`core.tf`

DNSSEC	⚠️ Not signed
NS	`lisa.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a83^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c083^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lisa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2083^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lisa.ns.cloudflare.com`
		A	108.162.192.131^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
		A	172.64.32.131^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
		A	173.245.58.131^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
NS	`norm.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b86^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`norm.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c186^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`norm.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2186^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`norm.ns.cloudflare.com`
		A	108.162.193.134^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`norm.ns.cloudflare.com`
		A	172.64.33.134^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`norm.ns.cloudflare.com`
		A	173.245.59.134^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`norm.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c09::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bh-in-f27.1e100.net`
		A	142.251.163.27^{🇺🇸 Google142.251.163.0/24}
			PTR	`wv-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:3003::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yulnkjt-in-f27.1e100.net`
		A	172.253.145.27^{🇺🇸 Google172.253.145.0/24}
			PTR	`yulnkjt-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4025:c01::1b^{🇵🇱 Google2a00:1450:4025::/48}
			PTR	`rd-in-f27.1e100.net`
		A	142.250.147.26^{🇺🇸 Google142.250.147.0/24}
			PTR	`rd-in-f26.1e100.net`
TXT	`google-site-verification=M6_-Dg60mriirIFZzdxmw8tH80l0oYGX-uI3nzbHLAY`
TXT	`v=spf1 +a:core.tf +ip4:78.140.196.142 +ip4:139.45.200.54 include:_spf.google....`
SOA	`lisa.ns.cloudflare.com`dns@cloudflare.com serial=2404607494

`tf`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.nic.fr` ⭐
	NS	`d.nic.fr`
	NS	`f.ext.nic.fr`
	NS	`g.ext.nic.fr`
	TXT	`No RRs processed [30/05/2026 16H20:22]`
	SOA	`a.nic.fr`dnsmaster@afnic.fr serial=2222575117

📈 Tranco rank: #152,215

Subdomains

scruffy.core.tf

api.core.tf

Same first word

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.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.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.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

core.today

core.chat

core.ac

core.care

core.net.id

core.direct

core.pp.ua

core.ac.jp

core.guru

core.world

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

Similar names

creo.uk

reco.co.jp

creo.pt

reco.my

ocre.jp

croe.org

reco.com.ua

eorc.ae

cero.dev

cero.sk

rcoe.net

oerc.org

rceo.org

reco.eu

creo.store

creo.nl

erco.sk

eorc.co.uk

orec.info

rcoe.mobi

reco.systems

rcoe.es

eorc.com.mt

reco.mx

creo.fr

ecro.online

reco.kr

reco.com.br

core.eu

creo.vn

erco.site

core.co.at

rcoe.org

orec.fr

cero.in

core.vc

cero.io

orec.ru

reco.ai

ecro.us

creo.pe

core.ly

reco.as

cero.no

creo.no

core.academy

erco.co.il

erco.com.pe

core.lv

core.business

erco.sale

core.tg

core.com.ua

reco.at

creo.co.uk

erco.ca

reco.com.au

core.toys

rcoe.com.br

ecor.com.co

creo.dev

core.microsoft

eorc.com

ecro.cn

ecor.sakura.ne.jp

core.nic.in

reoc.com

core.gen.tr

core.org.pt

core.com.sg

creo.eu

core.city

creo.zone

orec.de

cero.be

ecor.eu

core.sk

reco.promo

reco.mobi

reco.shop

creo.mobi

coer.org.nz

ceor.ru

core.at

erco.com

erco.com.cn

DNS History

16 records (7 active, 9 former)

○NSdns42.cloudns.net2026-02-15 → 2026-02-16 · 5 obs

○ 2017-10-10 22:33:26
● 2026-02-15 02:52:34
● 2026-02-16 23:58:30
○ 2026-02-27 20:48:42
○ 2026-05-30 16:21:34

○NSdns44.cloudns.net2026-02-15 → 2026-02-16 · 5 obs

○ 2017-10-10 22:33:26
● 2026-02-15 02:52:34
● 2026-02-16 23:58:30
○ 2026-02-27 20:48:42
○ 2026-05-30 16:21:34

●NSlisa.ns.cloudflare.com2026-02-27 → 2026-05-30 · 3 obs

○ 2026-02-16 23:58:30
● 2026-02-27 20:48:42
● 2026-05-30 16:21:34

●NSnorm.ns.cloudflare.com2026-02-27 → 2026-05-30 · 3 obs

○ 2026-02-16 23:58:30
● 2026-02-27 20:48:42
● 2026-05-30 16:21:34

○NSns1.core.tf2015-07-24 → 2026-02-16 · 4 obs

● 2015-07-24 14:07:22
● 2026-02-16 23:58:30
○ 2026-02-27 20:48:42
○ 2026-05-30 16:21:34

○NSns2.core.tf2015-07-24 → 2017-10-10 · 4 obs

● 2015-07-24 14:07:22
● 2017-10-10 22:33:26
○ 2026-02-15 02:52:34
○ 2026-05-30 16:21:34

