20170517.com - robtex.com
20170517.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | 20170517.com ⭐ | ||||||
| NS | dnss10.so-net.ne.jp | ||||||
| A | 210.139.255.1🇯🇵 So-net210.139.128.0/17 Sony Network Communications Inc. | ||||||
| PTR | dnss10.so-net.ne.jp | ||||||
| NS | dnss11.so-net.ne.jp | ||||||
| A | 210.139.255.17🇯🇵 So-net210.139.128.0/17 Sony Network Communications Inc. | ||||||
| PTR | dnss11.so-net.ne.jp | ||||||
| MX | sonet-common-mx.xspmail.jp ⭐ | ||||||
| A | 2001:240:bb81:94:160:13:60:174🇯🇵 IIJ-AS2001:240::/32 IIJ IPv6 BLOCK ( AS2497 ) | ||||||
| A | 160.13.60.174🇯🇵 IIJ-AS160.13.0.0/16 IIJ IPv4 BLOCK ( AS2497 ) | ||||||
| PTR | sonet-common-mx.xspmail.jp | ||||||
| TXT | v=spf1 +include:plusdomain.spf.so-net.ne.jp ~all | ||||||
| SOA | 20170517.comhostmaster@20170517.com serial=2602171610 | ||||||
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=1785802652 | ||||||
NS for
20170517.com |
Same first word
20170517.com |
Similar names
DNS History
5 records (4 active, 1 former)
●NS20170517.com2017-05-09 → 2026-08-04 · 2 obs
● 2026-08-04 00:31:22
●NSdnss10.so-net.ne.jp2017-05-09 → 2026-08-04 · 2 obs
● 2026-08-04 00:31:22
●NSdnss11.so-net.ne.jp2017-05-09 → 2026-08-04 · 2 obs
● 2026-08-04 00:31:22
○MXmxpin.ms.so-net.ne.jp2017-05-09 → 2017-05-09 · 3 obs
○ 2026-05-13 08:26:44
○ 2026-08-04 00:31:22
●MXsonet-common-mx.xspmail.jp2026-05-13 → 2026-08-04 · 3 obs
● 2026-05-13 08:26:44
● 2026-08-04 00:31:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 20170517.com | dnss10.so-net.ne.jp, dnss11.so-net.ne.jp | - |
✅ Authoritative Response
Server:210.139.255.1
NS records: dnss10.so-net.ne.jp, dnss11.so-net.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 20170517.com (unsigned zone)
⏱️ Timing
Total: 1022ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dnss10.so-net.ne.jp, dnss11.so-net.ne.jp |
| MX | 1 | sonet-common-mx.xspmail.jp (pri: 10) |
| TXT | 1 | v=spf1 +include:plusdomain.spf.so-net.ne |
| SOA | 1 | 20170517.com hostmaster.20170517.com |
Analysis
Name Server Role
20170517.com serves as a name server for itself — 20170517.com is its own authoritative name server.
dnss11.so-net.ne.jp, dnss10.so-net.ne.jp and 20170517.com regularly act as name servers together.
Name Servers
20170517.com has three authoritative name servers: 20170517.com, dnss10.so-net.ne.jp and dnss11.so-net.ne.jp.
20170517.com partially shares its NS delegation with several other domains, including funtostaff.com, sansei-office.co.jp, studio07.co.jp and two others.
dnss10.so-net.ne.jp resolves to 210.139.255.1. dnss11.so-net.ne.jp resolves to 210.139.255.17. Both host names point to a single IP number.
Mail Servers
20170517.com has one mail server: sonet-common-mx.xspmail.jp.
20170517.com shares the same mail server setup as other domains, including tojofamily.com, ne-next.com, t-surv.net and two others.
20170517.com shares mail servers — at least in part — with other domains, including tsuji-law.jp, lastingever.com, kohno-kk.com and two others.
The host sonet-common-mx.xspmail.jp resolves to 160.13.60.174 and 2001:240:bb81:94:160:13:60:174 — two IP addresses.