`51cto.co`

DNSSEC	⚠️ Not signed
A	172.236.108.16^{🇺🇸 AKAMAI-LINODE-AP172.236.96.0/19 Akamai Technologies}
		PTR	`k8s-svc-lander-oliver-us-ord-01.parklogic.net`
A	172.239.193.153^{🇺🇸 AKAMAI-LINODE-AP172.239.192.0/19 Akamai Technologies}
A	172.239.194.103^{🇺🇸 AKAMAI-LINODE-AP172.239.192.0/19 Akamai Technologies}
NS	`ns1.parklogic.com` ⭐ ⚠️ Not in parent delegation
		A	2001:19f0:6000:39be:5400:6ff:fe0b:e907^{🇺🇸 AS-VULTR2001:19f0:6000::/38 Vultr Assigned Prefix}
			PTR	`dns-dnsdist-us-lax-01.parklogic.net`
		A	50.28.104.44^{🇺🇸 LiquidWeb-AZ50.28.96.0/19 LiquidWeb Inc West}
			PTR	`pistachio.parklogic.com`
		A	50.116.34.34^{🇺🇸 AKAMAI-LINODE-AP50.116.32.0/20 Akamai Technologies}
			PTR	`lemonade.parklogic.com`
		A	69.39.238.36^{🇺🇸 ASN-CQ-GIGENET69.39.224.0/20 GigENET Route}
			PTR	`sandstone1.parklogic.com`
		A	69.39.238.37^{🇺🇸 ASN-CQ-GIGENET69.39.224.0/20 GigENET Route}
			PTR	`sandstone2.parklogic.com`
		A	149.28.95.10^{🇺🇸 AS-VULTR149.28.64.0/19 Vultr Assigned Prefix}
			PTR	`dns-dnsdist-us-lax-01.parklogic.net`
NS	`ns1.oh313.parklogic.com` ⚠️ Not in zone NS records
		A	2001:19f0:6000:39be:5400:6ff:fe0b:e907^{🇺🇸 AS-VULTR2001:19f0:6000::/38 Vultr Assigned Prefix}
			PTR	`dns-dnsdist-us-lax-01.parklogic.net`
		A	50.28.104.44^{🇺🇸 LiquidWeb-AZ50.28.96.0/19 LiquidWeb Inc West}
			PTR	`pistachio.parklogic.com`
		A	50.116.34.34^{🇺🇸 AKAMAI-LINODE-AP50.116.32.0/20 Akamai Technologies}
			PTR	`lemonade.parklogic.com`
		A	69.39.238.36^{🇺🇸 ASN-CQ-GIGENET69.39.224.0/20 GigENET Route}
			PTR	`sandstone1.parklogic.com`
		A	69.39.238.37^{🇺🇸 ASN-CQ-GIGENET69.39.224.0/20 GigENET Route}
			PTR	`sandstone2.parklogic.com`
		A	149.28.95.10^{🇺🇸 AS-VULTR149.28.64.0/19 Vultr Assigned Prefix}
			PTR	`dns-dnsdist-us-lax-01.parklogic.net`
NS	`ns2.oh313.parklogic.com` ⚠️ Not in zone NS records
		A	2001:19f0:5c00:481f:5400:6ff:fe0b:e87c^{🇺🇸 AS-VULTR2001:19f0:5c00::/38 Vultr Assigned Prefix}
		A	45.79.197.241^{🇺🇸 AKAMAI-LINODE-AP45.79.192.0/19 Akamai Technologies}
			PTR	`bubblegum.parklogic.com`
		A	50.28.102.86^{🇺🇸 LiquidWeb-AZ50.28.96.0/19 LiquidWeb Inc West}
			PTR	`biscotti.parklogic.com`
		A	66.42.120.24^{🇺🇸 AS-VULTR66.42.112.0/20 Vultr Assigned Prefix}
			PTR	`66-42-120-24.choopa.net`
		A	216.38.8.120^{🇺🇸 ASN-CQ-GIGENET216.38.0.0/19 GigENET Route}
			PTR	`shamrock1.parklogic.com`
		A	216.38.8.121^{🇺🇸 ASN-CQ-GIGENET216.38.0.0/19 GigENET Route}
			PTR	`shamrock2.parklogic.com`
NS	`ns2.parklogic.com` ⚠️ Not in parent delegation
		A	2001:19f0:5c00:481f:5400:6ff:fe0b:e87c^{🇺🇸 AS-VULTR2001:19f0:5c00::/38 Vultr Assigned Prefix}
		A	45.79.197.241^{🇺🇸 AKAMAI-LINODE-AP45.79.192.0/19 Akamai Technologies}
			PTR	`bubblegum.parklogic.com`
		A	50.28.102.86^{🇺🇸 LiquidWeb-AZ50.28.96.0/19 LiquidWeb Inc West}
			PTR	`biscotti.parklogic.com`
		A	66.42.120.24^{🇺🇸 AS-VULTR66.42.112.0/20 Vultr Assigned Prefix}
			PTR	`66-42-120-24.choopa.net`
		A	216.38.8.120^{🇺🇸 ASN-CQ-GIGENET216.38.0.0/19 GigENET Route}
			PTR	`shamrock1.parklogic.com`
		A	216.38.8.121^{🇺🇸 ASN-CQ-GIGENET216.38.0.0/19 GigENET Route}
			PTR	`shamrock2.parklogic.com`
MX	`mx156.hostedmxserver.com` ⭐
		A	147.182.130.78^{🇺🇸 DIGITALOCEAN147.182.128.0/20 DigitalOcean}
		A	147.182.160.18^{🇺🇸 DIGITALOCEAN147.182.160.0/20 DigitalOcean}
		A	147.182.180.139^{🇺🇸 DIGITALOCEAN147.182.176.0/20 DigitalOcean}
		A	147.182.189.184^{🇺🇸 DIGITALOCEAN147.182.176.0/20 DigitalOcean}
		A	164.90.197.79^{🇳🇱 DIGITALOCEAN164.90.192.0/20 DigitalOcean}
		A	164.90.197.105^{🇳🇱 DIGITALOCEAN164.90.192.0/20 DigitalOcean}
		A	164.90.197.143^{🇳🇱 DIGITALOCEAN164.90.192.0/20 DigitalOcean}
		A	164.90.197.162^{🇳🇱 DIGITALOCEAN164.90.192.0/20 DigitalOcean}
TXT	`v=spf1 -all`
SOA	`ns1.parklogic.com`hostmaster@51cto.co 2019-10-23 #1

