holtz.co - robtex.com

holtz.co

DNSSEC⚠️ Not signed
A138.197.176.99🇩🇪 DIGITALOCEAN138.197.176.0/20 DigitalOcean
NSdns1.registrar-servers.com ⭐
A2610:a1:1024::200🇺🇸 MAINT-ID-120082610:a1:1024::/48 Neustar
PTRdns1.namecheaphosting.com
PTRdns1.registrar-servers.com
A156.154.132.200🇺🇸 MAINT-ID-12008156.154.132.0/24 Neustar
PTRdns1.namecheaphosting.com
PTRdns1.registrar-servers.com
NSdns2.registrar-servers.com
A2610:a1:1025::200🇺🇸 MAINT-ID-120082610:a1:1025::/48 Neustar
PTRdns2.namecheaphosting.com
PTRdns2.registrar-servers.com
A156.154.133.200🇺🇸 MAINT-ID-12008156.154.133.0/24 Neustar
PTRdns2.namecheaphosting.com
PTRdns2.registrar-servers.com
MXholtz-co.mail.protection.outlook.com ⭐
A2a01:111:f403:ca04::d🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-db6pr03cu00105.inbound.protection.outlook.com
A2a01:111:f403:ca09::2🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-am0pr83cu00402.inbound.protection.outlook.com
A2a01:111:f403:ca09::8🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-as2pr05cu00100.inbound.protection.outlook.com
A2a01:111:f403:ca09::9🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-as8pr04cu00801.inbound.protection.outlook.com
A52.101.68.29🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-dbapr03cu00105.inbound.protection.outlook.com
A52.101.68.32🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db3pr0202cu00200.inbound.protection.outlook.com
A52.101.73.6🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-am6pr04cu00306.inbound.protection.outlook.com
A52.101.73.12🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-am4pr0401cu00104.inbound.protection.outlook.com
TXTMS=ms72094978
TXTv=spf1 include:spf.protection.outlook.com -all
SOAdns1.registrar-servers.comhostmaster@registrar-servers.com serial=1666828115

co

DNSSEC🔒 Signed (DS record present)
NSns0.centralnic.net ⭐
NSa.registrydns.co
NSb.registrydns.co
NSc.registrydns.co
NSd.registrydns.co
SOAns0.centralnic.nethostmaster@centralnic.net serial=1759729568

Same first word

holtz.ca
holtz.email
holtz.co.il
holtz.co
holtz.in
holtz.fr
holtz.org
holtz.ch
holtz.eu
holtz.se
holtz.com
holtz.biz
holtz.dk
holtz.co.uk
holtz.net
holtz.ro
holtz.nl
holtz.com.br
holtz.fi
holtz.de
holtz.ru
holtz.cc
holtz.at

Similar names

holzt.net
tholz.ru
hzotl.com
hotlz.com
hzolt.com
tholz.de
hzlot.com
tzhlo.com
zloth.org
zloth.com
lhotz.de
tholz.net.br
tholz.com.br
zolth.com
zloth.net
holzt.de
lothz.com

DNS History

20 records (4 active, 16 former)

