knowledge-center.com - dns.ninja

knowledge-center.com

DNSSEC⚠️ Not signed
A75.2.103.146🇺🇸 Amazon75.2.96.0/20
PTRa4972715dfa2f21c3.awsglobalaccelerator.com
A99.83.188.150🇺🇸 Amazon99.83.176.0/20
NSns05.gcd-dns.com ⭐
A2603:5:21e1::34🇺🇸 GODADDY-DNS2603:5:21e0::/44
PTRpdns05.domaincontrol.com
A97.74.110.52🇺🇸 GODADDY-DNS97.74.110.0/23
PTRpdns05.domaincontrol.com
NSns06.gcd-dns.com
A2603:5:22e1::34🇺🇸 GODADDY-DNS2603:5:22e0::/44
PTRpdns06.domaincontrol.com
A173.201.78.52🇺🇸 GODADDY-DNS173.201.78.0/23
PTRpdns06.domaincontrol.com
MXmx1.hc2640-31.iphmx.com ⭐
A68.232.137.48🇺🇸 CISCO-168.232.137.0/24 170 West Tasman Drive San Jose CA 95134 United States
A68.232.155.49🇺🇸 CISCO-168.232.155.0/24 170 West Tasman Drive San Jose CA 95134 United States
MXmx2.hc2640-31.iphmx.com(10)
A68.232.137.48🇺🇸 CISCO-168.232.137.0/24 170 West Tasman Drive San Jose CA 95134 United States
A68.232.155.49🇺🇸 CISCO-168.232.155.0/24 170 West Tasman Drive San Jose CA 95134 United States
TXTv=spf1 -all
SOAns05.gcd-dns.comdns@jomax.net 2026-05-25 #0

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=1783241431

Subdomains

www.knowledge-center.com

Same first word

knowledge-center.com
knowledge-center.ch

DNS History

12 records (6 active, 6 former)

20162017201820192020202120222023202420252026NSns05.gcd-dns.comns06.gcd-dns.comns31.domaincontrol.comns32.domaincontrol.comMXmx1.hc2640-31.iphmx.commx2.hc2640-31.iphmx.commx01.biz.comcast.netmx02.biz.comcast.netmx03.biz.comcast.netA75.2.103.14699.83.188.15023.25.94.6
●NSns05.gcd-dns.com2026-02-21 → 2026-07-05 · 3 obs
○ 2017-01-09 22:54:38
● 2026-02-21 16:52:22
● 2026-07-05 09:02:00
●NSns06.gcd-dns.com2026-02-21 → 2026-07-05 · 3 obs
○ 2017-01-09 22:54:38
● 2026-02-21 16:52:22
● 2026-07-05 09:02:00
○NSns31.domaincontrol.com2015-07-21 → 2017-01-09 · 4 obs
● 2015-07-21 23:51:22
● 2017-01-09 22:54:38
○ 2026-02-21 16:52:22
○ 2026-07-05 09:02:00
○NSns32.domaincontrol.com2015-07-21 → 2017-01-09 · 4 obs
● 2015-07-21 23:51:22
● 2017-01-09 22:54:38
○ 2026-02-21 16:52:22
○ 2026-07-05 09:02:00
○MXmx01.biz.comcast.net2015-07-21 → 2017-01-09 · 4 obs
● 2015-07-21 23:51:22
● 2017-01-09 22:54:38
○ 2026-02-21 16:52:22
○ 2026-07-05 09:02:00
○MXmx02.biz.comcast.net2015-07-21 → 2017-01-09 · 4 obs
● 2015-07-21 23:51:22
● 2017-01-09 22:54:38
○ 2026-02-21 16:52:22
○ 2026-07-05 09:02:00
○MXmx03.biz.comcast.net2015-07-21 → 2017-01-09 · 4 obs
● 2015-07-21 23:51:22
● 2017-01-09 22:54:38
○ 2026-02-21 16:52:22
○ 2026-07-05 09:02:00
●MXmx1.hc2640-31.iphmx.com2026-02-21 → 2026-07-05 · 3 obs
○ 2017-01-09 22:54:38
● 2026-02-21 16:52:22
● 2026-07-05 09:02:00
●MXmx2.hc2640-31.iphmx.com2026-02-21 → 2026-07-05 · 3 obs
○ 2017-01-09 22:54:38
● 2026-02-21 16:52:22
● 2026-07-05 09:02:00
○A23.25.94.62015-07-21 → 2017-01-09 · 4 obs
● 2015-07-21 23:51:22
● 2017-01-09 22:54:38
○ 2026-02-21 16:52:22
○ 2026-07-05 09:02:00
●A75.2.103.1462026-02-21 → 2026-07-05 · 3 obs
○ 2017-01-09 22:54:38
● 2026-02-21 16:52:22
● 2026-07-05 09:02:00
●A99.83.188.1502026-02-21 → 2026-07-05 · 3 obs
○ 2017-01-09 22:54:38
● 2026-02-21 16:52:22
● 2026-07-05 09:02:00

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
knowledge-center.comns06.gcd-dns.com, ns05.gcd-dns.com4 records

✅ Authoritative Response

Server:173.201.78.52

NS records: ns06.gcd-dns.com, ns05.gcd-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for knowledge-center.com (unsigned zone)

⏱️ Timing

Total: 150ms | Queries: -

📄 Records

TypeCountSample Data
A275.2.103.146, 99.83.188.150
NS2ns05.gcd-dns.com, ns06.gcd-dns.com
MX2mx1.hc2640-31.iphmx.com (pri: 0), mx2.hc2640-31.iphmx.com (pri: 10)
TXT1v=spf1 -all
SOA1ns05.gcd-dns.com dns.jomax.net

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns06.gcd-dns.com, ns06.gcd-dns.com, ns05.gcd-dns.com...)

Analysis

Hierarchy

knowledge-center.com is the parent zone for www.knowledge-center.com.

IP Addresses

knowledge-center.com directs to two IP numbers, 75.2.103.146 and 99.83.188.150

Two other host names, along with acklands-graingersafety.ca, cpachargeconnect.com and askgrainger.org, also share IP numbers with knowledge-center.com.

Name Servers

The NS records for knowledge-center.com delegate to ns05.gcd-dns.com and ns06.gcd-dns.com.

knowledge-center.com shares its NS records with other domains, for example graingerchina.cn, hendrickmotorsportsbrutonsmithboulevardautomall.com, superiorgmcbuickcadillackc.com and two others.

ns05.gcd-dns.com resolves to 97.74.110.52 and 2603:5:21e1::34. Likewise, ns06.gcd-dns.com resolves to 173.201.78.52 and 2603:5:22e1::34 — two IP addresses apiece.

Mail Servers

knowledge-center.com is served by two mail servers, mx1.hc2640-31.iphmx.com and mx2.hc2640-31.iphmx.com.

Among the domains sharing a mail server setup with knowledge-center.com are corvena.com, emsystems.com, crisistrack.com and two others.

mx1.hc2640-31.iphmx.com has IP addresses 68.232.137.48 and 68.232.155.49; mx2.hc2640-31.iphmx.com has the same IP addresses: 68.232.137.48 and 68.232.155.49.

mx1.hc2640-31.iphmx.com and mx2.hc2640-31.iphmx.com each have 68.232.137.48 IP addresses.

mx1.hc2640-31.iphmx.com and mx2.hc2640-31.iphmx.com each have 68.232.155.49 IP addresses.