grblog.jp - robtex.com
grblog.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 160.16.206.8🇯🇵 SAKURA-B160.16.128.0/17 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan | ||||||
| PTR | tk2-245-32004.vs.sakura.ne.jp | ||||||
| NS | ns1.jp.ricoh.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 133.139.20.51🇯🇵 RICOH133.139.20.0/24 Company, Ltd. X-Keiro: zpg_cinf_const@nts.ricoh.co.jp | ||||||
| PTR | 51.20.139.133.staff.jp.ricoh.com | ||||||
| NS | ns.ricoh.jp ⚠️ Not in zone NS records | ||||||
| A | 133.139.20.51🇯🇵 RICOH133.139.20.0/24 Company, Ltd. X-Keiro: zpg_cinf_const@nts.ricoh.co.jp | ||||||
| PTR | 51.20.139.133.staff.jp.ricoh.com | ||||||
| NS | ns1.ricoh.jp ⚠️ Not in zone NS records | ||||||
| A | 133.139.88.51🇯🇵 RICOH133.139.88.0/24 Company, Ltd. X-Keiro: zpg_cinf_const@nts.ricoh.co.jp | ||||||
| PTR | 51.88.139.133.unics.ricoh.com | ||||||
| NS | ns2.jp.ricoh.com ⚠️ Not in parent delegation | ||||||
| A | 133.139.88.51🇯🇵 RICOH133.139.88.0/24 Company, Ltd. X-Keiro: zpg_cinf_const@nts.ricoh.co.jp | ||||||
| PTR | 51.88.139.133.unics.ricoh.com | ||||||
| MX | mxa-00245801.gslb.pphosted.com ⭐ | ||||||
| A | 205.220.167.178🇺🇸 Proofpoint205.220.167.0/24 Inc. | ||||||
| PTR | mx0a-00245801.pphosted.com | ||||||
| MX | mxb-00245801.gslb.pphosted.com(20) | ||||||
| A | 205.220.179.179🇺🇸 Proofpoint205.220.179.0/24 Inc. | ||||||
| PTR | mx0b-00245801.pphosted.com | ||||||
| SOA | ns1.jp.ricoh.compostmaster@ns1.jp.ricoh.com 2025-05-28 #3 | ||||||
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=1775930403 | ||||||
Subdomains
www.grblog.jp |
Same first word
Similar names
DNS History
10 records (7 active, 3 former)
○NSns.ricoh.co.jp2015-08-20 → 2016-12-13 · 4 obs
● 2016-12-13 20:26:38
○ 2026-03-24 09:50:44
○ 2026-04-11 19:12:02
●NSns1.jp.ricoh.com2026-03-24 → 2026-04-11 · 3 obs
● 2026-03-24 09:50:44
● 2026-04-11 19:12:02
●NSns2.jp.ricoh.com2026-03-24 → 2026-04-11 · 3 obs
● 2026-03-24 09:50:44
● 2026-04-11 19:12:02
○MXmx03.ricoh.co.jp2015-08-20 → 2016-12-13 · 4 obs
● 2016-12-13 20:26:38
○ 2026-03-24 09:50:44
○ 2026-04-11 19:12:02
●MXmxa-00245801.gslb.pphosted.com2026-03-24 → 2026-04-11 · 3 obs
● 2026-03-24 09:50:44
● 2026-04-11 19:12:02
●MXmxb-00245801.gslb.pphosted.com2026-03-24 → 2026-04-11 · 3 obs
● 2026-03-24 09:50:44
● 2026-04-11 19:12:02
○A133.139.28.212015-08-20 → 2016-12-13 · 4 obs
● 2016-12-13 20:26:38
○ 2026-03-24 09:50:44
○ 2026-04-11 19:12:02
●A160.16.206.82026-03-24 → 2026-04-11 · 3 obs
● 2026-03-24 09:50:44
● 2026-04-11 19:12:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | d.dns.jp, a.dns.jp, f.dns.jp, h.dns.jp... | - |
| grblog.jp | ns.ricoh.jp, ns1.ricoh.jp | - |
✅ Authoritative Response
Server:133.139.20.51
NS records: ns.ricoh.jp, ns1.ricoh.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for grblog.jp (unsigned zone)
⏱️ Timing
Total: 1246ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 160.16.206.8 |
| NS | 2 | ns1.jp.ricoh.com, ns2.jp.ricoh.com |
| MX | 2 | mxb-00245801.gslb.pphosted.com (pri: 20), mxa-00245801.gslb.pphosted.com (pri: 10) |
| SOA | 1 | ns1.jp.ricoh.com postmaster.ns1.jp.ricoh |
Analysis
Hierarchy
grblog.jp is the parent of www.grblog.jp.
IP Addresses
grblog.jp resolves to one IP number: 160.16.206.8.
Other host names such as www.grblog.jp and tk2-245-32004.vs.sakura.ne.jp share IP numbers with grblog.jp.
Name Servers
grblog.jp is delegated to four name servers: ns1.ricoh.jp, ns.ricoh.jp, ns1.jp.ricoh.com and ns2.jp.ricoh.com.
grblog.jp at least partially shares name servers with other domains, for instance nts.ricoh.co.jp, ac-ricoh.jp, ricoh-japan.co.jp, notes.ricoh.co.jp and rex.grp.ricoh.co.jp.
these name servers are commonly used alongside name.ricoh.co.jp.
Hosts with a single IP
ns1.ricoh.jp points to 133.139.88.51.
ns.ricoh.jp points to 133.139.20.51.
ns1.jp.ricoh.com points to 133.139.20.51.
ns2.jp.ricoh.com points to 133.139.88.51.
Hosts pointing to 133.139.88.51: ns1.ricoh.jp and ns2.jp.ricoh.com.
Hosts pointing to 133.139.20.51: ns.ricoh.jp and ns1.jp.ricoh.com.
Mail Servers
Two mail servers handle grblog.jp: mxa-00245801.gslb.pphosted.com and mxb-00245801.gslb.pphosted.com.
grblog.jp shares the same mail server setup as other domains, for instance wc.ricoh.com, rsi.ricoh.co.jp, okayama.ricoh.co.jp, e-devices.ricoh.co.jp and ishikawa.ricoh.co.jp.
grblog.jp shares some mail servers with other domains, at least partially, for instance saitama.ricoh.co.jp, higashi-shizuoka.ricoh.co.jp, ns01.ricoh.co.jp, zrfg031779.ricoh.co.jp and testpc.ricoh.co.jp.
Host names with one IP number: