b2oa.com - dns.ninja
b2oa.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 112.78.125.217🇯🇵 SAKURA-C112.78.112.0/20 (4/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www2377.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 | b2oa.com ⭐ | ||||||
| A | 112.78.125.217🇯🇵 SAKURA-C112.78.112.0/20 (4/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www2377.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www2377.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2025-08-20 #16 | ||||||
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=1782788116 | ||||||
MX for
b2oa.com |
Same first word
b2oa.com |
Similar names
2bao.com |
2bao.net |
bo2a.com |
a2ob.de |
boa2.com |
ab2o.fr |
aob2.it |
abo2.com |
a2bo.de |
ao2b.fr |
ao2b.com |
ob2a.fr |
bao2.cn |
oba2.ru |
abo2.de |
ba2o.pro |
2bao.org |
ao2b.eu |
DNS History
17 records (5 active, 12 former)
●NSmaster.dns.ne.jp2026-03-13 → 2026-06-30 · 3 obs
○ 2017-06-11 12:41:38
● 2026-03-13 23:15:50
● 2026-06-30 03:17:26
● 2026-03-13 23:15:50
● 2026-06-30 03:17:26
○NSns1.beaverserver.com2016-11-26 → 2017-06-11 · 5 obs
○ 2016-04-08 08:14:50
● 2016-11-26 16:19:30
● 2017-06-11 12:41:38
○ 2026-03-13 23:15:50
○ 2026-06-30 03:17:26
● 2016-11-26 16:19:30
● 2017-06-11 12:41:38
○ 2026-03-13 23:15:50
○ 2026-06-30 03:17:26
●NSns1.dns.ne.jp2026-03-13 → 2026-06-30 · 3 obs
○ 2017-06-11 12:41:38
● 2026-03-13 23:15:50
● 2026-06-30 03:17:26
● 2026-03-13 23:15:50
● 2026-06-30 03:17:26
○NSns1.sedoparking.com2016-04-08 → 2016-04-08 · 4 obs
○ 2016-01-21 07:26:14
● 2016-04-08 08:14:50
○ 2016-11-26 16:19:30
○ 2026-06-30 03:17:26
● 2016-04-08 08:14:50
○ 2016-11-26 16:19:30
○ 2026-06-30 03:17:26
○NSns2.beaverserver.com2016-11-26 → 2017-06-11 · 5 obs
○ 2016-04-08 08:14:50
● 2016-11-26 16:19:30
● 2017-06-11 12:41:38
○ 2026-03-13 23:15:50
○ 2026-06-30 03:17:26
● 2016-11-26 16:19:30
● 2017-06-11 12:41:38
○ 2026-03-13 23:15:50
○ 2026-06-30 03:17:26
●NSns2.dns.ne.jp2026-03-13 → 2026-06-30 · 3 obs
○ 2017-06-11 12:41:38
● 2026-03-13 23:15:50
● 2026-06-30 03:17:26
● 2026-03-13 23:15:50
● 2026-06-30 03:17:26
○NSns2.sedoparking.com2016-04-08 → 2016-04-08 · 4 obs
○ 2016-01-21 07:26:14
● 2016-04-08 08:14:50
○ 2016-11-26 16:19:30
○ 2026-06-30 03:17:26
● 2016-04-08 08:14:50
○ 2016-11-26 16:19:30
○ 2026-06-30 03:17:26
○NSns29.domaincontrol.com2015-06-27 → 2015-11-04 · 4 obs
● 2015-06-27 15:06:02
● 2015-11-04 12:08:22
○ 2016-01-21 07:26:14
○ 2026-06-30 03:17:26
● 2015-11-04 12:08:22
○ 2016-01-21 07:26:14
○ 2026-06-30 03:17:26
○NSns30.domaincontrol.com2015-06-27 → 2015-11-04 · 4 obs
● 2015-06-27 15:06:02
● 2015-11-04 12:08:22
○ 2016-01-21 07:26:14
○ 2026-06-30 03:17:26
● 2015-11-04 12:08:22
○ 2016-01-21 07:26:14
○ 2026-06-30 03:17:26
●MXb2oa.com2026-03-13 → 2026-06-30 · 3 obs
○ 2016-11-26 16:19:30
● 2026-03-13 23:15:50
● 2026-06-30 03:17:26
● 2026-03-13 23:15:50
● 2026-06-30 03:17:26
