 2026-04-07 14:27:48
● 2026-04-08 00:36:56
○ 2026-04-12 14:24:38
○ 2026-04-23 23:26:34
●A2606:4700:3031::6815:467f2026-03-02 → 2026-04-23 · 7 obs
○ 2026-02-19 19:52:42
○ 2026-02-20 15:22:56
● 2026-03-02 22:45:24
● 2026-04-07 14:27:48
○ 2026-04-08 00:36:56
● 2026-04-12 14:24:38
● 2026-04-23 23:26:34
●A2606:4700:3034::ac43:df8b2026-03-02 → 2026-04-23 · 7 obs
○ 2026-02-19 19:52:42
○ 2026-02-20 15:22:56
● 2026-03-02 22:45:24
● 2026-04-07 14:27:48
○ 2026-04-08 00:36:56
● 2026-04-12 14:24:38
● 2026-04-23 23:26:34
○A2a06:98c1:3120::2026-02-19 → 2026-04-08 · 7 obs
● 2026-02-19 19:52:42
● 2026-02-20 15:22:56
○ 2026-03-02 22:45:24
○ 2026-04-07 14:27:48
● 2026-04-08 00:36:56
○ 2026-04-12 14:24:38
○ 2026-04-23 23:26:34
○A2a06:98c1:3121::2026-02-19 → 2026-04-08 · 7 obs
● 2026-02-19 19:52:42
● 2026-02-20 15:22:56
○ 2026-03-02 22:45:24
○ 2026-04-07 14:27:48
● 2026-04-08 00:36:56
○ 2026-04-12 14:24:38
○ 2026-04-23 23:26:34

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
failv0n0.nic.fail, v0n1.nic.fail, v0n2.nic.fail, v0n3.nic.fail...12 records
core.failjocelyn.ns.cloudflare.com, rudy.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.59.229

NS records: jocelyn.ns.cloudflare.com, rudy.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for core.fail (unsigned zone)

⏱️ Timing

Total: 515ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.223.139, 104.21.70.127
AAAA22606:4700:3034::ac43:df8b, 2606:4700:3031::6815:467f
NS2jocelyn.ns.cloudflare.com, rudy.ns.cloudflare.com
MX4alt1.aspmx.l.google.com (pri: 20), alt2.aspmx.l.google.com (pri: 20)...
TXT1google-site-verification=nhwg2q5WqdVkYdN
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1jocelyn.ns.cloudflare.com dns.cloudflare

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v0n0.nic.fail, v0n1.nic.fail, v0n2.nic.fail...)

Analysis

IP Addresses

core.fail maps to four IP numbers: 2606:4700:3031::6815:467f, 2606:4700:3034::ac43:df8b, 104.21.70.127 and 172.67.223.139.

Other host names, for instance riverglobal.net, www.gumiteszt.com, open88-vn1.com, uavto.vn.ua and sosortho.com share IP numbers with core.fail.

Name Servers

Two name servers jocelyn.ns.cloudflare.com and rudy.ns.cloudflare.com handle delegation for core.fail.

core.fail uses the same name server setup as other domains, for example gotblop.com, cummalot.com, orhidix.com, habilitaciondeoficinas.cl and topcamlists.com.

core.fail partially shares name servers with other domains; examples include regend.xyz, desoft.com.cn, mercycorps.com, attractiontix.co.uk and britainconnected.network.

These name servers are often used with the name servers trey.ns.cloudflare.com and marty.ns.cloudflare.com.

Host names with six IP numbers: jocelyn.ns.cloudflare.com points to: 2606:4700:50::adf5:3aae, 2803:f800:50::6ca2:c0ae, 2a06:98c1:50::ac40:20ae, 108.162.192.174, 172.64.32.174 and 173.245.58.174; rudy.ns.cloudflare.com points to: 2606:4700:58::adf5:3be5, 2803:f800:50::6ca2:c1e5, 2a06:98c1:50::ac40:21e5, 108.162.193.229, 172.64.33.229 and 173.245.59.229.

Mail Servers

core.fail is handled by four mail servers: aspmx2.googlemail.com, aspmx3.googlemail.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.

core.fail shares some mail servers with other domains, at least partially, such as ns500731.ns500731.ns500754.ns500742.ns500731.ns500742.ns500731.ns500705.ns500704.ns500291.ns500671.ns500666.ns500153.tenderladiesbz.com, ns500765.ns500693.ns500699.ns500699.ns500734.ns500693.ns500693.ns500693.ns500588.ns500588.ns500588.ns500588.ns500612.ns500588.ns500578.ns500110.dtrkdll.com, todayinsure.com, ns500698.ns500759.ns500759.ns500758.ns500758.ns500736.ns500698.ns500735.ns500708.ns500708.ns500708.ns500698.ns500652.trackreceptor.com and reisetopia.de.

these mail servers are commonly used with aspmx.l.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx4.googlemail.com and aspmx5.googlemail.com.

Host names with two IPs:

aspmx2.googlemail.com points to 2800:3f0:4003:c0f::1b and 108.177.123.26.

aspmx3.googlemail.com points to 2a00:1450:400b:c02::1a and 172.253.116.27.

alt1.aspmx.l.google.com points to 2800:3f0:4003:c0f::1b and 108.177.123.26.

alt2.aspmx.l.google.com points to 2a00:1450:400b:c02::1b and 172.253.116.26.

Host names pointing to 2800:3f0:4003:c0f::1b: aspmx2.googlemail.com and alt1.aspmx.l.google.com.

Host names pointing to 108.177.123.26: aspmx2.googlemail.com and alt1.aspmx.l.google.com.