`co`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns0.centralnic.net` ⭐
	NS	`a.registrydns.co`
	NS	`b.registrydns.co`
	NS	`c.registrydns.co`
	NS	`d.registrydns.co`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=1759715716

Same first word

51cto.net

51cto.co

51cto.com

51cto.eu

Similar names

51oct.com

otc15.com

cto51.ru

51otc.com

DNS History

11 records (8 active, 3 former)

●NSns1.oh313.parklogic.com2026-06-19 → 2026-07-25 · 2 obs

● 2026-06-19 15:13:10
● 2026-07-25 10:46:26

●NSns1.parklogic.com2026-06-19 → 2026-07-25 · 2 obs

● 2026-06-19 15:13:10
● 2026-07-25 10:46:26

●NSns2.oh313.parklogic.com2026-06-19 → 2026-07-25 · 2 obs

● 2026-06-19 15:13:10
● 2026-07-25 10:46:26

●NSns2.parklogic.com2026-06-19 → 2026-07-25 · 2 obs

● 2026-06-19 15:13:10
● 2026-07-25 10:46:26

●MXmx156.hostedmxserver.com2026-06-19 → 2026-07-25 · 2 obs

● 2026-06-19 15:13:10
● 2026-07-25 10:46:26

●A172.236.108.162026-06-19 → 2026-07-25 · 3 obs

○ 2016-03-21 02:47:12
● 2026-06-19 15:13:10
● 2026-07-25 10:46:26

●A172.239.193.1532026-06-19 → 2026-07-25 · 3 obs

○ 2016-03-21 02:47:12
● 2026-06-19 15:13:10
● 2026-07-25 10:46:26

●A172.239.194.1032026-06-19 → 2026-07-25 · 3 obs

○ 2016-03-21 02:47:12
● 2026-06-19 15:13:10
● 2026-07-25 10:46:26

○A54.183.180.822015-08-22 → 2015-12-13 · 4 obs

● 2015-08-22 15:16:08
● 2015-12-13 22:13:50
○ 2016-03-21 02:47:12
○ 2026-07-25 10:46:26

