itcom21.com - robtex.com
itcom21.com
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1778568446 | ||||||
Subdomains
swg-proxy.itcom21.com |
ns.itcom21.com |
ns2.itcom21.com |
Same first word
itcom21.com |
DNS History
12 records (5 active, 7 former)
○NSdns-b.iij.ad.jp2015-07-20 → 2016-11-30 · 5 obs
● 2015-07-20 23:05:52
● 2016-11-30 02:50:46
○ 2026-03-07 22:22:10
○ 2026-05-12 06:55:44
○NSdns-c.iij.ad.jp2015-07-20 → 2016-11-30 · 5 obs
● 2015-07-20 23:05:52
● 2016-11-30 02:50:46
○ 2026-03-07 22:22:10
○ 2026-05-12 06:55:44
○NSns.itcom21.com2007-11-06 → 2007-11-06 · 3 obs
○ 2015-07-20 23:05:52
○ 2026-05-12 06:55:44
●NSns000.d-53.net2026-03-07 → 2026-05-12 · 3 obs
● 2026-03-07 22:22:10
● 2026-05-12 06:55:44
●NSns017-p3f9sk5npcu30u1r.p.d-53.info2026-03-07 → 2026-05-12 · 3 obs
● 2026-03-07 22:22:10
● 2026-05-12 06:55:44
●NSns017-p3f9sk5npcu30u1r.p.d-53.jp2026-03-07 → 2026-05-12 · 3 obs
● 2026-03-07 22:22:10
● 2026-05-12 06:55:44
●NSns017-p3f9sk5npcu30u1r.p.d-53.org2026-03-07 → 2026-05-12 · 3 obs
● 2026-03-07 22:22:10
● 2026-05-12 06:55:44
○NSns2.itcom21.com2007-11-06 → 2007-11-06 · 3 obs
○ 2015-07-20 23:05:52
○ 2026-05-12 06:55:44
○NSsdi01.h-ix.jp2007-11-06 → 2007-11-06 · 3 obs
○ 2015-07-20 23:05:52
○ 2026-05-12 06:55:44
●MXmx.securemx.jp2015-07-20 → 2026-05-12 · 3 obs
● 2015-07-20 23:05:52
● 2026-05-12 06:55:44
○MXns.itcom21.com2007-11-06 → 2007-11-06 · 3 obs
○ 2015-07-20 23:05:52
○ 2026-05-12 06:55:44
○MXns2.itcom21.com2007-11-06 → 2007-11-06 · 3 obs
○ 2015-07-20 23:05:52
○ 2026-05-12 06:55:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| itcom21.com | ns017-p3f9sk5npcu30u1r.p.d-53.info, ns017-p3f9sk5npcu30u1r.p.d-53.jp, ns017-p3f9sk5npcu30u1r.p.d-53.org | - |
✅ Authoritative Response
Server:210.138.20.108
NS records: ns017-p3f9sk5npcu30u1r.p.d-53.info, ns017-p3f9sk5npcu30u1r.p.d-53.jp, ns017-p3f9sk5npcu30u1r.p.d-53.org
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1139ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 3 | ns017-p3f9sk5npcu30u1r.p.d-53.info, ns017-p3f9sk5npcu30u1r.p.d-53.jp... |
| MX | 1 | mx.securemx.jp (pri: 600) |
| TXT | 2 | v=spf1 include:spf.securemx.jp include:_, google-site-verification=Mebx_P2kb8P0FBW |
| SOA | 1 | ns000.d-53.net dns-managers.iij.ad.jp |
Analysis
Hierarchy
itcom21.com is a parent of swg-proxy.itcom21.com, ns.itcom21.com and ns2.itcom21.com.
Name Servers
itcom21.com is delegated to four name servers: ns000.d-53.net, ns017-p3f9sk5npcu30u1r.p.d-53.info, ns017-p3f9sk5npcu30u1r.p.d-53.jp and ns017-p3f9sk5npcu30u1r.p.d-53.org.
itcom21.com at least partially shares name servers with other domains, for instance grasphere.com, gakkai-web.net, 48a.222.15.211.in-addr.arpa, swgw.jp and aeon-laketown.jp.
These name servers are commonly used with dns-b.iij.ad.jp, dns-c.iij.ad.jp, ns01.iij-dns.jp, ns00.iij-dns.net, rev.iij-dns.jp, rev.iij-dns.net, ns.iij-dns.biz, ns.iij-dns.jp and ns.iij-dns.net.
Host ns017-p3f9sk5npcu30u1r.p.d-53.info points to 2001:240:bb81::28:48 and 202.32.219.48; Host ns017-p3f9sk5npcu30u1r.p.d-53.jp points to 2001:240:bb81::29:1108 and 203.180.146.108; Host ns017-p3f9sk5npcu30u1r.p.d-53.org points to 2001:240:bb81::29:108 and 210.138.20.108.
Mail Servers
itcom21.com is handled by a single mail server, mx.securemx.jp.
The mail server setup for itcom21.com matches that of other domains, for instance bzcml01.biznet.co.jp, atomix.co.jp, hcc.co.jp, azabunougeka.or.jp and b-ch.com.
itcom21.com shares at least partially some mail servers with other domains, including aion-kk.co.jp, kohwa.biz, cherry-c.co.jp, hokurikuticket.com and witc.co.jp.
these mail servers are commonly used together with mx6.securemx.jp.
The host name mx.securemx.jp has four IP numbers: 210.130.202.92, 210.130.202.93, 210.130.202.96 and 210.130.202.99.