`freestylelibre3.cn`

DNSSEC	⚠️ Not signed
NS	`abtnsdmz1.abbott.com` ⚠️ Not in zone NS records
		A	74.179.85.156^{🇺🇸 Microsoft74.176.0.0/14}
NS	`abtnsdmz2.abbott.com` ⚠️ Not in zone NS records
		A	20.64.178.77^{🇺🇸 Microsoft20.64.0.0/10}
NS	`rossns.abbott.com` ⚠️ Not in zone NS records
		A	74.179.85.156^{🇺🇸 Microsoft74.176.0.0/14}
NS	`rossns2.abbott.com` ⚠️ Not in zone NS records
		A	20.64.178.77^{🇺🇸 Microsoft20.64.0.0/10}

`cn`

	DNSSEC	⚠️ Not signed
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2035129106

Same first word

DNS History

4 records (4 active, 0 former)

●NSabtnsdmz1.abbott.com2026-06-04 → 2026-08-03 · 2 obs

● 2026-06-04 04:11:28
● 2026-08-03 18:29:20

●NSabtnsdmz2.abbott.com2026-06-04 → 2026-08-03 · 2 obs

● 2026-06-04 04:11:28
● 2026-08-03 18:29:20

●NSrossns.abbott.com2026-06-04 → 2026-08-03 · 2 obs

● 2026-06-04 04:11:28
● 2026-08-03 18:29:20

●NSrossns2.abbott.com2026-06-04 → 2026-08-03 · 2 obs

● 2026-06-04 04:11:28
● 2026-08-03 18:29:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	e.dns.cn, a.dns.cn, c.dns.cn, d.dns.cn...	-
freestylelibre3.cn	rossns.abbott.com, rossns2.abbott.com, abtnsdmz1.abbott.com, abtnsdmz2.abbott.com	-

✅ Authoritative Response

Server:20.64.178.77

NS records: rossns.abbott.com, rossns2.abbott.com, abtnsdmz1.abbott.com, abtnsdmz2.abbott.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for freestylelibre3.cn (unsigned zone)

⏱️ Timing

Total: 962ms | Queries: -

📄 Records

Type	Count	Sample Data

Analysis

Name Servers

freestylelibre3.cn has four authoritative name servers: abtnsdmz1.abbott.com, abtnsdmz2.abbott.com, rossns2.abbott.com and rossns.abbott.com.

At least some of freestylelibre3.cn's name servers are shared with other domains, for example a-care.co.kr, advanceorganic.net, freestylelibre.sk and two more.

The host names abtnsdmz1.abbott.com, abtnsdmz2.abbott.com, rossns2.abbott.com and rossns.abbott.com each carry a single IP address: abtnsdmz1.abbott.com directs to 74.179.85.156, abtnsdmz2.abbott.com directs to 20.64.178.77, rossns2.abbott.com directs to 20.64.178.77 and rossns.abbott.com directs to 74.179.85.156. Notably, abtnsdmz1.abbott.com and rossns.abbott.com share 74.179.85.156 and abtnsdmz2.abbott.com and rossns2.abbott.com share 20.64.178.77.

The host names abtnsdmz1.abbott.com and rossns.abbott.com both resolve to 74.179.85.156 IP addresses.

The host names abtnsdmz2.abbott.com and rossns2.abbott.com both resolve to 20.64.178.77 IP addresses.

freestylelibre3.cn - robtex.com