21csi.com - dns.ninja

21csi.com

DNSSEC⚠️ Not signed
A149.202.31.88🇫🇷 OVH149.202.0.0/16
PTRip88.ip-149-202-31.eu
NSns1.namebrightdns.com ⭐
A2600:1f18:683a:ae1a:c41d:b4cf:322b:2aa6🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix
A3.89.42.183🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix
PTRec2-3-89-42-183.compute-1.amazonaws.com
A100.58.124.42🇺🇸 Amazon100.48.0.0/12 EC2 IAD prefix
PTRec2-100-58-124-42.compute-1.amazonaws.com
NSns2.namebrightdns.com
A2600:1f18:683a:ae1a:d98d:77d0:4351:e98f🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix
A2600:1f18:683a:ae1b:8b8e:2173:9d62:5394🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix
A2600:1f18:683a:ae1b:96f8:d2c8:7f34:9449🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix
A35.175.192.103🇺🇸 Amazon35.168.0.0/13 EC2 IAD prefix
PTRec2-35-175-192-103.compute-1.amazonaws.com
A54.163.9.173🇺🇸 Amazon54.160.0.0/14 EC2 IAD prefix
PTRec2-54-163-9-173.compute-1.amazonaws.com
SOAns1.namebrightdns.comdns@namebright.com 2026-08-12 #1

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=1786578159
WOT: SAFE (61/100)

Subdomains

mail.21csi.com
www.21csi.com

Same first word

21csi.com

Similar names

isc21.kr
isc21.jp
cis21.com
isc21.com
isc21.co.jp
ics21.com
sci21.com
sic21.ro
21sci.com
21cis.net

DNS History

23 records (3 active, 20 former)

20162017201820192020202120222023202420252026NSns1.namebrightdns.comns2.namebrightdns.comdilbert.ns.cloudflare.comns1.dnsimple.comns1.fairyserver.comns1.sedoparking.comns2.dnsimple.comns2.fairyserver.comns2.sedoparking.comns3.dnsimple.comns4.dnsimple.comrosa.ns.cloudflare.comMXmail.nickstel.commailstore1.secureserver.netsmtp.secureserver.netA149.202.31.88104.27.148.175104.27.149.175153.126.184.1972606:4700:3032::681b:94af2606:4700:3035::681b:95af50.31.225.9372.52.4.121
○NSdilbert.ns.cloudflare.com2020-02-18 → 2020-02-18 · 4 obs
○ 2017-03-25 16:57:54
● 2020-02-18 21:46:36
○ 2026-02-24 01:32:14
○ 2026-08-12 23:53:48
○NSns1.dnsimple.com2015-04-13 → 2015-11-01 · 4 obs
● 2015-04-13 14:15:16
● 2015-11-01 23:22:50
○ 2016-01-24 06:20:30
○ 2026-08-12 23:53:48
○NSns1.fairyserver.com2017-03-25 → 2017-03-25 · 4 obs
○ 2016-07-24 20:07:10
● 2017-03-25 16:57:54
○ 2020-02-18 21:46:36
○ 2026-08-12 23:53:48
●NSns1.namebrightdns.com2026-02-24 → 2026-08-12 · 3 obs
○ 2020-02-18 21:46:36
● 2026-02-24 01:32:14
● 2026-08-12 23:53:48
○NSns1.sedoparking.com2016-01-24 → 2016-07-24 · 5 obs
○ 2015-11-01 23:22:50
● 2016-01-24 06:20:30
● 2016-07-24 20:07:10
○ 2017-03-25 16:57:54
○ 2026-08-12 23:53:48
○NSns2.dnsimple.com2015-04-13 → 2015-11-01 · 4 obs
● 2015-04-13 14:15:16
● 2015-11-01 23:22:50
○ 2016-01-24 06:20:30
○ 2026-08-12 23:53:48
○NSns2.fairyserver.com2017-03-25 → 2017-03-25 · 4 obs
○ 2016-07-24 20:07:10
● 2017-03-25 16:57:54
○ 2020-02-18 21:46:36
○ 2026-08-12 23:53:48
●NSns2.namebrightdns.com2026-02-24 → 2026-08-12 · 3 obs
○ 2020-02-18 21:46:36
● 2026-02-24 01:32:14
● 2026-08-12 23:53:48
○NSns2.sedoparking.com2016-01-24 → 2016-07-24 · 5 obs
○ 2015-11-01 23:22:50
● 2016-01-24 06:20:30
● 2016-07-24 20:07:10
○ 2017-03-25 16:57:54
○ 2026-08-12 23:53:48
○NSns3.dnsimple.com2015-04-13 → 2015-11-01 · 4 obs
● 2015-04-13 14:15:16
● 2015-11-01 23:22:50
○ 2016-01-24 06:20:30
○ 2026-08-12 23:53:48
○NSns4.dnsimple.com2015-04-13 → 2015-11-01 · 4 obs
● 2015-04-13 14:15:16
● 2015-11-01 23:22:50
○ 2016-01-24 06:20:30
○ 2026-08-12 23:53:48
○NSrosa.ns.cloudflare.com2020-02-18 → 2020-02-18 · 4 obs
○ 2017-03-25 16:57:54
● 2020-02-18 21:46:36
○ 2026-02-24 01:32:14
○ 2026-08-12 23:53:48
○MXmail.nickstel.com2016-01-24 → 2016-07-24 · 5 obs
○ 2015-11-01 23:22:50
● 2016-01-24 06:20:30
● 2016-07-24 20:07:10
○ 2017-03-25 16:57:54
○ 2026-08-12 23:53:48
○MXmailstore1.secureserver.net2015-04-13 → 2015-11-01 · 4 obs
● 2015-04-13 14:15:16
● 2015-11-01 23:22:50
○ 2016-01-24 06:20:30
○ 2026-08-12 23:53:48
○MXsmtp.secureserver.net2015-04-13 → 2015-11-01 · 4 obs
● 2015-04-13 14:15:16
● 2015-11-01 23:22:50
○ 2016-01-24 06:20:30
○ 2026-08-12 23:53:48
○A104.27.148.1752020-02-18 → 2020-02-18 · 4 obs
○ 2017-03-25 16:57:54
● 2020-02-18 21:46:36
○ 2026-02-24 01:32:14
○ 2026-08-12 23:53:48
○A104.27.149.1752020-02-18 → 2020-02-18 · 4 obs
○ 2017-03-25 16:57:54
● 2020-02-18 21:46:36
○ 2026-02-24 01:32:14
○ 2026-08-12 23:53:48
●A149.202.31.882026-02-24 → 2026-08-12 · 3 obs
○ 2020-02-18 21:46:36
● 2026-02-24 01:32:14
● 2026-08-12 23:53:48
○A153.126.184.1972017-03-25 → 2017-03-25 · 4 obs
○ 2016-07-24 20:07:10
● 2017-03-25 16:57:54
○ 2020-02-18 21:46:36
○ 2026-08-12 23:53:48
○A2606:4700:3032::681b:94af2020-02-18 → 2020-02-18 · 4 obs
○ 2017-03-25 16:57:54
● 2020-02-18 21:46:36
○ 2026-02-24 01:32:14
○ 2026-08-12 23:53:48
○A2606:4700:3035::681b:95af2020-02-18 → 2020-02-18 · 4 obs
○ 2017-03-25 16:57:54
● 2020-02-18 21:46:36
○ 2026-02-24 01:32:14
○ 2026-08-12 23:53:48
○A50.31.225.932015-04-13 → 2015-11-01 · 4 obs
● 2015-04-13 14:15:16
● 2015-11-01 23:22:50
○ 2016-01-24 06:20:30
○ 2026-08-12 23:53:48
○A72.52.4.1212016-01-24 → 2016-07-24 · 5 obs
○ 2015-11-01 23:22:50
● 2016-01-24 06:20:30
● 2016-07-24 20:07:10
○ 2017-03-25 16:57:54
○ 2026-08-12 23:53:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comc.gtld-servers.net, j.gtld-servers.net, m.gtld-servers.net, h.gtld-servers.net...-
21csi.comns1.namebrightdns.com, ns2.namebrightdns.com8 records

