jkoolb.com - robtex.com

jkoolb.com

DNSSEC⚠️ Not signed
A27.121.68.114🇦🇺 INT-5GN-AS-AP27.121.64.0/21 DIT route
PTRs3367.syd1.stableserver.net
NSns1.melbourneit.net ⭐ ⚠️ Not in parent delegation
A13.248.158.180🇺🇸 Amazon13.248.144.0/20
PTRa79764cc55c0ac9c0.awsglobalaccelerator.com
NSns1.mysecurecloudhost.com ⚠️ Not in zone NS records
A13.248.158.180🇺🇸 Amazon13.248.144.0/20
PTRa79764cc55c0ac9c0.awsglobalaccelerator.com
NSns2.melbourneit.net ⚠️ Not in parent delegation
A75.2.118.134🇺🇸 Amazon75.2.112.0/20
PTRabc65dd9a44b5332f.awsglobalaccelerator.com
NSns2.mysecurecloudhost.com ⚠️ Not in zone NS records
A75.2.118.134🇺🇸 Amazon75.2.112.0/20
PTRabc65dd9a44b5332f.awsglobalaccelerator.com
NSns3.melbourneit.net ⚠️ Not in parent delegation
A76.223.26.245🇺🇸 Amazon76.223.16.0/20
PTRa79764cc55c0ac9c0.awsglobalaccelerator.com
NSns3.mysecurecloudhost.com ⚠️ Not in zone NS records
A76.223.26.245🇺🇸 Amazon76.223.16.0/20
PTRa79764cc55c0ac9c0.awsglobalaccelerator.com
NSns4.melbourneit.net ⚠️ Not in parent delegation
A99.83.147.209🇺🇸 Amazon99.83.144.0/20
PTRabc65dd9a44b5332f.awsglobalaccelerator.com
NSns4.mysecurecloudhost.com ⚠️ Not in zone NS records
A99.83.147.209🇺🇸 Amazon99.83.144.0/20
PTRabc65dd9a44b5332f.awsglobalaccelerator.com
MXjkoolb-com.mail.protection.outlook.com ⭐
A2a01:111:f403:c903::3🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-mw2pr02cu00503.inbound.protection.outlook.com
A2a01:111:f403:c946::4🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-ch0pr04cu00504.inbound.protection.outlook.com
A2a01:111:f403:f802::1🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-sj2pr05cu00101.inbound.protection.outlook.com
A2a01:111:f403:f804::3🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-co1pr03cu00403.inbound.protection.outlook.com
A52.101.9.24🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-bl2pr02cu00400.inbound.protection.outlook.com
A52.101.10.2🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-bn8pr03cu00202.inbound.protection.outlook.com
A52.101.41.22🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-sj2pr05cu00406.inbound.protection.outlook.com
A52.101.42.18🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-co1pr03cu00302.inbound.protection.outlook.com
SOAns1.melbourneit.netadmin@melbourneit.net 2025-11-05 #12

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=1774752172

Same first word

jkoolb.com

Similar names

bookjl.com
bjlook.cn
joblok.com
bjlook.com
jokbol.com
lookbj.cn
jlbook.co.kr
bolokj.com
jbkool.com
bjlook.com.cn
ljbook.com

DNS History

17 records (10 active, 7 former)

