alfa-kobo.com - robtex.com
alfa-kobo.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=1784403637 | ||||||
MX for
alfa-kobo.com |
Subdomains
www.alfa-kobo.com |
Same first word
alfa-kobo.com |
DNS History
11 records (7 active, 4 former)
○NSdns01.biwalobe.jp2015-06-23 → 2018-12-05 · 4 obs
● 2018-12-05 10:50:02
○ 2026-02-20 03:49:08
○ 2026-07-18 19:54:46
○NSdns02.biwalobe.jp2015-06-23 → 2018-12-05 · 4 obs
● 2018-12-05 10:50:02
○ 2026-02-20 03:49:08
○ 2026-07-18 19:54:46
●NSns1.xserver.jp2026-02-20 → 2026-07-18 · 3 obs
● 2026-02-20 03:49:08
● 2026-07-18 19:54:46
●NSns2.xserver.jp2026-02-20 → 2026-07-18 · 3 obs
● 2026-02-20 03:49:08
● 2026-07-18 19:54:46
●NSns3.xserver.jp2026-02-20 → 2026-07-18 · 3 obs
● 2026-02-20 03:49:08
● 2026-07-18 19:54:46
●NSns4.xserver.jp2026-02-20 → 2026-07-18 · 3 obs
● 2026-02-20 03:49:08
● 2026-07-18 19:54:46
●NSns5.xserver.jp2026-02-20 → 2026-07-18 · 3 obs
● 2026-02-20 03:49:08
● 2026-07-18 19:54:46
●MXalfa-kobo.com2026-02-20 → 2026-07-18 · 3 obs
● 2026-02-20 03:49:08
● 2026-07-18 19:54:46
○MXimx.incl.ne.jp2018-12-05 → 2018-12-05 · 4 obs
● 2018-12-05 10:50:02
○ 2026-02-20 03:49:08
○ 2026-07-18 19:54:46
○MXimx.mail-filter.biwa.ne.jp2015-06-23 → 2017-02-08 · 4 obs
● 2017-02-08 07:55:16
○ 2018-12-05 10:50:02
○ 2026-07-18 19:54:46
●A162.43.122.1112026-02-20 → 2026-07-18 · 2 obs
● 2026-07-18 19:54:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, m.gtld-servers.net, j.gtld-servers.net... | - |
| alfa-kobo.com | ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp... | - |
✅ Authoritative Response
Server:202.226.36.247
NS records: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp, ns5.xserver.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for alfa-kobo.com (unsigned zone)
⏱️ Timing
Total: 2971ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 162.43.122.111 |
| NS | 5 | ns2.xserver.jp, ns1.xserver.jp... |
| MX | 1 | alfa-kobo.com (pri: 0) |
| TXT | 1 | v=spf1 +a:sv14510.xserver.jp +a:alfa-kob |
| SOA | 1 | ns1.xserver.jp root.xserver.jp |
Analysis
Hierarchy
alfa-kobo.com is a parent domain of www.alfa-kobo.com.
Mail Server Role
alfa-kobo.com is listed as a mail server for itself.
IP Addresses
alfa-kobo.com resolves to one IP address: 162.43.122.111.
kouritu-showa.jp, jaeger.co.jp, www.alfa-kobo.com and two other host names share IP numbers with alfa-kobo.com.
Name Servers
alfa-kobo.com has five name servers, which are ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp and two others.
alfa-kobo.com shares at least some of its name servers with other domains, including okane-hosoku.com, frp.sg, threetonestudio.com and two others.
These name servers are frequently paired with the name servers ns4.xserver.jp and ns5.xserver.jp.
Hostnames that resolve to three IP addresses:
ns1.xserver.jp maps to three IP addresses: 202.226.36.164, 202.226.36.170 and 202.226.36.246.
ns4.xserver.jp maps to three IP addresses: 183.90.224.226, 183.90.224.230 and 202.226.39.247.
ns5.xserver.jp maps to three IP addresses: 157.112.182.218, 157.112.182.220 and 202.226.37.247.
Hosts with just one IP address:
ns2.xserver.jp resolves to the IP address 35.72.43.26.
ns3.xserver.jp resolves to the IP address 202.226.36.247.
Mail Servers
Mail for alfa-kobo.com is handled by one mail server — alfa-kobo.com.
alfa-kobo.com resolves to 162.43.122.111 and no other IP number.