grenholms.com - dns.ninja

grenholms.com

DNSSEC⚠️ Not signed
A81.21.224.16🇸🇪 KARNIT81.21.224.0/24
PTRwebcluster01.coreit.cloud
NSns1.coreit.se ⭐
A2a0d:26c0:3:50::18🇸🇪 KARNIT2a0d:26c0::/32
PTRns1.coreit.se
A85.11.198.175🇸🇪 KARNIT85.11.192.0/18 Ovik Energi AB
NSns2.coreit.se
A2603:1020:201:e::170🇳🇱 Microsoft2603:1000::/25 MICROSOFT
A20.73.51.17🇳🇱 Microsoft20.64.0.0/10
PTRns2.coreit.se
NSns3.coreit.se
A2a0d:26c0:3:1::10🇸🇪 KARNIT2a0d:26c0::/32
A81.21.224.20🇸🇪 KARNIT81.21.224.0/24
PTRns3.coreit.se
MXgrenholms-com.mail.protection.outlook.com ⭐
A2a01:111:f403:ca04::7🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-db4pr02cu00307.inbound.protection.outlook.com
A2a01:111:f403:ca09::4🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-am0pr04cu00504.inbound.protection.outlook.com
A2a01:111:f403:ca09::5🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-am1pr04cu00105.inbound.protection.outlook.com
A2a01:111:f403:ca09::e🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-am7pr05cu00206.inbound.protection.outlook.com
A52.101.68.25🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db8pr02cu00101.inbound.protection.outlook.com
A52.101.73.19🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-as8pr04cu00803.inbound.protection.outlook.com
A52.101.73.28🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-am7pr05cu00204.inbound.protection.outlook.com
A52.101.73.153🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-as8pr05cu00401.inbound.protection.outlook.com
TXT_r38kzioogziebmg3syi6bj871cxe1tb
TXT_70zrv3gqjkgzgs8vyyzq8vrayco13bv
TXTMS=ms80244019
TXTv=spf1 include:spf.protection.outlook.com -all
TXTCOREID=GRKY
SOAns1.coreit.seregistry@coreit.se 2022-09-22 #19

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1786019329

Subdomains

mail.grenholms.com

Same first word

grenholms.com
grenholms.se

Similar names

grensholm.se
holmgrens.se
holmgrens.org

DNS History

15 records (5 active, 10 former)

