rf.st - robtex.com
rf.st
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.49.141.34🇯🇵 BPS103.49.140.0/22 Inc. X-keiro : noc@bps-net.jp | ||||||
| NS | ns1.zent.net ⭐ | ||||||
| A | 103.49.141.34🇯🇵 BPS103.49.140.0/22 Inc. X-keiro : noc@bps-net.jp | ||||||
| NS | ns2.zent.net | ||||||
| A | 210.253.210.211🇯🇵 iTSCOM210.253.208.0/20 .net its communications Inc. 541-1 Ichigao-chou, Aoba-ku Yokohama-shi, Kanagawa 225-0024 Japan | ||||||
| NS | ns3.zent.net | ||||||
| A | 103.49.141.41🇯🇵 BPS103.49.140.0/22 Inc. X-keiro : noc@bps-net.jp | ||||||
| NS | ns4.zent.net | ||||||
| A | 210.253.210.215🇯🇵 iTSCOM210.253.208.0/20 .net its communications Inc. 541-1 Ichigao-chou, Aoba-ku Yokohama-shi, Kanagawa 225-0024 Japan | ||||||
| MX | rf.st ⭐ | ||||||
| A | 103.49.141.34🇯🇵 BPS103.49.140.0/22 Inc. X-keiro : noc@bps-net.jp | ||||||
| TXT | v=spf1 ip4:103.49.141.34 +a +mx ~all | ||||||
| SOA | ns1.zent.netap@hostmycgi.com 2026-04-17 #1 | ||||||
st
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.bahnhof.net ⭐ ⚠️ Not in parent delegation | ||||||
| NS | dns-st.bahnhof.net ⚠️ Not in parent delegation | ||||||
| NS | southeast-2.dns-au.st | ||||||
| NS | west-2.dns-us.st | ||||||
| SOA | ns1.bahnhof.nethostmaster@nic.st serial=2511375841 | ||||||
MX for
rf.st |
Same first word
Similar names
DNS History
9 records (6 active, 3 former)
○NSns1.zent.ne.jp2015-08-26 → 2017-09-26 · 4 obs
● 2017-09-26 08:26:38
○ 2019-07-26 01:05:04
○ 2026-05-01 22:42:52
●NSns1.zent.net2019-07-26 → 2026-05-01 · 3 obs
● 2019-07-26 01:05:04
● 2026-05-01 22:42:52
○NSns2.zent.ne.jp2015-08-26 → 2017-09-26 · 4 obs
● 2017-09-26 08:26:38
○ 2019-07-26 01:05:04
○ 2026-05-01 22:42:52
●NSns2.zent.net2019-07-26 → 2026-05-01 · 3 obs
● 2019-07-26 01:05:04
● 2026-05-01 22:42:52
●NSns3.zent.net2019-07-26 → 2026-05-01 · 3 obs
● 2019-07-26 01:05:04
● 2026-05-01 22:42:52
●NSns4.zent.net2019-07-26 → 2026-05-01 · 3 obs
● 2019-07-26 01:05:04
● 2026-05-01 22:42:52
●MXrf.st2015-08-26 → 2026-05-01 · 2 obs
● 2026-05-01 22:42:52
●A103.49.141.342019-07-26 → 2026-05-01 · 3 obs
● 2019-07-26 01:05:04
● 2026-05-01 22:42:52
○A210.253.210.2092015-08-26 → 2017-09-26 · 4 obs
● 2017-09-26 08:26:38
○ 2019-07-26 01:05:04
○ 2026-05-01 22:42:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| st | southeast-2.dns-au.st, dns-st.bahnhof.net, ns1.bahnhof.net, west-2.dns-us.st | 8 records |
| rf.st | ns1.zent.net, ns4.zent.net, ns3.zent.net, ns2.zent.net | - |
✅ Authoritative Response
Server:210.253.210.211
NS records: ns1.zent.net, ns4.zent.net, ns3.zent.net, ns2.zent.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for st (unsigned zone)
⏱️ Timing
Total: 1152ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.49.141.34 |
| NS | 4 | ns2.zent.net, ns3.zent.net... |
| MX | 1 | rf.st (pri: 0) |
| TXT | 1 | v=spf1 ip4:103.49.141.34 +a +mx ~all |
| SOA | 1 | ns1.zent.net ap.hostmycgi.com |
📌 Glue Records Collected
Total: 8
In-bailiwick: 4 (southeast-2.dns-au.st, southeast-2.dns-au.st, west-2.dns-us.st...)
Out-of-bailiwick: 4 (dns-st.bahnhof.net, dns-st.bahnhof.net, ns1.bahnhof.net...)
Analysis
Mail Server Role
For rf.st, the mail server is rf.st.
IP Addresses
rf.st points to a single IP number: 103.49.141.34.
other host names for instance akihabara.maricar.com, ryu.ms, mail.kart.st, demo-server.jp and ssl.zent.ne.jp share IP numbers with rf.st.
Name Servers
rf.st is delegated to four name servers: ns1.zent.net, ns2.zent.net, ns3.zent.net and ns4.zent.net.
rf.st at least partially shares name servers with other domains, for instance maricar.jp, idpic.net, gotenyama.jp, satoh-takao.com and aza.jp.
These name servers are commonly used with ns1.zent.ne.jp, ns2.zent.ne.jp, ns3.zent.ne.jp and ns4.zent.ne.jp.
Host names with one IP number:
ns1.zent.net points to 103.49.141.34
ns2.zent.net points to 210.253.210.211
ns3.zent.net points to 103.49.141.41
ns4.zent.net points to 210.253.210.215
Mail Servers
One mail server handles rf.st.
Host name rf.st points to IP address 103.49.141.34.