○MXb2oa.com.inbound10.mxlogic.net2015-06-27 → 2015-11-04 · 4 obs
● 2015-06-27 15:06:02
● 2015-11-04 12:08:22
○ 2016-01-21 07:26:14
○ 2026-06-30 03:17:26
● 2015-11-04 12:08:22
○ 2016-01-21 07:26:14
○ 2026-06-30 03:17:26
○MXb2oa.com.inbound10.mxlogicmx.net2015-06-27 → 2015-11-04 · 4 obs
● 2015-06-27 15:06:02
● 2015-11-04 12:08:22
○ 2016-01-21 07:26:14
○ 2026-06-30 03:17:26
● 2015-11-04 12:08:22
○ 2016-01-21 07:26:14
○ 2026-06-30 03:17:26
○MXmail.nickstel.com2016-04-08 → 2016-04-08 · 4 obs
○ 2016-01-21 07:26:14
● 2016-04-08 08:14:50
○ 2016-11-26 16:19:30
○ 2026-06-30 03:17:26
● 2016-04-08 08:14:50
○ 2016-11-26 16:19:30
○ 2026-06-30 03:17:26
●A112.78.125.2172026-03-13 → 2026-06-30 · 3 obs
○ 2017-06-11 12:41:38
● 2026-03-13 23:15:50
● 2026-06-30 03:17:26
● 2026-03-13 23:15:50
● 2026-06-30 03:17:26
○A153.126.132.442016-11-26 → 2017-06-11 · 5 obs
○ 2016-04-08 08:14:50
● 2016-11-26 16:19:30
● 2017-06-11 12:41:38
○ 2026-03-13 23:15:50
○ 2026-06-30 03:17:26
● 2016-11-26 16:19:30
● 2017-06-11 12:41:38
○ 2026-03-13 23:15:50
○ 2026-06-30 03:17:26
○A50.63.202.112015-06-27 → 2015-11-04 · 4 obs
● 2015-06-27 15:06:02
● 2015-11-04 12:08:22
○ 2016-01-21 07:26:14
○ 2026-06-30 03:17:26
● 2015-11-04 12:08:22
○ 2016-01-21 07:26:14
○ 2026-06-30 03:17:26
○A72.52.4.912016-04-08 → 2016-04-08 · 4 obs
○ 2016-01-21 07:26:14
● 2016-04-08 08:14:50
○ 2016-11-26 16:19:30
○ 2026-06-30 03:17:26
● 2016-04-08 08:14:50
○ 2016-11-26 16:19:30
○ 2026-06-30 03:17:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | c.gtld-servers.net, k.gtld-servers.net, h.gtld-servers.net, e.gtld-servers.net... | - |
| b2oa.com | 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 b2oa.com (unsigned zone)
⏱️ Timing
Total: 1601ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 112.78.125.217 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | b2oa.com (pri: 10) |
| TXT | 1 | v=spf1 a:www2377.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
Analysis
Mail Server Role
The MX record for b2oa.com points back to b2oa.com — it is its own mail server.
IP Addresses
b2oa.com directs to one IP number, which is 112.78.125.217.
Among the host names that share IP numbers with b2oa.com are thejta.org, efg.jp, enshindo.sakura.ne.jp and two others.
Name Servers
Three name servers are authoritative for b2oa.com: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
At least some of b2oa.com's name servers are shared with other domains, for example s-kon.net, freebell.net, isami.co.jp and two more.
These name servers tend to be used in conjunction with the name servers dns.sakura.ad.jp.
Three hostnames, one IP address apiece: master.dns.ne.jp resolves to 210.224.172.18, ns1.dns.ne.jp resolves to 61.211.236.1 and ns2.dns.ne.jp resolves to 133.167.21.1.
Mail Servers
The MX record for b2oa.com points to a single mail server: b2oa.com.
There is one IP number for b2oa.com: 112.78.125.217.