otstring.com - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`otstring.com`

DNSSEC	⚠️ Not signed
A	18.239.168.45^{🇺🇸 Amazon18.239.168.0/23}
		PTR	`server-18-239-168-45.bos50.r.cloudfront.net`
A	18.239.168.92^{🇺🇸 Amazon18.239.168.0/23}
A	18.239.168.93^{🇺🇸 Amazon18.239.168.0/23}
A	18.239.168.101^{🇺🇸 Amazon18.239.168.0/23}
NS	`ns-1219.awsdns-24.org` ⭐
		A	2600:9000:5304:c300::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1219.awsdns-24.org`
		A	205.251.196.195^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1219.awsdns-24.org`
NS	`ns-135.awsdns-16.com`
		A	2600:9000:5300:8700::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-135.awsdns-16.com`
		A	205.251.192.135^{🇺🇸 Amazon205.251.192.0/24 prefix}
NS	`ns-1745.awsdns-26.co.uk`
		A	2600:9000:5306:d100::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1745.awsdns-26.co.uk`
		A	205.251.198.209^{🇺🇸 Amazon205.251.198.0/24 prefix}
NS	`ns-946.awsdns-54.net`
		A	2600:9000:5303:b200::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-946.awsdns-54.net`
		A	205.251.195.178^{🇺🇸 Amazon205.251.195.0/24 prefix}
MX	`mx1.feishu.cn` ⭐
		A	52.220.106.220^{🇸🇬 Amazon52.220.0.0/15 SIN prefix}
			PTR	`ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com`
MX	`mx2.feishu.cn`⁽⁵⁾
		A	101.126.58.225^{🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	122.14.229.0^{🇨🇳 CHINAMOBILE-CN122.14.224.0/20}
MX	`mx3.feishu.cn`⁽¹⁰⁾
		A	52.220.106.220^{🇸🇬 Amazon52.220.0.0/15 SIN prefix}
			PTR	`ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com`
		A	101.126.58.225^{🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	122.14.229.0^{🇨🇳 CHINAMOBILE-CN122.14.224.0/20}
TXT	`google-site-verification=G9QXGTdygJ4dd46PmLyhg5PlxCgy7OjtdNRmCTnsvMI`
TXT	`v=spf1 +include:_netblocks.m.feishu.cn -all`
TXT	`verification-code-site-App_feishu=pbcZcdNrXqskQt43scxk`
SOA	`ns-1219.awsdns-24.org`awsdns-hostmaster@amazon.com serial=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=1792746201

Same first word

otstring.com

Similar names

Previous names

Next names

DNS History

19 records (11 active, 8 former)

