`combobooks.com`

DNSSEC	⚠️ Not signed
A	3.69.11.0^{🇩🇪 Amazon3.64.0.0/12 EC2 FRA Prefix}
		PTR	`ec2-3-69-11-0.eu-central-1.compute.amazonaws.com`
NS	`ns1.softlayer.com` ⭐
		A	2607:f0d0:0:f:1::1^{🇺🇸 SOFTLAYER2607:f0d0::/32 -6-1}
			PTR	`ns1.softlayer.com`
		A	67.228.254.4^{🇺🇸 SOFTLAYER67.228.254.0/23 -anycast02}
			PTR	`4.fe.e443.ip4.static.sl-reverse.com`
NS	`ns2.softlayer.com`
		A	2607:f0d0:0:f:2::1^{🇺🇸 SOFTLAYER2607:f0d0::/32 -6-1}
			PTR	`ns2.softlayer.com`
		A	67.228.255.5^{🇺🇸 SOFTLAYER67.228.254.0/23 -anycast02}
			PTR	`5.ff.e443.ip4.static.sl-reverse.com`
MX	`combobooks-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::7^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db4pr02cu00307.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::8^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db5pr02cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::d^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db6pr03cu00105.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::e^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db8pr02cu00106.inbound.protection.outlook.com`
		A	52.101.68.3^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db7pr03cu00403.inbound.protection.outlook.com`
		A	52.101.68.25^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db8pr02cu00101.inbound.protection.outlook.com`
		A	52.101.73.12^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am4pr0401cu00104.inbound.protection.outlook.com`
		A	52.101.73.26^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as9pr05cu01302.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
TXT	`MS=ms46792822`
SOA	`ns1.softlayer.com`root@combobooks.com 2026-07-06 #3

`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.net`nstld@verisign-grs.com serial=1786077179

PTR for

216.65.81.149.in-addr.arpa

Same first word

combobooks.com

combobooks.gr

DNS History

8 records (4 active, 4 former)

●NSns1.softlayer.com2015-08-20 → 2026-08-07 · 2 obs

● 2015-08-20 22:03:42
● 2026-08-07 04:38:34

●NSns2.softlayer.com2015-12-18 → 2026-08-07 · 3 obs

○ 2015-08-20 22:03:42
● 2015-12-18 10:28:22
● 2026-08-07 04:38:34

●MXcombobooks-com.mail.protection.outlook.com2026-08-07 → 2026-08-07 · 2 obs

○ 2020-02-13 14:35:40
● 2026-08-07 04:38:34

○MXmail.combobooks.com2015-08-20 → 2020-02-13 · 3 obs

● 2015-08-20 22:03:42
● 2020-02-13 14:35:40
○ 2026-08-07 04:38:34

●A3.69.11.02026-08-07 → 2026-08-07 · 2 obs

○ 2020-02-13 14:35:40
● 2026-08-07 04:38:34

○A3.71.87.722026-08-07 → 2026-08-07 · 1 obs

○ 2026-08-07 04:38:34

○A37.58.111.1712020-02-13 → 2020-02-13 · 3 obs

○ 2017-02-19 15:46:04
● 2020-02-13 14:35:40
○ 2026-08-07 04:38:34

○A5.10.90.2182015-08-20 → 2017-02-19 · 4 obs

● 2015-08-20 22:03:42
● 2017-02-19 15:46:04
○ 2020-02-13 14:35:40
○ 2026-08-07 04:38:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
combobooks.com	ns2.softlayer.com, ns1.softlayer.com	4 records

✅ Authoritative Response

Server:67.228.254.4

NS records: ns2.softlayer.com, ns1.softlayer.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for combobooks.com (unsigned zone)

⏱️ Timing

Total: 126ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`3.69.11.0`
NS	2	`ns2.softlayer.com, ns1.softlayer.com`
MX	1	`combobooks-com.mail.protection.outlook.c`
TXT	2	`MS=ms46792822, v=spf1 include:spf.protection.outlook.co`
SOA	1	`ns1.softlayer.com root.combobooks.com`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns2.softlayer.com, ns2.softlayer.com, ns1.softlayer.com...)

Analysis

IP Addresses

combobooks.com resolves to one IP address: 3.69.11.0.

Host names such as biblioupoli.gr, biblioupoli.com and ec2-3-69-11-0.eu-central-1.compute.amazonaws.com share their IP numbers with combobooks.com.

Name Servers

combobooks.com is served by two delegated name servers, ns1.softlayer.com and ns2.softlayer.com.

combobooks.com uses the same name servers as several other domains — among them smtpclick.com, rds3.com, animeclub.us and two more.

The name servers of combobooks.com overlap at least partially with those of other domains — among them 222.122.174.in-addr.arpa, 225.18.67.in-addr.arpa, 230.84.70.in-addr.arpa and two more.

These name servers commonly appear in delegations together with ns3.arpa.networklayer.com, ns4.arpa.networklayer.com, ns1.theplanet.com and 4 other.

Each of the two host names carries two IP addresses: ns1.softlayer.com points to 67.228.254.4 and 2607:f0d0:0:f:1::1, and ns2.softlayer.com points to 67.228.255.5 and 2607:f0d0:0:f:2::1.

Mail Servers

Mail for combobooks.com is handled by a single mail server, combobooks-com.mail.protection.outlook.com.

combobooks-com.mail.protection.outlook.com resolves to 8 IP addresses — 52.101.68.3, 52.101.68.25, 52.101.73.12 and 5 others.

combobooks.com - robtex.com

combobooks.com

com