`riverheadnetworks.com`

DNSSEC	⚠️ Not signed
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`⁽¹⁵⁾
		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`⁽¹⁵⁾
		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=7

`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=1775046532

Same first word

riverheadnetworks.com

DNS History

8 records (6 active, 2 former)

○NSedns-aln1-1-l.cisco.com2015-07-22 → 2016-07-31 · 4 obs

● 2015-07-22 06:06:14
● 2016-07-31 21:15:24
○ 2017-04-20 21:59:16
○ 2026-04-01 12:44:16

○NSedns-rtp5-1-l2017-04-20 → 2017-04-20 · 4 obs

○ 2016-07-31 21:15:24
● 2017-04-20 21:59:16
○ 2026-03-31 13:41:24
○ 2026-04-01 12:44:16

●NSns1.cisco.com2015-07-22 → 2026-04-01 · 2 obs

● 2015-07-22 06:06:14
● 2026-04-01 12:44:16

●NSns2.cisco.com2015-07-22 → 2026-04-01 · 2 obs

● 2015-07-22 06:06:14
● 2026-04-01 12:44:16

●NSns3.cisco.com2015-07-22 → 2026-04-01 · 2 obs

● 2015-07-22 06:06:14
● 2026-04-01 12:44:16

●MXaer-mx-01.cisco.com2015-07-22 → 2026-04-01 · 2 obs

● 2015-07-22 06:06:14
● 2026-04-01 12:44:16

●MXalln-mx-01.cisco.com2015-07-22 → 2026-04-01 · 2 obs

● 2015-07-22 06:06:14
● 2026-04-01 12:44:16

●MXrcdn-mx-01.cisco.com2015-07-22 → 2026-04-01 · 2 obs

● 2015-07-22 06:06:14
● 2026-04-01 12:44:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
riverheadnetworks.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 riverheadnetworks.com (unsigned zone)

⏱️ Timing

Total: 209ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	3	`ns1.cisco.com, ns3.cisco.com...`
MX	3	`aer-mx-01.cisco.com (pri: 15), alln-mx-01.cisco.com (pri: 15)...`
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

Name Servers

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

At least part of the name servers for riverheadnetworks.com are shared with other domains, for instance cisconurseconnect.net, ciscointuitive.com, connectedbees.org, aeropoint.net and cisco-webex.mobi.

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

Three mail servers handle riverheadnetworks.com: aer-mx-01.cisco.com, alln-mx-01.cisco.com and rcdn-mx-01.cisco.com.

riverheadnetworks.com shares at least some mail servers with other domains, for example navini.com, mailingcompanion.com, splunk.com, cloupia.com and reactivity.com.

These mail servers are commonly used alongside mail1.dynamicsoft.com, ams-mx-01.cisco.com and rtp-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

riverheadnetworks.com - robtex.com