izumi-math.jp - robtex.com
izumi-math.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 153.123.7.69🇯🇵 AS131921153.123.6.0/23 GMO GlobalSign Holdings K.K. | ||||||
| PTR | sv104.wadax-sv.jp | ||||||
| NS | sv104.wadax-sv.jp ⭐ | ||||||
| A | 153.123.7.69🇯🇵 AS131921153.123.6.0/23 GMO GlobalSign Holdings K.K. | ||||||
| PTR | sv104.wadax-sv.jp | ||||||
| NS | nssv101.wadax-sv.jp | ||||||
| A | 202.234.155.198🇯🇵 IDC202.234.155.0/24 Frontier Inc. | ||||||
| MX | sva101.wadax-sv.jp ⭐ | ||||||
| A | 153.123.7.18🇯🇵 AS131921153.123.6.0/23 GMO GlobalSign Holdings K.K. | ||||||
| PTR | sva101.wadax-sv.jp | ||||||
| TXT | v=spf1 +ip4:153.123.7.69 +include:_spf-sd.wadax-sv.jp ~all | ||||||
| SOA | sv104.wadax-sv.jppostmaster@izumi-math.jp 2023-09-25 #2 | ||||||
jp
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | z.dns.jp ⭐ | ||||||
| NS | a.dns.jp | ||||||
| NS | b.dns.jp | ||||||
| NS | c.dns.jp | ||||||
| NS | d.dns.jp | ||||||
| NS | e.dns.jp | ||||||
| NS | f.dns.jp | ||||||
| NS | g.dns.jp | ||||||
| NS | h.dns.jp | ||||||
| SOA | z.dns.jproot@dns.jp serial=1778654703 | ||||||
Previously NS for
Subdomains
www.izumi-math.jp |
Same first word
izumi-math.jp |
DNS History
9 records (4 active, 5 former)
○NSdns2.wadax.ne.jp2015-08-18 → 2017-07-08 · 4 obs
● 2017-07-08 03:39:54
○ 2026-03-04 10:48:24
○ 2026-05-13 07:14:00
○NSizumi-math.jp2015-08-18 → 2017-07-08 · 4 obs
● 2017-07-08 03:39:54
○ 2026-03-04 10:48:24
○ 2026-05-13 07:14:00
●NSnssv101.wadax-sv.jp2026-03-04 → 2026-05-13 · 3 obs
● 2026-03-04 10:48:24
● 2026-05-13 07:14:00
●NSsv104.wadax-sv.jp2026-03-04 → 2026-05-13 · 3 obs
● 2026-03-04 10:48:24
● 2026-05-13 07:14:00
○NSsv56.wadax.ne.jp2015-08-18 → 2017-07-08 · 4 obs
● 2017-07-08 03:39:54
○ 2026-03-04 10:48:24
○ 2026-05-13 07:14:00
○MXah12.wadax.ne.jp2015-08-18 → 2017-07-08 · 4 obs
● 2017-07-08 03:39:54
○ 2026-03-04 10:48:24
○ 2026-05-13 07:14:00
●MXsva101.wadax-sv.jp2026-03-04 → 2026-05-13 · 3 obs
● 2026-03-04 10:48:24
● 2026-05-13 07:14:00
●A153.123.7.692026-03-04 → 2026-05-13 · 3 obs
● 2026-03-04 10:48:24
● 2026-05-13 07:14:00
○A211.133.134.1062015-08-18 → 2017-07-08 · 4 obs
● 2017-07-08 03:39:54
○ 2026-03-04 10:48:24
○ 2026-05-13 07:14:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | c.dns.jp, h.dns.jp, e.dns.jp, g.dns.jp... | - |
| izumi-math.jp | sv104.wadax-sv.jp, nssv101.wadax-sv.jp | - |
✅ Authoritative Response
Server:202.234.155.198
NS records: sv104.wadax-sv.jp, nssv101.wadax-sv.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for izumi-math.jp (unsigned zone)
⏱️ Timing
Total: 997ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 153.123.7.69 |
| NS | 2 | nssv101.wadax-sv.jp, sv104.wadax-sv.jp |
| MX | 1 | sva101.wadax-sv.jp (pri: 10) |
| TXT | 1 | v=spf1 +ip4:153.123.7.69 +include:_spf-s |
| SOA | 1 | sv104.wadax-sv.jp postmaster.izumi-math. |
Analysis
Hierarchy
izumi-math.jp is the parent of www.izumi-math.jp.
IP Addresses
izumi-math.jp resolves to a single IP address: 153.123.7.69.
Other host names including ns-gf.com, kawadamodel.co.jp, ksuke.org, lancah.com and adachidenki.co.jp share IP numbers with izumi-math.jp.
Name Servers
izumi-math.jp's delegation uses two name servers, nssv101.wadax-sv.jp and sv104.wadax-sv.jp.
izumi-math.jp shares the same name server setup as other domains, for example lancah.com, adachidenki.co.jp, hitattack.co.jp, 78ym.com and f-museum.jp.
izumi-math.jp at least partially shares name servers with other domains, including faha.biz, frisbeedog.co.jp, e-sasaki-web.com, shonai-nippo.co.jp and glovekarate.jp.
These name servers are typically used together with the name servers sv105.wadax-sv.jp, sv112.wadax-sv.jp, sv122.wadax-sv.jp, sv102.wadax-sv.jp, sv123.wadax-sv.jp, sv113.wadax-sv.jp, sv125.wadax-sv.jp, sv119.wadax-sv.jp, sv111.wadax-sv.jp and sv118.wadax-sv.jp.
Host names with a single IP:
nssv101.wadax-sv.jp points to 202.234.155.198.
sv104.wadax-sv.jp points to 153.123.7.69.
Mail Servers
izumi-math.jp is handled by a single mail server, sva101.wadax-sv.jp.
izumi-math.jp shares its mail server setup with other domains, including c-ig.jp, geosites-hokkaido.org, hidatakayama.co.jp, osh-law.jp and gladv.co.jp.
The mail servers for izumi-math.jp are shared with other domains, for instance eneres.co.jp, bright-trading.com, bellissimo.co.jp, peruchan.com and ng2.net.
sva101.wadax-sv.jp points to a single IP: 153.123.7.18.