`greenfieldnetworks.com`

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`
MX	`rcdn-mx-01.cisco.com` ⭐
		A	2001:420:1101:7::48a3:166^{🇺🇸 ASNTTCISCO2001:420:1100::/41 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`rcdn-mx-01.cisco.com`
		A	72.163.7.166^{🇺🇸 ASNTTCISCO72.163.7.0/24 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`rcdn-mx-01.cisco.com`
MX	`aer-mx-01.cisco.com`⁽²⁰⁾
		A	2001:420:4621::ad26:d496^{🇳🇱 ASNTTCISCO2001:420:4000::/36 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`aer-mx-01.cisco.com`
		A	173.38.212.150^{🇳🇱 ASNTTCISCO173.38.128.0/17 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`aer-mx-01.cisco.com`
MX	`alln-mx-01.cisco.com`⁽²⁰⁾
		A	2001:420:1201:6::ad25:93e6^{🇺🇸 ASNTTCISCO2001:420:1200::/41 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`alln-mx-01.cisco.com`
		A	173.37.147.230^{🇺🇸 ASNTTCISCO173.37.128.0/19 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`alln-mx-01.cisco.com`
SOA	`ns1.cisco.com`postmaster@cisco.com serial=50

`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=1775062982

WOT: UNKNOWN (69/100)

Subdomains

www.greenfieldnetworks.com

Same first word

greenfieldnetworks.com

DNS History

10 records (8 active, 2 former)

○NSedns-aln1-1-l2017-10-10 → 2017-10-10 · 4 obs

○ 2016-08-02 21:22:14
● 2017-10-10 04:21:48
○ 2026-02-18 06:19:06
○ 2026-04-01 17:11:54

○NSedns-aln1-1-l.cisco.com2015-08-16 → 2016-08-02 · 4 obs

● 2015-08-16 17:45:00
● 2016-08-02 21:22:14
○ 2017-10-10 04:21:48
○ 2026-04-01 17:11:54

●NSns1.cisco.com2015-08-16 → 2026-04-01 · 2 obs

● 2015-08-16 17:45:00
● 2026-04-01 17:11:54

●NSns2.cisco.com2015-08-16 → 2026-04-01 · 2 obs

● 2015-08-16 17:45:00
● 2026-04-01 17:11:54

●NSns3.cisco.com2015-08-16 → 2026-04-01 · 2 obs

● 2015-08-16 17:45:00
● 2026-04-01 17:11:54

●MXaer-mx-01.cisco.com2015-08-16 → 2026-04-01 · 2 obs

● 2015-08-16 17:45:00
● 2026-04-01 17:11:54

●MXalln-mx-01.cisco.com2015-08-16 → 2026-04-01 · 2 obs

● 2015-08-16 17:45:00
● 2026-04-01 17:11:54

●MXrcdn-mx-01.cisco.com2015-08-16 → 2026-04-01 · 2 obs

● 2015-08-16 17:45:00
● 2026-04-01 17:11:54

●A2001:420:1101:1::b2015-08-16 → 2026-04-01 · 2 obs

● 2015-08-16 17:45:00
● 2026-04-01 17:11:54

●A72.163.4.1542015-08-16 → 2026-04-01 · 2 obs

● 2015-08-16 17:45:00
● 2026-04-01 17:11:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, e.gtld-servers.net, a.gtld-servers.net, k.gtld-servers.net...	-
greenfieldnetworks.com	ns1.cisco.com, ns2.cisco.com, ns3.cisco.com	6 records

✅ Authoritative Response

Server:72.163.5.201

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for greenfieldnetworks.com (unsigned zone)

⏱️ Timing

Total: 453ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`72.163.4.154`
AAAA	1	`2001:420:1101:1::b`
NS	3	`ns2.cisco.com, ns3.cisco.com...`
MX	3	`aer-mx-01.cisco.com (pri: 20), rcdn-mx-01.cisco.com (pri: 10)...`
SOA	1	`ns1.cisco.com postmaster.cisco.com`

📌 Glue Records Collected

Total: 6

Out-of-bailiwick: 6 (ns1.cisco.com, ns1.cisco.com, ns2.cisco.com...)

Analysis

Hierarchy

The parent of www.greenfieldnetworks.com is greenfieldnetworks.com.

IP Addresses

greenfieldnetworks.com points to two IP numbers: 2001:420:1101:1::b and 72.163.4.154.

Other host names such as cisco.org.vc, sem-central.com, cisco.net, ciscobuy.info and cisco.ap.it share IPs with greenfieldnetworks.com.

Name Servers

greenfieldnetworks.com is delegated to three name servers: ns1.cisco.com, ns2.cisco.com and ns3.cisco.com.

greenfieldnetworks.com at least partially shares name servers with other domains, for example ciscohumannetwork.org, ciscosiliconone.eu, ciscosiliconone.info, webline.com and connectedfuturesmag.com.

Host names with two IP numbers:

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

Mail Servers

greenfieldnetworks.com is handled by three mail servers: aer-mx-01.cisco.com, alln-mx-01.cisco.com and rcdn-mx-01.cisco.com.

greenfieldnetworks.com shares at least partially some mail servers with other domains, for instance coreoptics.com, luxtera.online, rigor.com, fluidmesh.com and teltier.com.

these mail servers are often used together with mail1.dynamicsoft.com, rtp-mx-01.cisco.com and ams-mx-01.cisco.com.

Host names with two IP numbers:

aer-mx-01.cisco.com points to 2001:420:4621::ad26:d496 and 173.38.212.150

alln-mx-01.cisco.com points to 2001:420:1201:6::ad25:93e6 and 173.37.147.230

rcdn-mx-01.cisco.com points to 2001:420:1101:7::48a3:166 and 72.163.7.166

greenfieldnetworks.com - robtex.com