core.fail - dns.ninja

`core.fail`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:df8b^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:467f^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.70.127^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.223.139^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`jocelyn.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3aae^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jocelyn.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0ae^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jocelyn.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20ae^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jocelyn.ns.cloudflare.com`
		A	108.162.192.174^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jocelyn.ns.cloudflare.com`
		A	172.64.32.174^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jocelyn.ns.cloudflare.com`
		A	173.245.58.174^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jocelyn.ns.cloudflare.com`
NS	`rudy.ns.cloudflare.com`
		A	2606:4700:58::adf5:3be5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rudy.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1e5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rudy.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21e5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rudy.ns.cloudflare.com`
		A	108.162.193.229^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rudy.ns.cloudflare.com`
		A	172.64.33.229^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rudy.ns.cloudflare.com`
		A	173.245.59.229^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rudy.ns.cloudflare.com`
MX	`alt1.aspmx.l.google.com` ⭐
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com` ⭐
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`aspmx2.googlemail.com`⁽³⁰⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`aspmx3.googlemail.com`⁽³⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
TXT	`google-site-verification=nhwg2q5WqdVkYdN5Vn6dcCvwPM0_k5TrRt-S8ADxBi4`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.70.127, 172.67.223.139
		IPv6 hints	2606:4700:3033::ac43:df8b, 2606:4700:3037::6815:467f
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=197, name=cloudflare-ech.com
SOA	`jocelyn.ns.cloudflare.com`dns@cloudflare.com serial=2407823960

`fail`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.nic.fail` ⭐
	NS	`v0n1.nic.fail`
	NS	`v0n2.nic.fail`
	NS	`v0n3.nic.fail`
	NS	`v2n0.nic.fail`
	NS	`v2n1.nic.fail`
	SOA	`v0n0.nic.fail`hostmaster@donuts.email serial=1783658859

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.org.mx

core.love

core.capital

core.org

core.dk

core.by

core.pt

core.is

core.supplies

core.vote

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.kim

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.clothing

core.limited

core.sh

core.info

core.physio

core.fr

core.dev

core.wiki

core.windows

core.ai

core.coach

core.camera

core.productions

core.co.za

core.ca

core.vn

core.it

core.cz

core.com.hk

core.kz

core.com

core.tv

core.je

core.to

core.dental

core.kr

core.repair

core.pk

core.education

core.mx

core.gr

core.md

core.edu

core.se

core.org.ua

core.builders

core.life

core.energy

core.nl

core.cx

core.dating

core.farm

core.ps

core.ac.uk

core.bet

core.fail

core.exposed

core.pro

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.pm

core.ec

core.golf

core.us

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.red

core.engineering

core.hosting

core.com.ph

core.im

core.kids

core.ee

core.legal

core.photos

core.de

core.com.ec

core.bg

core.app

core.be

core.ie

core.com.pl

Similar names

ocre.mx

creo.com.pl

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

eocr.co.kr

oecr.nl

ecor.com

erco.es

creo.center

erco.ro

ocre.social

oecr.at

rcoe.de

eorc.us

reco.ro

erco.com.mx

cero.cz

reco.net.vn

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

ecor.store

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

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

orce.com.br

cero.nu

reco.email

creo.ru

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

DNS History

16 records (10 active, 6 former)

●NSjocelyn.ns.cloudflare.com2026-02-19 → 2026-07-10 · 2 obs

● 2026-02-19 19:52:42
● 2026-07-10 05:00:46

●NSrudy.ns.cloudflare.com2026-02-19 → 2026-07-10 · 2 obs

● 2026-02-19 19:52:42
● 2026-07-10 05:00:46

●MXalt1.aspmx.l.google.com2026-02-19 → 2026-07-10 · 2 obs

● 2026-02-19 19:52:42
● 2026-07-10 05:00:46

●MXalt2.aspmx.l.google.com2026-02-19 → 2026-07-10 · 2 obs

● 2026-02-19 19:52:42
● 2026-07-10 05:00:46

●MXaspmx2.googlemail.com2026-02-19 → 2026-07-10 · 2 obs

● 2026-02-19 19:52:42
● 2026-07-10 05:00:46

●MXaspmx3.googlemail.com2026-02-19 → 2026-07-10 · 2 obs

● 2026-02-19 19:52:42
● 2026-07-10 05:00:46

●A104.21.70.1272026-03-02 → 2026-07-10 · 10 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
● 2026-06-18 08:39:20
○ 2026-06-19 10:01:52
● 2026-06-27 06:13:00
● 2026-07-10 05:00:46

