userbook.com - dns.ninja
userbook.com
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=1786149339 | ||||||
Subdomains
mail.userbook.com |
hostmaster.userbook.com |
www.userbook.com |
Same first word
Similar names
soreboku.jp |
bookerus.com |
booksure.com |
booksure.com.au |
surebook.com |
rebookus.com |
soreboku.com |
booksure.co.za |
ubookers.com |
okbourse.com |
rebosoku.com |
DNS History
11 records (8 active, 3 former)
●NSdns1.registrar-servers.com2026-02-16 → 2026-08-08 · 3 obs
● 2026-02-16 22:30:30
● 2026-08-08 00:49:18
○NSdns1.se2015-08-26 → 2018-10-07 · 4 obs
● 2018-10-07 02:53:46
○ 2026-02-16 22:30:30
○ 2026-08-08 00:49:18
●NSdns2.registrar-servers.com2026-02-16 → 2026-08-08 · 3 obs
● 2026-02-16 22:30:30
● 2026-08-08 00:49:18
○NSdns2.se2015-08-26 → 2018-10-07 · 4 obs
● 2018-10-07 02:53:46
○ 2026-02-16 22:30:30
○ 2026-08-08 00:49:18
●MXalt1.aspmx.l.google.com2017-03-12 → 2026-08-08 · 3 obs
● 2017-03-12 11:32:16
● 2026-08-08 00:49:18
●MXalt2.aspmx.l.google.com2017-03-12 → 2026-08-08 · 3 obs
● 2017-03-12 11:32:16
● 2026-08-08 00:49:18
●MXaspmx.l.google.com2017-03-12 → 2026-08-08 · 3 obs
● 2017-03-12 11:32:16
● 2026-08-08 00:49:18
●MXaspmx2.googlemail.com2017-03-12 → 2026-08-08 · 3 obs
● 2017-03-12 11:32:16
● 2026-08-08 00:49:18
●MXaspmx3.googlemail.com2017-03-12 → 2026-08-08 · 3 obs
● 2017-03-12 11:32:16
● 2026-08-08 00:49:18
○MXmail.userbook.com2015-08-26 → 2016-12-30 · 4 obs
● 2016-12-30 02:02:52
○ 2017-03-12 11:32:16
○ 2026-08-08 00:49:18
●A89.221.253.242015-08-26 → 2026-08-08 · 2 obs
● 2026-08-08 00:49:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | d.gtld-servers.net, b.gtld-servers.net, l.gtld-servers.net, h.gtld-servers.net... | - |
| userbook.com | dns1.registrar-servers.com, dns2.registrar-servers.com | 4 records |
✅ Authoritative Response
Server:156.154.133.200
NS records: dns1.registrar-servers.com, dns2.registrar-servers.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for userbook.com (unsigned zone)
⏱️ Timing
Total: 298ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 89.221.253.24 |
| NS | 2 | dns1.registrar-servers.com, dns2.registrar-servers.com |
| MX | 5 | aspmx.l.google.com (pri: 1), alt1.aspmx.l.google.com (pri: 5)... |
| TXT | 1 | v=spf1 include:_spf.google.com ~all |
| SOA | 1 | dns1.registrar-servers.com hostmaster.re |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (dns1.registrar-servers.com, dns1.registrar-servers.com, dns2.registrar-servers.com...)
Analysis
Hierarchy
The domain userbook.com is parent to mail.userbook.com, hostmaster.userbook.com and www.userbook.com.
IP Addresses
userbook.com points to a single IP number: 89.221.253.24.
Host names such as www.userbook.com, mail.userbook.com and hostmaster.userbook.com share their IP numbers with userbook.com.
Name Servers
DNS delegation for userbook.com points to two name servers: dns1.registrar-servers.com and dns2.registrar-servers.com.
userbook.com shares its name server setup with other domains, including parimate.com, login-page.com, webosity.com and two others.
At least some of userbook.com's name servers are shared with other domains, for example partsweb.co, zenpen.net, cnmgd.org and two more.
It is common for these name servers to be used in conjunction with the name servers dns3.registrar-servers.com, dns4.registrar-servers.com and dns5.registrar-servers.com.
dns1.registrar-servers.com directs to 156.154.132.200 and 2610:a1:1024::200. dns2.registrar-servers.com directs to 156.154.133.200 and 2610:a1:1025::200. Each host name carries two IP addresses.
Mail Servers
Five mail servers handle userbook.com: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.
userbook.com shares mail servers — at least in part — with other domains, including ns500671.ns500671.ns500754.ns500704.ns500671.ns500688.ns500649.ns500678.ns500671.ns500666.ns500153.tenderladiesbz.com, ns500759.ns500698.ns500698.ns500758.ns500758.ns500698.ns500698.ns500736.ns500736.ns500708.ns500576.ns500576.ns500698.ns500576.ns500576.trackreceptor.com, ns500731.ns500742.ns500754.ns500754.ns500671.ns500704.ns500705.ns500705.ns500705.ns500678.ns500142.lusty(0x736c7574)z.com and two others.
These mail servers are frequently used alongside mail servers alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 other.
Host names with two IP numbers:
aspmx2.googlemail.com has two IP addresses: 108.177.123.26 and 2800:3f0:4003:c0f::1b.
aspmx3.googlemail.com has two IP addresses: 172.253.116.27 and 2a00:1450:400b:c02::1a.
aspmx.l.google.com has two IP addresses: 172.253.139.26 and 2607:f8b0:4004:c17::1b.
alt1.aspmx.l.google.com has two IP addresses: 108.177.123.26 and 2800:3f0:4003:c0f::1b.
alt2.aspmx.l.google.com has two IP addresses: 172.253.116.26 and 2a00:1450:400b:c02::1a.
Host names pointing to 2800:3f0:4003:c0f::1b IP addresses: aspmx2.googlemail.com and alt1.aspmx.l.google.com.
Host names pointing to 108.177.123.26 IP addresses: aspmx2.googlemail.com and alt1.aspmx.l.google.com.
Host names pointing to 2a00:1450:400b:c02::1a IP addresses: aspmx3.googlemail.com and alt2.aspmx.l.google.com.