✅ Authoritative Response

Server:35.175.192.103

NS records: ns1.namebrightdns.com, ns2.namebrightdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21csi.com (unsigned zone)

⏱️ Timing

Total: 111ms | Queries: -

📄 Records

TypeCountSample Data
A1149.202.31.88
NS2ns1.namebrightdns.com, ns2.namebrightdns.com
SOA1ns1.namebrightdns.com dns.namebright.com

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns1.namebrightdns.com, ns1.namebrightdns.com, ns1.namebrightdns.com...)

Analysis

Hierarchy

mail.21csi.com and www.21csi.com each fall under 21csi.com as their parent domain.

IP Addresses

21csi.com resolves to just one IP address, 149.202.31.88.

Two other host names, along with gkmweb.com, mail.runmuzik.fr and mailspool.domlike.net, also share IP numbers with 21csi.com.

Name Servers

The NS records for 21csi.com delegate to ns1.namebrightdns.com and ns2.namebrightdns.com.

21csi.com shares its NS records with other domains, for example lojaa.com, mail.lookmytrips.com, anthemhosting.com and two others.

21csi.com partially shares its NS delegation with several other domains, including grmpf.com, moneyhousemortgage.com, aussports.com and two others.

The name servers nsg1.namebrightdns.com, nsg2.namebrightdns.com, domain-for-sale.hugedomainsdns.com and forsale.hugedomainsdns.com are often found in use alongside these name servers.

Host names directing to five IP addresses:

ns2.namebrightdns.com has four IP addresses — 35.175.192.103, 54.163.9.173, 2600:1f18:683a:ae1a:d98d:77d0:4351:e98f and two others.

Hostnames that map to three IP numbers:

ns1.namebrightdns.com maps to three IP addresses: 3.89.42.183, 100.58.124.42 and 2600:1f18:683a:ae1a:c41d:b4cf:322b:2aa6.