●A172.67.223.1392026-03-02 → 2026-07-10 · 10 obs

○A188.114.96.02026-02-19 → 2026-06-19 · 10 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
○ 2026-06-18 08:39:20
● 2026-06-19 10:01:52
○ 2026-06-27 06:13:00
○ 2026-07-10 05:00:46

○A188.114.97.02026-02-19 → 2026-06-19 · 10 obs

○A2606:4700:3031::6815:467f2026-03-02 → 2026-06-15 · 9 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
● 2026-06-15 21:20:34
○ 2026-06-18 08:39:20
○ 2026-07-10 05:00:46

●A2606:4700:3033::ac43:df8b2026-06-18 → 2026-07-10 · 5 obs

○ 2026-06-15 21:20:34
● 2026-06-18 08:39:20
○ 2026-06-19 10:01:52
● 2026-06-27 06:13:00
● 2026-07-10 05:00:46

○A2606:4700:3034::ac43:df8b2026-03-02 → 2026-06-15 · 9 obs

●A2606:4700:3037::6815:467f2026-06-18 → 2026-07-10 · 5 obs

○ 2026-06-15 21:20:34
● 2026-06-18 08:39:20
○ 2026-06-19 10:01:52
● 2026-06-27 06:13:00
● 2026-07-10 05:00:46

○A2a06:98c1:3120::2026-02-19 → 2026-06-19 · 10 obs

○A2a06:98c1:3121::2026-02-19 → 2026-06-19 · 10 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
fail	v0n1.nic.fail, v0n2.nic.fail, v2n1.nic.fail, v2n0.nic.fail...	12 records
core.fail	rudy.ns.cloudflare.com, jocelyn.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.174

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for core.fail (unsigned zone)

⏱️ Timing

Total: 808ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.223.139, 104.21.70.127`
AAAA	2	`2606:4700:3033::ac43:df8b, 2606:4700:3037::6815:467f`
NS	2	`jocelyn.ns.cloudflare.com, rudy.ns.cloudflare.com`
MX	4	`alt1.aspmx.l.google.com (pri: 20), alt2.aspmx.l.google.com (pri: 20)...`
TXT	1	`google-site-verification=nhwg2q5WqdVkYdN`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`jocelyn.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v2n1.nic.fail, v2n0.nic.fail, v0n3.nic.fail...)

Analysis

IP Addresses

core.fail resolves to four IP addresses: 104.21.70.127, 172.67.223.139, 2606:4700:3033::ac43:df8b and 2606:4700:3037::6815:467f.

Additional host names — interstellar.xyz, riverglobal.net, www.gumiteszt.com and two others — share IP numbers with core.fail.

Name Servers

DNS delegation for core.fail points to two name servers: jocelyn.ns.cloudflare.com and rudy.ns.cloudflare.com.

core.fail shares its name server setup with other domains, including gotblop.com, cummalot.com, nematix.com and two others.

core.fail has at least partial name server overlap with other domains, such as regend.xyz, desoft.com.cn, mercycorps.com and two others.

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

Host names with 6 IP numbers:

jocelyn.ns.cloudflare.com has IP addresses 108.162.192.174, 172.64.32.174 and 173.245.58.174, plus 3 other.

rudy.ns.cloudflare.com has IP addresses 108.162.193.229, 172.64.33.229 and 173.245.59.229, plus 3 other.

Mail Servers

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

core.fail shares mail servers — at least in part — with other domains, including 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 and two others.

These mail servers are frequently used alongside the mail servers aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com, plus two others.

aspmx2.googlemail.com, aspmx3.googlemail.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com each have two IP addresses. Specifically, aspmx2.googlemail.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1a, aspmx3.googlemail.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1a, alt1.aspmx.l.google.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1a and alt2.aspmx.l.google.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1a.

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

Host names pointing to 108.177.123.27 IP addresses: aspmx2.googlemail.com and alt1.aspmx.l.google.com.

Host names pointing to 2a00:1450:400b:c02::1a IP addresses: aspmx3.googlemail.com and alt2.aspmx.l.google.com.

Host names pointing to 172.253.116.27 IP addresses: aspmx3.googlemail.com and alt2.aspmx.l.google.com.