f-teku.com - robtex.com
f-teku.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 133.242.249.147🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| PTR | www4207.sakura.ne.jp | ||||||
| NS | master.dns.ne.jp ⭐ | ||||||
| A | 210.224.172.18🇯🇵 SAKURA-C210.224.160.0/19 (1/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | master.dns.ne.jp | ||||||
| NS | ns1.dns.ne.jp | ||||||
| A | 61.211.236.1🇯🇵 SAKURA-B61.211.236.0/24 (4/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | ns1.dns.ne.jp | ||||||
| NS | ns2.dns.ne.jp | ||||||
| A | 133.167.21.1🇯🇵 SAKURA-C133.167.21.0/24 (OSAKA) SAKURA Internet // WEST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan | ||||||
| PTR | ns2.dns.ne.jp | ||||||
| MX | f-teku.com ⭐ | ||||||
| A | 133.242.249.147🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| PTR | www4207.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www4207.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2023-05-16 #0 | ||||||
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=1778793506 | ||||||
MX for
f-teku.com |
Same first word
f-teku.com |
Similar names
DNS History
9 records (5 active, 4 former)
●NSmaster.dns.ne.jp2026-02-15 → 2026-05-14 · 3 obs
● 2026-02-15 15:04:14
● 2026-05-14 21:23:48
●NSns1.dns.ne.jp2026-02-15 → 2026-05-14 · 3 obs
● 2026-02-15 15:04:14
● 2026-05-14 21:23:48
○NSns11.value-domain.com2018-06-26 → 2018-06-26 · 3 obs
○ 2026-02-15 15:04:14
○ 2026-05-14 21:23:48
○NSns12.value-domain.com2018-06-26 → 2018-06-26 · 3 obs
○ 2026-02-15 15:04:14
○ 2026-05-14 21:23:48
○NSns13.value-domain.com2018-06-26 → 2018-06-26 · 3 obs
○ 2026-02-15 15:04:14
○ 2026-05-14 21:23:48
●NSns2.dns.ne.jp2026-02-15 → 2026-05-14 · 3 obs
● 2026-02-15 15:04:14
● 2026-05-14 21:23:48
●MXf-teku.com2018-06-26 → 2026-05-14 · 2 obs
● 2026-05-14 21:23:48
●A133.242.249.1472026-02-15 → 2026-05-14 · 3 obs
● 2026-02-15 15:04:14
● 2026-05-14 21:23:48
○A202.172.26.412018-06-26 → 2018-06-26 · 3 obs
○ 2026-02-15 15:04:14
○ 2026-05-14 21:23:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | i.gtld-servers.net, e.gtld-servers.net, d.gtld-servers.net, m.gtld-servers.net... | - |
| f-teku.com | ns1.dns.ne.jp, ns2.dns.ne.jp | - |
✅ Authoritative Response
Server:133.167.21.1
NS records: ns1.dns.ne.jp, ns2.dns.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for f-teku.com (unsigned zone)
⏱️ Timing
Total: 990ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 133.242.249.147 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | f-teku.com (pri: 10) |
| TXT | 1 | v=spf1 a:www4207.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
Analysis
Mail Server Role
f-teku.com serves as the mail server for f-teku.com.
IP Addresses
f-teku.com resolves to a single IP address: 133.242.249.147.
Other host names including community-consulting.co.jp, pens-alley.jp, kikyu.org, sougodg.co.jp and shinkano.com share IP numbers with f-teku.com.
Name Servers
f-teku.com is delegated to three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
f-teku.com at least partially shares name servers with other domains, including prim-rose.net, kairakuen.net, danssachambre.sakura.ne.jp, shinomy.com and l-s-d.sakura.ne.jp.
These name servers are often used together with dns.sakura.ad.jp.
Hostnames with a single IP:
master.dns.ne.jp points to: 210.224.172.18.
ns1.dns.ne.jp points to: 61.211.236.1.
ns2.dns.ne.jp points to: 133.167.21.1.
Mail Servers
A single mail server handles f-teku.com.
f-teku.com points to a single IP: 133.242.249.147.