math-oit.org - robtex.com
math-oit.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 112.78.112.12🇯🇵 SAKURA-C112.78.112.0/20 (4/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www1702.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 | math-oit.org ⭐ | ||||||
| A | 112.78.112.12🇯🇵 SAKURA-C112.78.112.0/20 (4/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www1702.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www1702.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2018-12-04 #12 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1773551953 | ||||||
MX for
math-oit.org |
Same first word
math-oit.org |
DNS History
5 records (5 active, 0 former)
●MXmath-oit.org2026-02-19 → 2026-03-19 · 2 obs
● 2026-03-19 10:14:56
●A112.78.112.122026-02-19 → 2026-03-19 · 2 obs
● 2026-03-19 10:14:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b2.org.afilias-nst.org, b0.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| math-oit.org | ns1.dns.ne.jp, ns2.dns.ne.jp | - |
✅ Authoritative Response
Server: 61.211.236.1
NS records: ns1.dns.ne.jp, ns2.dns.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for math-oit.org (unsigned zone)
⏱️ Timing
Total: 1339ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 112.78.112.12 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | math-oit.org (pri: 10) |
| TXT | 1 | v=spf1 a:www1702.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
Analysis
Mail Server Role
For math-oit.org, the mail server is math-oit.org.
IP Addresses
math-oit.org resolves to one IP number: 112.78.112.12.
other host names including k-tik.com, kaz-d-office.com, hanachan62jp.sakura.ne.jp, dining-zaion.com and imglab-inc.com share IP numbers with math-oit.org.
Name Servers
math-oit.org is delegated to three name servers master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
math-oit.org at least partially shares name servers with other domains, for instance kaido-nagasaki.com, dtm-navi.com, racing-tosho.com, estasi.jp and 240.188.210.in-addr.arpa.
Host names with one IP number: 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
math-oit.org is served by a single mail server, math-oit.org.
math-oit.org resolves to IP 112.78.112.12.