`ciscolearning.info`

DNSSEC	⚠️ Not signed
A	2001:420:1101:1::b^{🇺🇸 ASNTTCISCO2001:420:1100::/41 170 West Tasman Drive San Jose CA 95134 United States}
		PTR	`redirect.cisco.com`
A	72.163.4.154^{🇺🇸 ASNTTCISCO72.163.4.0/24 170 West Tasman Drive San Jose CA 95134 United States}
NS	`ns1.cisco.com` ⭐
		A	2001:420:1101:6::a^{🇺🇸 ASNTTCISCO2001:420:1100::/41 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`ns1.cisco.com`
		A	72.163.5.201^{🇺🇸 ASNTTCISCO72.163.0.0/18 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`ns1.cisco.com`
NS	`ns2.cisco.com`
		A	2001:420:2041:5000::a^{🇺🇸 ASNTTCISCO2001:420:2000::/35 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`ns2.cisco.com`
		A	64.102.255.44^{🇺🇸 ASNTTCISCO64.102.0.0/16 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`ns2.cisco.com`
NS	`ns3.cisco.com`
		A	2001:420:1201:7::a^{🇺🇸 ASNTTCISCO2001:420:1200::/41 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`ns3.cisco.com`
		A	173.37.146.41^{🇺🇸 ASNTTCISCO173.37.128.0/19 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`ns3.cisco.com`
SOA	`ns1.cisco.com`postmaster@cisco.com serial=5

`info`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.info.afilias-nst.info` ⭐
	NS	`a2.info.afilias-nst.info`
	NS	`b0.info.afilias-nst.org` ⚠️ Not in parent delegation
	NS	`b2.info.afilias-nst.org` ⚠️ Not in parent delegation
	NS	`c0.info.afilias-nst.info`
	NS	`d0.info.afilias-nst.org` ⚠️ Not in parent delegation
	SOA	`a0.info.afilias-nst.info`hostmaster@donuts.email serial=1775228760

Same first word

ciscolearning.us

ciscolearning.info

DNS History

7 records (5 active, 2 former)

○NSedns-aln1-1-l2017-05-17 → 2017-05-17 · 4 obs

○ 2016-06-30 11:43:46
● 2017-05-17 01:56:48
○ 2026-03-31 13:54:08
○ 2026-04-03 15:24:48

○NSedns-aln1-1-l.cisco.com2015-08-14 → 2016-06-30 · 4 obs

● 2015-08-14 11:17:08
● 2016-06-30 11:43:46
○ 2017-05-17 01:56:48
○ 2026-04-03 15:24:48

●NSns1.cisco.com2015-08-14 → 2026-04-03 · 2 obs

● 2015-08-14 11:17:08
● 2026-04-03 15:24:48

●NSns2.cisco.com2015-08-14 → 2026-04-03 · 2 obs

● 2015-08-14 11:17:08
● 2026-04-03 15:24:48

●NSns3.cisco.com2015-08-14 → 2026-04-03 · 2 obs

● 2015-08-14 11:17:08
● 2026-04-03 15:24:48

●A2001:420:1101:1::b2015-08-14 → 2026-04-03 · 2 obs

● 2015-08-14 11:17:08
● 2026-04-03 15:24:48

●A72.163.4.1542015-08-14 → 2026-04-03 · 2 obs

● 2015-08-14 11:17:08
● 2026-04-03 15:24:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
info	a0.info.afilias-nst.info, a2.info.afilias-nst.info, c0.info.afilias-nst.info	-
ciscolearning.info	ns2.cisco.com, ns1.cisco.com, ns3.cisco.com	-

✅ Authoritative Response

Server:173.37.146.41

NS records: ns2.cisco.com, ns1.cisco.com, ns3.cisco.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ciscolearning.info (unsigned zone)

⏱️ Timing

Total: 518ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`72.163.4.154`
AAAA	1	`2001:420:1101:1::b`
NS	3	`ns1.cisco.com, ns3.cisco.com...`
SOA	1	`ns1.cisco.com postmaster.cisco.com`

Analysis

IP Addresses

The entity ciscolearning.info points to two IP numbers: 2001:420:1101:1::b and 72.163.4.154.

For instance, other host names cisco-systems-capital.eu, cisco.cn, cloudconsumption.cisco.com, cisco.im.it and cisco.co.pn share IP numbers with ciscolearning.info.

Name Servers

The delegation for ciscolearning.info is handled by three name servers: ns1.cisco.com, ns2.cisco.com and ns3.cisco.com.

ciscolearning.info shares name servers with other domains at least partially, for example acaciacomms.com, cisco-preferred-access.net, truejoule.com, byiphone.com and performancevision.com.

Host names with two IPs:

ns1.cisco.com points to 2001:420:1101:6::a and 72.163.5.201

ns2.cisco.com points to 2001:420:2041:5000::a and 64.102.255.44

ns3.cisco.com points to 2001:420:1201:7::a and 173.37.146.41

ciscolearning.info - robtex.com