20162017201820192020202120222023202420252026NSns1.melbourneit.netns1.mysecurecloudhost.comns2.melbourneit.netns2.mysecurecloudhost.comns3.melbourneit.netns3.mysecurecloudhost.comns4.melbourneit.netns4.mysecurecloudhost.comns1.bdm.microsoftonline.comns2.bdm.microsoftonline.comns3.bdm.microsoftonline.comns4.bdm.microsoftonline.comMXjkoolb-com.mail.protection.outlook.comjkoolb-com.mail.eo.outlook.comA27.121.68.114134.170.208.34134.170.210.34
○NSns1.bdm.microsoftonline.com2015-08-14 → 2017-10-15 · 4 obs
● 2015-08-14 18:28:18
● 2017-10-15 12:44:28
○ 2026-02-15 16:31:04
○ 2026-03-29 02:47:56
●NSns1.melbourneit.net2026-02-15 → 2026-03-29 · 3 obs
○ 2017-10-15 12:44:28
● 2026-02-15 16:31:04
● 2026-03-29 02:47:56
●NSns1.mysecurecloudhost.com2026-02-15 → 2026-03-29 · 3 obs
○ 2017-10-15 12:44:28
● 2026-02-15 16:31:04
● 2026-03-29 02:47:56
○NSns2.bdm.microsoftonline.com2015-08-14 → 2017-10-15 · 4 obs
● 2015-08-14 18:28:18
● 2017-10-15 12:44:28
○ 2026-02-15 16:31:04
○ 2026-03-29 02:47:56
●NSns2.melbourneit.net2026-02-15 → 2026-03-29 · 3 obs
○ 2017-10-15 12:44:28
● 2026-02-15 16:31:04
● 2026-03-29 02:47:56
●NSns2.mysecurecloudhost.com2026-02-15 → 2026-03-29 · 3 obs
○ 2017-10-15 12:44:28
● 2026-02-15 16:31:04
● 2026-03-29 02:47:56
○NSns3.bdm.microsoftonline.com2015-08-14 → 2017-10-15 · 4 obs
● 2015-08-14 18:28:18
● 2017-10-15 12:44:28
○ 2026-02-15 16:31:04
○ 2026-03-29 02:47:56
●NSns3.melbourneit.net2026-02-15 → 2026-03-29 · 3 obs
○ 2017-10-15 12:44:28
● 2026-02-15 16:31:04
● 2026-03-29 02:47:56
●NSns3.mysecurecloudhost.com2026-02-15 → 2026-03-29 · 3 obs
○ 2017-10-15 12:44:28
● 2026-02-15 16:31:04
● 2026-03-29 02:47:56
○NSns4.bdm.microsoftonline.com2015-08-14 → 2017-10-15 · 4 obs
● 2015-08-14 18:28:18
● 2017-10-15 12:44:28
○ 2026-02-15 16:31:04
○ 2026-03-29 02:47:56
●NSns4.melbourneit.net2026-02-15 → 2026-03-29 · 3 obs
○ 2017-10-15 12:44:28
● 2026-02-15 16:31:04
● 2026-03-29 02:47:56
●NSns4.mysecurecloudhost.com2026-02-15 → 2026-03-29 · 3 obs
○ 2017-10-15 12:44:28
● 2026-02-15 16:31:04
● 2026-03-29 02:47:56
○MXjkoolb-com.mail.eo.outlook.com2015-08-14 → 2017-10-15 · 4 obs
● 2015-08-14 18:28:18
● 2017-10-15 12:44:28
○ 2026-02-15 16:31:04
○ 2026-03-29 02:47:56
●MXjkoolb-com.mail.protection.outlook.com2026-02-15 → 2026-03-29 · 3 obs
○ 2017-10-15 12:44:28
● 2026-02-15 16:31:04
● 2026-03-29 02:47:56
○A134.170.208.342016-04-25 → 2017-10-15 · 5 obs
○ 2015-12-02 09:36:04
● 2016-04-25 14:14:32
● 2017-10-15 12:44:28
○ 2026-02-15 16:31:04
○ 2026-03-29 02:47:56
○A134.170.210.342015-08-14 → 2015-12-02 · 4 obs
● 2015-08-14 18:28:18
● 2015-12-02 09:36:04
○ 2016-04-25 14:14:32
○ 2026-03-29 02:47:56
●A27.121.68.1142026-02-15 → 2026-03-29 · 3 obs
○ 2017-10-15 12:44:28
● 2026-02-15 16:31:04
● 2026-03-29 02:47:56

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
jkoolb.comns1.mysecurecloudhost.com, ns2.mysecurecloudhost.com, ns3.mysecurecloudhost.com, ns4.mysecurecloudhost.com4 records

✅ Authoritative Response

Server:75.2.118.134

NS records: ns1.mysecurecloudhost.com, ns2.mysecurecloudhost.com, ns3.mysecurecloudhost.com, ns4.mysecurecloudhost.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jkoolb.com (unsigned zone)

⏱️ Timing

Total: 117ms | Queries: -

📄 Records

TypeCountSample Data
A127.121.68.114
NS4ns2.melbourneit.net, ns3.melbourneit.net...
MX1jkoolb-com.mail.protection.outlook.com (
SOA1ns1.melbourneit.net admin.melbourneit.ne

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.mysecurecloudhost.com, ns2.mysecurecloudhost.com, ns3.mysecurecloudhost.com...)

Analysis

IP Addresses

jkoolb.com points to a single IP number: 27.121.68.114.

Other host names, for instance boldfood.com.au, lewiscollins.com.au, sandilands.id.au, iucncsg.org and adrs.com.au share IP numbers with jkoolb.com.

Name Servers

jkoolb.com delegates to eight name servers: ns1.mysecurecloudhost.com, ns2.mysecurecloudhost.com, ns3.mysecurecloudhost.com, ns4.mysecurecloudhost.com, ns1.melbourneit.net, ns2.melbourneit.net, ns3.melbourneit.net and ns4.melbourneit.net.

jkoolb.com shares name servers with other domains at least partially, for instance icc.edu.bd, omsua.com, deniarose.com, vantek.net and amahoronews.com.

Hostnames with a single IP:

Host ns1.mysecurecloudhost.com points to 13.248.158.180

Host ns2.mysecurecloudhost.com points to 75.2.118.134

Host ns3.mysecurecloudhost.com points to 76.223.26.245

Host ns4.mysecurecloudhost.com points to 99.83.147.209

Host ns1.melbourneit.net points to 13.248.158.180

Host ns2.melbourneit.net points to 75.2.118.134

Host ns3.melbourneit.net points to 76.223.26.245

Host ns4.melbourneit.net points to 99.83.147.209

Hosts pointing to 13.248.158.180: ns1.mysecurecloudhost.com and ns1.melbourneit.net

Hosts pointing to 75.2.118.134: ns2.mysecurecloudhost.com and ns2.melbourneit.net

Hosts pointing to 76.223.26.245: ns3.mysecurecloudhost.com and ns3.melbourneit.net

Hosts pointing to 99.83.147.209: ns4.mysecurecloudhost.com and ns4.melbourneit.net

Mail Servers

The mail server for jkoolb.com is jkoolb-com.mail.protection.outlook.com.

Host jkoolb-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c903::3, 2a01:111:f403:c946::4, 2a01:111:f403:f802::1, 2a01:111:f403:f804::3, 52.101.9.24, 52.101.10.2, 52.101.41.22 and 52.101.42.18.