○NSns3.core.tf2026-02-15 → 2026-02-16 · 5 obs

○ 2017-10-10 22:33:26
● 2026-02-15 02:52:34
● 2026-02-16 23:58:30
○ 2026-02-27 20:48:42
○ 2026-05-30 16:21:34

○NSns4-l2.nic.ru2026-02-15 → 2026-02-16 · 5 obs

○ 2017-10-10 22:33:26
● 2026-02-15 02:52:34
● 2026-02-16 23:58:30
○ 2026-02-27 20:48:42
○ 2026-05-30 16:21:34

○NSns4.core.tf2026-02-15 → 2026-02-16 · 5 obs

○ 2017-10-10 22:33:26
● 2026-02-15 02:52:34
● 2026-02-16 23:58:30
○ 2026-02-27 20:48:42
○ 2026-05-30 16:21:34

○NSns8-l2.nic.ru2026-02-15 → 2026-02-16 · 5 obs

○ 2017-10-10 22:33:26
● 2026-02-15 02:52:34
● 2026-02-16 23:58:30
○ 2026-02-27 20:48:42
○ 2026-05-30 16:21:34

●MXalt1.aspmx.l.google.com2026-02-15 → 2026-05-30 · 3 obs

○ 2017-10-10 22:33:26
● 2026-02-15 02:52:34
● 2026-05-30 16:21:34

●MXalt2.aspmx.l.google.com2026-02-15 → 2026-05-30 · 3 obs

○ 2017-10-10 22:33:26
● 2026-02-15 02:52:34
● 2026-05-30 16:21:34

●MXalt3.aspmx.l.google.com2026-02-15 → 2026-05-30 · 3 obs

○ 2017-10-10 22:33:26
● 2026-02-15 02:52:34
● 2026-05-30 16:21:34

●MXalt4.aspmx.l.google.com2026-02-15 → 2026-05-30 · 3 obs

○ 2017-10-10 22:33:26
● 2026-02-15 02:52:34
● 2026-05-30 16:21:34

●MXaspmx.l.google.com2026-02-15 → 2026-05-30 · 3 obs

○ 2017-10-10 22:33:26
● 2026-02-15 02:52:34
● 2026-05-30 16:21:34

○MXnmx.core.tf2015-07-24 → 2017-10-10 · 4 obs

● 2015-07-24 14:07:22
● 2017-10-10 22:33:26
○ 2026-02-15 02:52:34
○ 2026-05-30 16:21:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
tf	g.ext.nic.fr, d.nic.fr, f.ext.nic.fr	6 records
core.tf	norm.ns.cloudflare.com, lisa.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.131

NS records: norm.ns.cloudflare.com, lisa.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for core.tf (unsigned zone)

⏱️ Timing

Total: 1156ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`lisa.ns.cloudflare.com, norm.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	2	`google-site-verification=M6_-Dg60mriirIF, v=spf1 +a:core.tf +ip4:78.140.196.142 +i`
SOA	1	`lisa.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 6

Out-of-bailiwick: 6 (g.ext.nic.fr, f.ext.nic.fr, d.nic.fr...)

Analysis

Hierarchy

core.tf serves as the parent of scruffy.core.tf and api.core.tf.

Name Servers

core.tf has two authoritative name servers — lisa.ns.cloudflare.com and norm.ns.cloudflare.com.

The name server configuration of core.tf is shared with other domains, for instance artfel.eu, srgukmaninda.com, visualedgemedia.com and two others.

At least some of core.tf's name servers are shared with other domains, for example studentfilmfestival.nl, blinq.net, reach.gr and two more.

These name servers tend to be deployed in combination with the name servers ken.ns.cloudflare.com and lady.ns.cloudflare.com.

Hosts with 6 IP addresses each:

lisa.ns.cloudflare.com directs to 108.162.192.131, 172.64.32.131, 173.245.58.131 and three others.

norm.ns.cloudflare.com directs to 108.162.193.134, 172.64.33.134, 173.245.59.134 and three others.

Mail Servers

Mail for core.tf is routed through 5 mail servers, including aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

At least some of the mail servers used by core.tf are shared with other domains: langham.net, ns500698.ns500759.ns500698.ns500759.ns500735.ns500698.ns500708.ns500698.ns500619.ns500698.ns500686.ns500652.ns500619.trackreceptor.com, ns500754.ns500742.ns500671.ns500742.ns500754.ns500742.ns500671.ns500688.ns500671.ns500671.ns500678.ns500666.lustychickser.com and two others among them.

It is common to find these mail servers paired with the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and aspmx2.googlemail.com, as well as two others.

Host names pointing to two IP addresses:

aspmx.l.google.com resolves to 142.251.163.27 and 2607:f8b0:4004:c09::1b.

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

alt2.aspmx.l.google.com resolves to 172.253.145.27 and 2607:f8b0:4023:3003::1b.

alt3.aspmx.l.google.com resolves to 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com resolves to 142.250.147.26 and 2a00:1450:4025:c01::1b.