bookoff.us - robtex.com
bookoff.us
us
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.cctld.us ⭐ | ||||||
| NS | b.cctld.us | ||||||
| NS | f.cctld.us | ||||||
| NS | k.cctld.us | ||||||
| NS | m.cctld.us | ||||||
| NS | n.cctld.us | ||||||
| NS | w.cctld.us | ||||||
| NS | x.cctld.us | ||||||
| NS | y.cctld.us | ||||||
| SOA | a.cctld.usadmin@tldns.godaddy serial=1778100007 | ||||||
Same first word
DNS History
8 records (8 active, 0 former)
●NSns000.d-53.net2026-04-04 → 2026-05-06 · 3 obs
● 2026-04-04 19:45:24
● 2026-05-06 21:07:18
●NSns020-e5o182rbcqel9o9g.e.d-53.info2026-04-04 → 2026-05-06 · 3 obs
● 2026-04-04 19:45:24
● 2026-05-06 21:07:18
●NSns020-e5o182rbcqel9o9g.e.d-53.jp2026-04-04 → 2026-05-06 · 3 obs
● 2026-04-04 19:45:24
● 2026-05-06 21:07:18
●NSns020-e5o182rbcqel9o9g.e.d-53.net2026-04-04 → 2026-05-06 · 3 obs
● 2026-04-04 19:45:24
● 2026-05-06 21:07:18
●MXbookoff-us.mail.eo.outlook.com2015-07-05 → 2026-05-06 · 2 obs
● 2026-05-06 21:07:18
●A202.212.112.1212015-07-05 → 2026-05-06 · 2 obs
● 2026-05-06 21:07:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| us | b.cctld.us, f.cctld.us, k.cctld.us, m.cctld.us... | - |
| bookoff.us | dns-b.iij.ad.jp, dns-c.iij.ad.jp | - |
✅ Authoritative Response
Server:202.32.219.51
NS records: dns-b.iij.ad.jp, dns-c.iij.ad.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for bookoff.us (unsigned zone)
⏱️ Timing
Total: 1132ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 202.212.112.121 |
| NS | 3 | ns020-e5o182rbcqel9o9g.e.d-53.info, ns020-e5o182rbcqel9o9g.e.d-53.jp... |
| MX | 1 | bookoff-us.mail.eo.outlook.com (pri: 0) |
| TXT | 2 | MS=ms84549558, v=spf1 include:spf.protection.outlook.co |
| SOA | 1 | ns000.d-53.net dns-managers.iij.ad.jp |
Analysis
IP Addresses
bookoff.us resolves to one IP number: 202.212.112.121.
Name Servers
bookoff.us is delegated to six name servers: ns000.d-53.net, ns020-e5o182rbcqel9o9g.e.d-53.info, dns-b.iij.ad.jp, dns-c.iij.ad.jp, ns020-e5o182rbcqel9o9g.e.d-53.jp and ns020-e5o182rbcqel9o9g.e.d-53.net.
bookoff.us at least partially shares name servers with other domains, including asahibeer.co.jp, cabinet-cbc.ed.jp, 96.237.127.219.in-addr.arpa, 49.213.61.in-addr.arpa and piapro.jp.
These name servers are commonly used with rev.iij-dns.jp, rev.iij-dns.net, ns1.dox.jp, ns2.dox.jp, ns01.iij-dns.jp, ns00.iij-dns.net, dns0.iij-swg.jp and dns1.iij-swg.jp.
Host names with two IP numbers:
Host ns020-e5o182rbcqel9o9g.e.d-53.info points to 2001:240:bb81::28:51 and 202.32.219.51
Host dns-b.iij.ad.jp points to 2001:240:bb81::28:51 and 202.32.219.51
Host dns-c.iij.ad.jp points to 2001:240:bb81::29:111 and 210.138.20.111
Host ns020-e5o182rbcqel9o9g.e.d-53.jp points to 2001:240:bb81::29:1111 and 203.180.146.111
Host ns020-e5o182rbcqel9o9g.e.d-53.net points to 2001:240:bb81::29:111 and 210.138.20.111
Hosts pointing to 2001:240:bb81::28:51: ns020-e5o182rbcqel9o9g.e.d-53.info and dns-b.iij.ad.jp
Hosts pointing to 202.32.219.51: ns020-e5o182rbcqel9o9g.e.d-53.info and dns-b.iij.ad.jp
Hosts pointing to 2001:240:bb81::29:111: dns-c.iij.ad.jp and ns020-e5o182rbcqel9o9g.e.d-53.net
Hosts pointing to 210.138.20.111: dns-c.iij.ad.jp and ns020-e5o182rbcqel9o9g.e.d-53.net
Mail Servers
A single mail server handles bookoff.us, bookoff-us.mail.eo.outlook.com.
Host bookoff-us.mail.eo.outlook.com points to eight IPs: 2a01:111:f403:cc1a::, 2a01:111:f403:cc1a::3, 2a01:111:f403:cc1f::, 2a01:111:f403:cc24::, 52.101.124.0, 52.101.124.1, 52.101.124.5 and 52.101.157.40.