first-roof.com - robtex.com
first-roof.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 203.183.70.243🇯🇵 IDC203.183.64.0/19 Frontier Inc. | ||||||
| NS | 01.dnsv.jp ⭐ | ||||||
| A | 2400:8500:3300::53🇯🇵 GMO-DNS2400:8500:3300::/48 GMO Internet,inc. | ||||||
| PTR | 01.dnsv.jp | ||||||
| A | 157.7.32.53🇯🇵 GMO-DNS157.7.32.0/24 GMO Internet,inc. Network-Team. | ||||||
| PTR | 01.dnsv.jp | ||||||
| NS | 02.dnsv.jp | ||||||
| A | 157.7.33.53🇯🇵 GMO-DNS157.7.33.0/24 GMO Internet,inc. Network-Team. | ||||||
| PTR | 02.dnsv.jp | ||||||
| NS | 03.dnsv.jp | ||||||
| A | 2400:8500:3000::53🇯🇵 GMO-DNS2400:8500:3000::/48 GMO Internet,inc. | ||||||
| PTR | 03.dnsv.jp | ||||||
| A | 157.7.34.53🇯🇵 GMO-DNS157.7.34.0/24 GMO Internet,inc. Network-Team. | ||||||
| PTR | 03.dnsv.jp | ||||||
| NS | 04.dnsv.jp | ||||||
| A | 2400:8500:3fff::53🇯🇵 GMO-DNS2400:8500:3fff::/48 GMO Internet,inc. | ||||||
| PTR | 04.dnsv.jp | ||||||
| A | 157.7.35.53🇯🇵 GMO-DNS157.7.35.0/24 GMO Internet,inc. Network-Team. | ||||||
| PTR | 04.dnsv.jp | ||||||
| MX | mail.first-roof.com ⭐ | ||||||
| A | 203.183.70.243🇯🇵 IDC203.183.64.0/19 Frontier Inc. | ||||||
| TXT | v=spf1 +a +mx +a:sv01.icu.co.jp -all | ||||||
| SOA | 01.dnsv.jphostmaster@dnsv.jp serial=1721787609 | ||||||
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=1776115597 | ||||||
Subdomains
mail.first-roof.com |
Same first word
first-roof.com |
first-roof.ru |
DNS History
6 records (6 active, 0 former)
●MXmail.first-roof.com2026-02-20 → 2026-04-13 · 2 obs
● 2026-04-13 21:36:22
●A203.183.70.2432026-02-20 → 2026-04-13 · 2 obs
● 2026-04-13 21:36:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| first-roof.com | 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp, 04.dnsv.jp | - |
✅ Authoritative Response
Server:157.7.35.53
NS records: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp, 04.dnsv.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for first-roof.com (unsigned zone)
⏱️ Timing
Total: 1063ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 203.183.70.243 |
| NS | 4 | 01.dnsv.jp, 02.dnsv.jp... |
| MX | 1 | mail.first-roof.com (pri: 10) |
| TXT | 1 | v=spf1 +a +mx +a:sv01.icu.co.jp -all |
| SOA | 1 | 01.dnsv.jp hostmaster.dnsv.jp |
Analysis
Hierarchy
first-roof.com is the parent of mail.first-roof.com.
IP Addresses
first-roof.com resolves to one IP number: 203.183.70.243.
other host names including mail.ujiden-net.co.jp, mail.hokuryo-kg.com, mail.kochiben.or.jp, ujiden-net.co.jp and kochiben.or.jp share IP numbers with first-roof.com.
Name Servers
first-roof.com is delegated to four name servers: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp and 04.dnsv.jp.
first-roof.com at least partially shares name servers with other domains, for instance double-company.site, midlands.jp, shiire.com, gmf-jp.net and apna.jp.
Host names with two IP numbers:
01.dnsv.jp points to 2400:8500:3300::53 and 157.7.32.53.
03.dnsv.jp points to 2400:8500:3000::53 and 157.7.34.53.
04.dnsv.jp points to 2400:8500:3fff::53 and 157.7.35.53.
Host names with one IP number:
02.dnsv.jp points to 157.7.33.53.
Mail Servers
first-roof.com is handled by a single mail server, mail.first-roof.com.
mail.first-roof.com resolves to IP 203.183.70.243.