iwbooks.com - robtex.com
iwbooks.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3037::6815:151e🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::ac43:c407🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.21.30Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.196.7🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | ns1.ubmdns.com ⭐ | ||||||
| A | 2400:cb00:2049:1::a29f:d0🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| PTR | ns1.ubmdns.com | ||||||
| A | 162.159.0.208Cloudflare162.159.0.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.ubmdns.com | ||||||
| A | 2400:cb00:2049:1::a29f:1d0🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| PTR | ns2.ubmdns.com | ||||||
| A | 162.159.1.208Cloudflare162.159.1.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| TXT | v=spf1 mx include:spf.ubm-us.net -all | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.21.30, 172.67.196.7 | ||||||
| IPv6 hints | 2606:4700:3037::6815:151e, 2606:4700:3037::ac43:c407 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=16, name=cloudflare-ech.com | ||||||
| SOA | ns1.ubmdns.comdns@cloudflare.com serial=2409119126 | ||||||
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=1784690577 | ||||||
Same first word
iwbooks.com |
Similar names
DNS History
14 records (6 active, 8 former)
○NSns1.ubm-us.net2015-07-17 → 2017-03-24 · 4 obs
● 2015-07-17 18:42:18
● 2017-03-24 15:21:06
○ 2026-07-13 10:53:44
○ 2026-07-22 03:32:48
● 2017-03-24 15:21:06
○ 2026-07-13 10:53:44
○ 2026-07-22 03:32:48
●NSns1.ubmdns.com2026-07-13 → 2026-07-22 · 3 obs
○ 2017-03-24 15:21:06
● 2026-07-13 10:53:44
● 2026-07-22 03:32:48
● 2026-07-13 10:53:44
● 2026-07-22 03:32:48
○NSns2.ubm-us.net2015-07-17 → 2017-03-24 · 4 obs
● 2015-07-17 18:42:18
● 2017-03-24 15:21:06
○ 2026-07-13 10:53:44
○ 2026-07-22 03:32:48
● 2017-03-24 15:21:06
○ 2026-07-13 10:53:44
○ 2026-07-22 03:32:48
●NSns2.ubmdns.com2026-07-13 → 2026-07-22 · 3 obs
○ 2017-03-24 15:21:06
● 2026-07-13 10:53:44
● 2026-07-22 03:32:48
● 2026-07-13 10:53:44
● 2026-07-22 03:32:48
○NSns3.ubm-us.net2015-07-17 → 2017-03-24 · 4 obs
● 2015-07-17 18:42:18
● 2017-03-24 15:21:06
○ 2026-07-13 10:53:44
○ 2026-07-22 03:32:48
● 2017-03-24 15:21:06
○ 2026-07-13 10:53:44
○ 2026-07-22 03:32:48
○MXmail1.ubm-us.net2015-07-17 → 2017-03-24 · 4 obs
● 2015-07-17 18:42:18
● 2017-03-24 15:21:06
○ 2026-07-13 10:53:44
○ 2026-07-22 03:32:48
● 2017-03-24 15:21:06
○ 2026-07-13 10:53:44
○ 2026-07-22 03:32:48
●A104.21.21.302026-07-13 → 2026-07-22 · 3 obs
○ 2017-03-24 15:21:06
● 2026-07-13 10:53:44
● 2026-07-22 03:32:48
● 2026-07-13 10:53:44
● 2026-07-22 03:32:48
●A172.67.196.72026-07-13 → 2026-07-22 · 3 obs
○ 2017-03-24 15:21:06
● 2026-07-13 10:53:44
● 2026-07-22 03:32:48
● 2026-07-13 10:53:44
● 2026-07-22 03:32:48
○A192.155.42.932017-03-24 → 2017-03-24 · 4 obs
○ 2016-07-15 01:26:08
● 2017-03-24 15:21:06
○ 2026-07-13 10:53:44
○ 2026-07-22 03:32:48
● 2017-03-24 15:21:06
○ 2026-07-13 10:53:44
○ 2026-07-22 03:32:48
○A192.155.48.932015-07-17 → 2016-07-15 · 4 obs
● 2015-07-17 18:42:18
● 2016-07-15 01:26:08
○ 2017-03-24 15:21:06
○ 2026-07-22 03:32:48
● 2016-07-15 01:26:08
○ 2017-03-24 15:21:06
○ 2026-07-22 03:32:48
●A2606:4700:3037::6815:151e2026-07-13 → 2026-07-22 · 3 obs
○ 2017-03-24 15:21:06
● 2026-07-13 10:53:44
● 2026-07-22 03:32:48
● 2026-07-13 10:53:44
● 2026-07-22 03:32:48
●A2606:4700:3037::ac43:c4072026-07-13 → 2026-07-22 · 3 obs
○ 2017-03-24 15:21:06
● 2026-07-13 10:53:44
● 2026-07-22 03:32:48
● 2026-07-13 10:53:44
● 2026-07-22 03:32:48
○A2620:103::192:155:48:932015-07-17 → 2016-07-15 · 4 obs
● 2015-07-17 18:42:18
● 2016-07-15 01:26:08
○ 2017-03-24 15:21:06
○ 2026-07-22 03:32:48
● 2016-07-15 01:26:08
○ 2017-03-24 15:21:06
○ 2026-07-22 03:32:48
○A2620:103:1:1:192:155:42:932017-03-24 → 2017-03-24 · 4 obs
○ 2016-07-15 01:26:08
● 2017-03-24 15:21:06
○ 2026-07-13 10:53:44
○ 2026-07-22 03:32:48
● 2017-03-24 15:21:06
○ 2026-07-13 10:53:44
○ 2026-07-22 03:32:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | e.gtld-servers.net, f.gtld-servers.net, k.gtld-servers.net, l.gtld-servers.net... | - |
| iwbooks.com | ns1.ubmdns.com, ns2.ubmdns.com | 2 records |
✅ Authoritative Response
Server:162.159.1.208
NS records: ns1.ubmdns.com, ns2.ubmdns.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 126ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.21.30, 172.67.196.7 |
| AAAA | 2 | 2606:4700:3037::6815:151e, 2606:4700:3037::ac43:c407 |
| NS | 2 | ns1.ubmdns.com, ns2.ubmdns.com |
| TXT | 1 | v=spf1 mx include:spf.ubm-us.net -all |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | ns1.ubmdns.com dns.cloudflare.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.ubmdns.com, ns2.ubmdns.com)
Analysis
IP Addresses
iwbooks.com resolves to four IP addresses: 104.21.21.30, 172.67.196.7, 2606:4700:3037::6815:151e and 2606:4700:3037::ac43:c407.
Two other host names, along with tetchytech.click, client.defenderblt.com and internetbanking.confesol.com.br.cdn.cloudflare.net, also share IP numbers with iwbooks.com.
Name Servers
iwbooks.com uses two name servers for its delegation: ns1.ubmdns.com and ns2.ubmdns.com.
iwbooks.com shares its NS records with other domains, for example sysadmin.us, intelligentcontentconference.com, 21cit.com and two others.
The two host names ns1.ubmdns.com and ns2.ubmdns.com each have a pair of IP addresses: ns1.ubmdns.com has 162.159.0.208 and 2400:cb00:2049:1::a29f:d0, and ns2.ubmdns.com has 162.159.1.208 and 2400:cb00:2049:1::a29f:1d0.