20162017201820192020202120222023202420252026NSdns1.registrar-servers.comdns2.registrar-servers.comdns1.name-services.comdns2.name-services.comdns3.name-services.comdns4.name-services.comdns5.name-services.comMXholtz-co.mail.protection.outlook.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comA138.197.176.99188.166.192.200216.239.32.21216.239.34.21216.239.36.21216.239.38.218.8.8.8
○NSdns1.name-services.com2015-07-25 → 2015-07-25 · 3 obs
● 2015-07-25 11:40:22
○ 2015-12-19 03:19:36
○ 2026-08-10 12:16:16
●NSdns1.registrar-servers.com2016-07-16 → 2026-08-10 · 3 obs
○ 2015-12-19 03:19:36
● 2016-07-16 00:52:44
● 2026-08-10 12:16:16
○NSdns2.name-services.com2015-07-25 → 2015-07-25 · 3 obs
● 2015-07-25 11:40:22
○ 2015-12-19 03:19:36
○ 2026-08-10 12:16:16
●NSdns2.registrar-servers.com2016-07-16 → 2026-08-10 · 3 obs
○ 2015-12-19 03:19:36
● 2016-07-16 00:52:44
● 2026-08-10 12:16:16
○NSdns3.name-services.com2015-07-25 → 2015-07-25 · 3 obs
● 2015-07-25 11:40:22
○ 2015-12-19 03:19:36
○ 2026-08-10 12:16:16
○NSdns4.name-services.com2015-07-25 → 2015-07-25 · 3 obs
● 2015-07-25 11:40:22
○ 2015-12-19 03:19:36
○ 2026-08-10 12:16:16
○NSdns5.name-services.com2015-07-25 → 2015-07-25 · 3 obs
● 2015-07-25 11:40:22
○ 2015-12-19 03:19:36
○ 2026-08-10 12:16:16
○MXalt1.aspmx.l.google.com2015-07-25 → 2016-07-16 · 5 obs
● 2015-07-25 11:40:22
○ 2015-12-19 03:19:36
● 2016-07-16 00:52:44
○ 2017-03-17 11:58:48
○ 2026-08-10 12:16:16
○MXalt2.aspmx.l.google.com2015-07-25 → 2016-07-16 · 5 obs
● 2015-07-25 11:40:22
○ 2015-12-19 03:19:36
● 2016-07-16 00:52:44
○ 2017-03-17 11:58:48
○ 2026-08-10 12:16:16
○MXaspmx.l.google.com2015-07-25 → 2016-07-16 · 5 obs
● 2015-07-25 11:40:22
○ 2015-12-19 03:19:36
● 2016-07-16 00:52:44
○ 2017-03-17 11:58:48
○ 2026-08-10 12:16:16
○MXaspmx2.googlemail.com2015-07-25 → 2016-07-16 · 5 obs
● 2015-07-25 11:40:22
○ 2015-12-19 03:19:36
● 2016-07-16 00:52:44
○ 2017-03-17 11:58:48
○ 2026-08-10 12:16:16
○MXaspmx3.googlemail.com2015-07-25 → 2016-07-16 · 5 obs
● 2015-07-25 11:40:22
○ 2015-12-19 03:19:36
● 2016-07-16 00:52:44
○ 2017-03-17 11:58:48
○ 2026-08-10 12:16:16
●MXholtz-co.mail.protection.outlook.com2017-03-17 → 2026-08-10 · 3 obs
○ 2016-07-16 00:52:44
● 2017-03-17 11:58:48
● 2026-08-10 12:16:16
●A138.197.176.992026-06-15 → 2026-08-10 · 3 obs
○ 2017-03-17 11:58:48
● 2026-06-15 16:02:54
● 2026-08-10 12:16:16
○A188.166.192.2002017-03-17 → 2017-03-17 · 4 obs
○ 2016-07-16 00:52:44
● 2017-03-17 11:58:48
○ 2026-06-15 16:02:54
○ 2026-08-10 12:16:16
○A216.239.32.212015-07-25 → 2015-07-25 · 3 obs
● 2015-07-25 11:40:22
○ 2015-12-19 03:19:36
○ 2026-08-10 12:16:16
○A216.239.34.212015-07-25 → 2015-07-25 · 3 obs
● 2015-07-25 11:40:22
○ 2015-12-19 03:19:36
○ 2026-08-10 12:16:16
○A216.239.36.212015-07-25 → 2015-07-25 · 3 obs
● 2015-07-25 11:40:22
○ 2015-12-19 03:19:36
○ 2026-08-10 12:16:16
○A216.239.38.212015-07-25 → 2015-07-25 · 3 obs
● 2015-07-25 11:40:22
○ 2015-12-19 03:19:36
○ 2026-08-10 12:16:16
○A8.8.8.82016-07-16 → 2016-07-16 · 4 obs
○ 2015-12-19 03:19:36
● 2016-07-16 00:52:44
○ 2017-03-17 11:58:48
○ 2026-08-10 12:16:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coa.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co-
holtz.codns2.registrar-servers.com, dns1.registrar-servers.com-

✅ Authoritative Response

Server:156.154.132.200

NS records: dns2.registrar-servers.com, dns1.registrar-servers.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for holtz.co (unsigned zone)

⏱️ Timing

Total: 318ms | Queries: -

📄 Records

TypeCountSample Data
A1138.197.176.99
NS2dns1.registrar-servers.com, dns2.registrar-servers.com
MX1holtz-co.mail.protection.outlook.com (pr
TXT2MS=ms72094978, v=spf1 include:spf.protection.outlook.co
SOA1dns1.registrar-servers.com hostmaster.re

Analysis

IP Addresses

holtz.co has exactly one IP address — 138.197.176.99.

Name Servers

holtz.co uses two name servers for its delegation: dns1.registrar-servers.com and dns2.registrar-servers.com.

The name server configuration of holtz.co is shared with other domains, for instance autoshine.ai, nemomain.xyz, minute1.com and two others.

holtz.co shares at least some of its name servers with other domains, such as kristomo.com and avaalafc.com.

The two host names dns1.registrar-servers.com and dns2.registrar-servers.com each have a pair of IP addresses: dns1.registrar-servers.com has 156.154.132.200 and 2610:a1:1024::200, and dns2.registrar-servers.com has 156.154.133.200 and 2610:a1:1025::200.

Mail Servers

holtz.co uses one mail server — holtz-co.mail.protection.outlook.com.

holtz-co.mail.protection.outlook.com has 8 IP addresses: 52.101.68.29, 52.101.68.32, 52.101.73.6 plus 5 more.