sysu.com - dns.ninja

`sysu.com`

DNSSEC	⚠️ Not signed
A	103.255.250.216^{🇸🇬 ENTECHNOLOGIES-AS-AP103.255.250.0/24 EN Technologies Co-location}
		PTR	`ip103-255-250-216.sg.en.net.sg`
NS	`ns01.dnslogic.sg` ⭐
		A	2402:1f00:8000:800::2335^{🇸🇬 OVH2402:1f00:8000::/40 2 Rue Kellermann}
			PTR	`vps-b456711b.vps.ovh.ca`
		A	15.235.192.120^{🇸🇬 OVH15.235.128.0/17 Hosting route}
			PTR	`ns01.dnslogic.sg`
NS	`ns02.dnslogic.sg`
		A	160.191.238.5^{BSPL-AS-AP160.191.238.0/24 BYIO SINGAPORE PTE. LTD.}
NS	`ns03.dnslogic.sg`
		A	2402:1f00:8000:800::2937^{🇸🇬 OVH2402:1f00:8000::/40 2 Rue Kellermann}
			PTR	`vps-b4989d75.vps.ovh.ca`
		A	15.235.163.121^{🇸🇬 OVH15.235.128.0/17 Hosting route}
			PTR	`ns03.dnslogic.sg`
MX	`mail.sysu.com` ⭐
		A	103.255.250.216^{🇸🇬 ENTECHNOLOGIES-AS-AP103.255.250.0/24 EN Technologies Co-location}
			PTR	`ip103-255-250-216.sg.en.net.sg`
TXT	`v=spf1 ip4:103.255.250.215 ip4:103.255.250.152 include:en.com.sg include:meta...`
SOA	`ns01.dnslogic.sg`noc-metapod8@alerts.en.services 2026-07-02 #1

`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=1783182751

Subdomains

mail.sysu.com

Same first word

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sysu.xyz

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sysu.com

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sysu.com.cn

sysu.org

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sysu.ca

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sysu.co.kr

sysu.net

sysu.org.cn

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DNS History

15 records (5 active, 10 former)

●NSns01.dnslogic.sg2026-02-27 → 2026-07-04 · 3 obs

○ 2016-12-11 06:47:10
● 2026-02-27 05:32:56
● 2026-07-04 16:59:58

●NSns02.dnslogic.sg2026-02-27 → 2026-07-04 · 3 obs

○ 2016-12-11 06:47:10
● 2026-02-27 05:32:56
● 2026-07-04 16:59:58

●NSns03.dnslogic.sg2026-02-27 → 2026-07-04 · 3 obs

○ 2016-12-11 06:47:10
● 2026-02-27 05:32:56
● 2026-07-04 16:59:58

○NSns1.igs.net2009-01-04 → 2009-01-04 · 3 obs

● 2009-01-04 05:13:38
○ 2015-06-27 06:25:10
○ 2026-07-04 16:59:58

○NSns2.igs.net2009-01-04 → 2009-01-04 · 3 obs

● 2009-01-04 05:13:38
○ 2015-06-27 06:25:10
○ 2026-07-04 16:59:58

○NSns65.worldnic.com2015-06-27 → 2016-12-11 · 5 obs

○ 2009-01-04 05:13:38
● 2015-06-27 06:25:10
● 2016-12-11 06:47:10
○ 2026-02-27 05:32:56
○ 2026-07-04 16:59:58

○NSns66.worldnic.com2015-06-27 → 2016-12-11 · 5 obs

○ 2009-01-04 05:13:38
● 2015-06-27 06:25:10
● 2016-12-11 06:47:10
○ 2026-02-27 05:32:56
○ 2026-07-04 16:59:58

○MXinbound.sysu.com.netsolmail.net2015-06-27 → 2016-12-11 · 5 obs

○ 2009-01-04 05:13:38
● 2015-06-27 06:25:10
● 2016-12-11 06:47:10
○ 2026-02-27 05:32:56
○ 2026-07-04 16:59:58

●MXmail.sysu.com2026-02-27 → 2026-07-04 · 3 obs

○ 2016-12-11 06:47:10
● 2026-02-27 05:32:56
● 2026-07-04 16:59:58

○MXmail2.igs.net2009-01-04 → 2009-01-04 · 3 obs

● 2009-01-04 05:13:38
○ 2015-06-27 06:25:10
○ 2026-07-04 16:59:58

○MXmail3.igs.net2009-01-04 → 2009-01-04 · 3 obs

● 2009-01-04 05:13:38
○ 2015-06-27 06:25:10
○ 2026-07-04 16:59:58

○MXsystems.sysu.com2009-01-04 → 2009-01-04 · 3 obs

● 2009-01-04 05:13:38
○ 2015-06-27 06:25:10
○ 2026-07-04 16:59:58

●A103.255.250.2162026-02-27 → 2026-07-04 · 3 obs

○ 2016-12-11 06:47:10
● 2026-02-27 05:32:56
● 2026-07-04 16:59:58

○A209.17.116.82015-06-27 → 2016-12-11 · 5 obs

○ 2009-01-04 05:13:38
● 2015-06-27 06:25:10
● 2016-12-11 06:47:10
○ 2026-02-27 05:32:56
○ 2026-07-04 16:59:58

○A216.58.2.2502009-01-04 → 2009-01-04 · 3 obs

● 2009-01-04 05:13:38
○ 2015-06-27 06:25:10
○ 2026-07-04 16:59:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, m.gtld-servers.net, d.gtld-servers.net, g.gtld-servers.net...	-
sysu.com	ns01.dnslogic.sg, ns02.dnslogic.sg, ns03.dnslogic.sg	-

✅ Authoritative Response

Server:15.235.163.121

NS records: ns01.dnslogic.sg, ns02.dnslogic.sg, ns03.dnslogic.sg

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sysu.com (unsigned zone)

⏱️ Timing

Total: 755ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.255.250.216`
NS	3	`ns03.dnslogic.sg, ns02.dnslogic.sg...`
MX	1	`mail.sysu.com (pri: 0)`
TXT	1	`v=spf1 ip4:103.255.250.215 ip4:103.255.2`
SOA	1	`ns01.dnslogic.sg noc-metapod8.alerts.en.`

Analysis

Hierarchy

sysu.com is a parent domain of mail.sysu.com.

IP Addresses

sysu.com directs to one IP number, which is 103.255.250.216.

Among the host names that share IP numbers with sysu.com are jtexhibit.com, officeinsingapore.com, mail.specialistcfo.com and two others.

Name Servers

Three name servers are authoritative for sysu.com: ns01.dnslogic.sg, ns02.dnslogic.sg and ns03.dnslogic.sg.

sysu.com shares at least some of its name servers with other domains, including sgsvc.com, mts-consulting.com, wateworks.com and two others.

These name servers are routinely co-deployed with the name servers ns01.en-dns.com, bh1.en-dns.com, ns01.speedns.asia and two others.

Hosts with two IP numbers each:

ns01.dnslogic.sg maps to two IP addresses — 15.235.192.120 and 2402:1f00:8000:800::2335.

ns03.dnslogic.sg maps to two IP addresses — 15.235.163.121 and 2402:1f00:8000:800::2937.

Hosts that resolve to one IP address:

ns02.dnslogic.sg points to the IP address 160.191.238.5.

Mail Servers

sysu.com routes its mail through a single mail server, mail.sysu.com.

There is one IP number for mail.sysu.com: 103.255.250.216.