●NSns-1219.awsdns-24.org2026-09-29 → 2026-10-23 · 2 obs

● 2026-09-29 22:35:48
● 2026-10-23 09:27:12

●NSns-135.awsdns-16.com2026-09-29 → 2026-10-23 · 2 obs

● 2026-09-29 22:35:48
● 2026-10-23 09:27:12

●NSns-1745.awsdns-26.co.uk2026-09-29 → 2026-10-23 · 2 obs

● 2026-09-29 22:35:48
● 2026-10-23 09:27:12

●NSns-946.awsdns-54.net2026-09-29 → 2026-10-23 · 2 obs

● 2026-09-29 22:35:48
● 2026-10-23 09:27:12

●MXmx1.feishu.cn2026-09-29 → 2026-10-23 · 2 obs

● 2026-09-29 22:35:48
● 2026-10-23 09:27:12

●MXmx2.feishu.cn2026-09-29 → 2026-10-23 · 2 obs

● 2026-09-29 22:35:48
● 2026-10-23 09:27:12

●MXmx3.feishu.cn2026-09-29 → 2026-10-23 · 2 obs

● 2026-09-29 22:35:48
● 2026-10-23 09:27:12

●A18.239.168.1012026-10-22 → 2026-10-23 · 3 obs

○ 2026-10-21 10:55:36
● 2026-10-22 00:24:42
● 2026-10-23 09:27:12

●A18.239.168.452026-10-22 → 2026-10-23 · 3 obs

○ 2026-10-21 10:55:36
● 2026-10-22 00:24:42
● 2026-10-23 09:27:12

●A18.239.168.922026-10-22 → 2026-10-23 · 3 obs

○ 2026-10-21 10:55:36
● 2026-10-22 00:24:42
● 2026-10-23 09:27:12

●A18.239.168.932026-10-22 → 2026-10-23 · 3 obs

○ 2026-10-21 10:55:36
● 2026-10-22 00:24:42
● 2026-10-23 09:27:12

○A52.85.118.292026-09-29 → 2026-09-29 · 3 obs

● 2026-09-29 22:35:48
○ 2026-10-21 10:55:36
○ 2026-10-23 09:27:12

○A52.85.118.302026-09-29 → 2026-09-29 · 3 obs

● 2026-09-29 22:35:48
○ 2026-10-21 10:55:36
○ 2026-10-23 09:27:12

○A52.85.118.572026-09-29 → 2026-09-29 · 3 obs

● 2026-09-29 22:35:48
○ 2026-10-21 10:55:36
○ 2026-10-23 09:27:12

○A52.85.118.82026-09-29 → 2026-09-29 · 3 obs

● 2026-09-29 22:35:48
○ 2026-10-21 10:55:36
○ 2026-10-23 09:27:12

○A99.84.215.122026-10-21 → 2026-10-21 · 4 obs

○ 2026-09-29 22:35:48
● 2026-10-21 10:55:36
○ 2026-10-22 00:24:42
○ 2026-10-23 09:27:12

○A99.84.215.272026-10-21 → 2026-10-21 · 4 obs

○ 2026-09-29 22:35:48
● 2026-10-21 10:55:36
○ 2026-10-22 00:24:42
○ 2026-10-23 09:27:12

○A99.84.215.302026-10-21 → 2026-10-21 · 4 obs

○ 2026-09-29 22:35:48
● 2026-10-21 10:55:36
○ 2026-10-22 00:24:42
○ 2026-10-23 09:27:12

○A99.84.215.902026-10-21 → 2026-10-21 · 4 obs

○ 2026-09-29 22:35:48
● 2026-10-21 10:55:36
○ 2026-10-22 00:24:42
○ 2026-10-23 09:27:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
otstring.com	ns-135.awsdns-16.com, ns-946.awsdns-54.net, ns-1745.awsdns-26.co.uk, ns-1219.awsdns-24.org	2 records

✅ Authoritative Response

Server:205.251.196.195

NS records: ns-135.awsdns-16.com, ns-946.awsdns-54.net, ns-1745.awsdns-26.co.uk, ns-1219.awsdns-24.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for otstring.com (unsigned zone)

⏱️ Timing

Total: 1698ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`18.239.168.92, 18.239.168.101...`
NS	4	`ns-1219.awsdns-24.org, ns-135.awsdns-16.com...`
MX	3	`mx1.feishu.cn (pri: 1), mx3.feishu.cn (pri: 10)...`
TXT	3	`google-site-verification=G9QXGTdygJ4dd46, v=spf1 +include:_netblocks.m.feishu.cn -...`
SOA	1	`ns-1219.awsdns-24.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-135.awsdns-16.com, ns-135.awsdns-16.com)

Analysis

IP Addresses

otstring.com points to the four IP addresses 18.239.168.45, 18.239.168.92, 18.239.168.93 and 18.239.168.101.

Two other host names, along with hellasdirect.com.cy, dv66igs1t860r.amplifyapp.com and hestyadesign.com, also share IP numbers with otstring.com.

Name Servers

The NS records for otstring.com point to four name servers: ns-135.awsdns-16.com, ns-946.awsdns-54.net, ns-1219.awsdns-24.org and ns-1745.awsdns-26.co.uk.

At least some of otstring.com's name servers are shared with other domains, for example fritzgiftsetc.com, botsablyai.com, vigilzorg.nl and two more.

Four hostnames, each resolving to a pair of IP addresses: ns-135.awsdns-16.com directs to 205.251.192.135 and 2600:9000:5300:8700::1; ns-946.awsdns-54.net directs to 205.251.195.178 and 2600:9000:5303:b200::1; ns-1219.awsdns-24.org directs to 205.251.196.195 and 2600:9000:5304:c300::1; ns-1745.awsdns-26.co.uk directs to 205.251.198.209 and 2600:9000:5306:d100::1.

Mail Servers

The MX records for otstring.com list three mail servers: mx1.feishu.cn, mx2.feishu.cn and mx3.feishu.cn.

There is at least a partial MX overlap between otstring.com and other domains, including lamimosabeauty.com, zdjjtech.com, techpodfest.com and two others.

Hostnames that map to three IP numbers:

The hostname mx3.feishu.cn points to 52.220.106.220, 101.126.58.225 and 122.14.229.0.

Host names that have two IP addresses:

mx2.feishu.cn resolves to two addresses: 101.126.58.225 and 122.14.229.0.

Host names that point to one IP address:

The hostname mx1.feishu.cn resolves to 52.220.106.220.

mx3.feishu.cn along with mx1.feishu.cn each resolve to 52.220.106.220 IP addresses.

mx3.feishu.cn along with mx2.feishu.cn each resolve to 101.126.58.225 IP addresses.

mx3.feishu.cn along with mx2.feishu.cn each resolve to 122.14.229.0 IP addresses.