○A67.229.168.422016-03-21 → 2016-03-21 · 4 obs

○ 2015-12-13 22:13:50
● 2016-03-21 02:47:12
○ 2026-06-19 15:13:10
○ 2026-07-25 10:46:26

○A67.229.168.432016-03-21 → 2016-03-21 · 4 obs

○ 2015-12-13 22:13:50
● 2016-03-21 02:47:12
○ 2026-06-19 15:13:10
○ 2026-07-25 10:46:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
co	b.registrydns.co, d.registrydns.co, a.registrydns.co, c.registrydns.co	-
51cto.co	ns1.oh313.parklogic.com, ns2.oh313.parklogic.com	-

✅ Authoritative Response

Server:50.28.104.44

NS records: ns1.oh313.parklogic.com, ns2.oh313.parklogic.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51cto.co (unsigned zone)

⏱️ Timing

Total: 702ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`172.239.194.103, 172.236.108.16...`
NS	2	`ns2.parklogic.com, ns1.parklogic.com`
MX	1	`mx156.hostedmxserver.com (pri: 30)`
TXT	1	`v=spf1 -all`
SOA	1	`ns1.parklogic.com hostmaster.51cto.co`

Analysis

IP Addresses

51cto.co maps to three IP numbers — 172.236.108.16, 172.239.193.153 and 172.239.194.103.

Additional host names — www.mguady.net, cliphot.cc, feiji11.buzz and two others — share IP numbers with 51cto.co.

Name Servers

51cto.co has four authoritative name servers: ns1.parklogic.com, ns2.parklogic.com, ns1.oh313.parklogic.com and ns2.oh313.parklogic.com.

51cto.co has at least partial name server overlap with other domains, such as xian357.top, mining.solutions, sgwww.wattsupmeters.com and two others.

Host names with 6 IP numbers:

ns1.parklogic.com carries IP addresses 50.28.104.44, 50.116.34.34 and 69.39.238.36, with 3 other addresses beyond those.

ns2.parklogic.com carries IP addresses 45.79.197.241, 50.28.102.86 and 66.42.120.24, with 3 other addresses beyond those.

ns1.oh313.parklogic.com carries IP addresses 50.28.104.44, 50.116.34.34 and 69.39.238.36, with 3 other addresses beyond those.

ns2.oh313.parklogic.com carries IP addresses 45.79.197.241, 50.28.102.86 and 66.42.120.24, with 3 other addresses beyond those.

These two host names — ns1.parklogic.com and ns1.oh313.parklogic.com — each point to 2001:19f0:6000:39be:5400:6ff:fe0b:e907 IP addresses.

These two host names — ns1.parklogic.com and ns1.oh313.parklogic.com — each point to 50.28.104.44 IP addresses.

These two host names — ns1.parklogic.com and ns1.oh313.parklogic.com — each point to 50.116.34.34 IP addresses.

These two host names — ns1.parklogic.com and ns1.oh313.parklogic.com — each point to 69.39.238.36 IP addresses.

These two host names — ns1.parklogic.com and ns1.oh313.parklogic.com — each point to 69.39.238.37 IP addresses.

These two host names — ns1.parklogic.com and ns1.oh313.parklogic.com — each point to 149.28.95.10 IP addresses.

These two host names — ns2.parklogic.com and ns2.oh313.parklogic.com — each point to 2001:19f0:5c00:481f:5400:6ff:fe0b:e87c IP addresses.

These two host names — ns2.parklogic.com and ns2.oh313.parklogic.com — each point to 45.79.197.241 IP addresses.

These two host names — ns2.parklogic.com and ns2.oh313.parklogic.com — each point to 50.28.102.86 IP addresses.

These two host names — ns2.parklogic.com and ns2.oh313.parklogic.com — each point to 66.42.120.24 IP addresses.

These two host names — ns2.parklogic.com and ns2.oh313.parklogic.com — each point to 216.38.8.120 IP addresses.

These two host names — ns2.parklogic.com and ns2.oh313.parklogic.com — each point to 216.38.8.121 IP addresses.

Mail Servers

51cto.co has one mail server: mx156.hostedmxserver.com.

51cto.co shares the same mail server setup as other domains, including sea-man.de, amistadynuii.my3gb.com, icaro.criticalpath.it and two others.

mx156.hostedmxserver.com points to 8 IP numbers: 147.182.130.78, 147.182.160.18, 147.182.180.139 and 5 other.

51cto.co - robtex.com

51cto.co

co

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`51cto.co`

`co`