20162017201820192020202120222023202420252026NSns1.coreit.sens2.coreit.sens3.coreit.sedns.it-norr.comdns2.it-norr.comns1.cust.port53.sens1.mirror.sens2.cust.port53.sens2.mirror.sens3.cust.port53.seMXgrenholms-com.mail.protection.outlook.commail.grenholms.comA81.21.224.1693.92.0.10693.92.0.185
○NSdns.it-norr.com2015-11-12 → 2016-06-25 · 5 obs
○ 2015-06-19 05:50:14
● 2015-11-12 16:38:32
● 2016-06-25 05:58:02
○ 2017-03-14 00:33:42
○ 2026-08-06 12:42:30
○NSdns2.it-norr.com2015-11-12 → 2016-06-25 · 5 obs
○ 2015-06-19 05:50:14
● 2015-11-12 16:38:32
● 2016-06-25 05:58:02
○ 2017-03-14 00:33:42
○ 2026-08-06 12:42:30
●NSns1.coreit.se2026-03-06 → 2026-08-06 · 3 obs
○ 2020-01-31 11:47:38
● 2026-03-06 03:31:06
● 2026-08-06 12:42:30
○NSns1.cust.port53.se2015-06-19 → 2015-06-19 · 3 obs
● 2015-06-19 05:50:14
○ 2015-11-12 16:38:32
○ 2026-08-06 12:42:30
○NSns1.mirror.se2017-03-14 → 2020-01-31 · 5 obs
○ 2016-06-25 05:58:02
● 2017-03-14 00:33:42
● 2020-01-31 11:47:38
○ 2026-03-06 03:31:06
○ 2026-08-06 12:42:30
●NSns2.coreit.se2026-03-06 → 2026-08-06 · 3 obs
○ 2020-01-31 11:47:38
● 2026-03-06 03:31:06
● 2026-08-06 12:42:30
○NSns2.cust.port53.se2015-06-19 → 2015-06-19 · 3 obs
● 2015-06-19 05:50:14
○ 2015-11-12 16:38:32
○ 2026-08-06 12:42:30
○NSns2.mirror.se2017-03-14 → 2020-01-31 · 5 obs
○ 2016-06-25 05:58:02
● 2017-03-14 00:33:42
● 2020-01-31 11:47:38
○ 2026-03-06 03:31:06
○ 2026-08-06 12:42:30
●NSns3.coreit.se2026-03-06 → 2026-08-06 · 3 obs
○ 2020-01-31 11:47:38
● 2026-03-06 03:31:06
● 2026-08-06 12:42:30
○NSns3.cust.port53.se2015-06-19 → 2015-06-19 · 3 obs
● 2015-06-19 05:50:14
○ 2015-11-12 16:38:32
○ 2026-08-06 12:42:30
●MXgrenholms-com.mail.protection.outlook.com2015-11-12 → 2026-08-06 · 3 obs
○ 2015-06-19 05:50:14
● 2015-11-12 16:38:32
● 2026-08-06 12:42:30
○MXmail.grenholms.com2015-06-19 → 2015-06-19 · 3 obs
● 2015-06-19 05:50:14
○ 2015-11-12 16:38:32
○ 2026-08-06 12:42:30
●A81.21.224.162026-03-06 → 2026-08-06 · 3 obs
○ 2020-01-31 11:47:38
● 2026-03-06 03:31:06
● 2026-08-06 12:42:30
○A93.92.0.1062015-06-19 → 2016-06-25 · 4 obs
● 2015-06-19 05:50:14
● 2016-06-25 05:58:02
○ 2017-03-14 00:33:42
○ 2026-08-06 12:42:30
○A93.92.0.1852017-03-14 → 2020-01-31 · 5 obs
○ 2016-06-25 05:58:02
● 2017-03-14 00:33:42
● 2020-01-31 11:47:38
○ 2026-03-06 03:31:06
○ 2026-08-06 12:42:30

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comg.gtld-servers.net, m.gtld-servers.net, f.gtld-servers.net, b.gtld-servers.net...-
grenholms.comns1.coreit.se, ns2.coreit.se, ns3.coreit.se-

✅ Authoritative Response

Server:81.21.224.20

NS records: ns1.coreit.se, ns2.coreit.se, ns3.coreit.se

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for grenholms.com (unsigned zone)

⏱️ Timing

Total: 1155ms | Queries: -

📄 Records

TypeCountSample Data
A181.21.224.16
NS3ns3.coreit.se, ns1.coreit.se...
MX1grenholms-com.mail.protection.outlook.co
TXT5_70zrv3gqjkgzgs8vyyzq8vrayco13bv, _r38kzioogziebmg3syi6bj871cxe1tb...
SOA1ns1.coreit.se registry.coreit.se

Analysis

Hierarchy

mail.grenholms.com is delegated beneath grenholms.com.

IP Addresses

grenholms.com resolves to just one IP address, 81.21.224.16.

Two other host names, along with datea.se, wp.coreit.cloud and krall.eu, also share IP numbers with grenholms.com.

Name Servers

grenholms.com is delegated to three name servers: ns1.coreit.se, ns2.coreit.se and ns3.coreit.se.

There is at least partial name server overlap between grenholms.com and other domains — jarven.net, coreit.cloud, fonsterspec.se and two more among them.

ns1.coreit.se, ns2.coreit.se and ns3.coreit.se each resolve to two IP addresses: ns1.coreit.se resolves to 85.11.198.175 and 2a0d:26c0:3:50::18; ns2.coreit.se resolves to 20.73.51.17 and 2603:1020:201:e::170; ns3.coreit.se resolves to 81.21.224.20 and 2a0d:26c0:3:1::10.

Mail Servers

The sole mail server for grenholms.com is grenholms-com.mail.protection.outlook.com.

With 8 IP addresses total, grenholms-com.mail.protection.outlook.com resolves to 52.101.68.25, 52.101.73.19, 52.101.73.28 and 5 others.