21startups.com - dns.ninja

21startups.com

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:8097🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::6815:214🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.2.20Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.128.151🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSdolly.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a62🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdolly.ns.cloudflare.com
A2803:f800:50::6ca2:c062🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdolly.ns.cloudflare.com
A2a06:98c1:50::ac40:2062🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdolly.ns.cloudflare.com
A108.162.192.98🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdolly.ns.cloudflare.com
A172.64.32.98🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdolly.ns.cloudflare.com
A173.245.58.98🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdolly.ns.cloudflare.com
NSelmo.ns.cloudflare.com
A2606:4700:58::adf5:3ba3🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelmo.ns.cloudflare.com
A2803:f800:50::6ca2:c1a3🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRelmo.ns.cloudflare.com
A2a06:98c1:50::ac40:21a3🇺🇸 Cloudflare2a06:98c1:50::/45
PTRelmo.ns.cloudflare.com
A108.162.193.163🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelmo.ns.cloudflare.com
A172.64.33.163🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelmo.ns.cloudflare.com
A173.245.59.163🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelmo.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.2.20, 172.67.128.151
IPv6 hints2606:4700:3031::ac43:8097, 2606:4700:3033::6815:214
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=7, name=cloudflare-ech.com
SOAdolly.ns.cloudflare.comdns@cloudflare.com serial=2407741637

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1785224147

Same first word

21startups.com

Similar names

12startups.com
12startups.de
startups21.com

DNS History

13 records (6 active, 7 former)

2017201820192020202120222023202420252026NSdolly.ns.cloudflare.comelmo.ns.cloudflare.comns1.vdconline.vnns2.vdconline.vnA104.21.2.20172.67.128.1512606:4700:3031::ac43:80972606:4700:3033::6815:214188.114.96.0188.114.97.02606:4700:3036::ac43:80972a06:98c1:3120::2a06:98c1:3121::
●NSdolly.ns.cloudflare.com2026-02-18 → 2026-07-28 · 3 obs
○ 2017-08-06 22:51:28
● 2026-02-18 19:07:34
● 2026-07-28 07:43:04
●NSelmo.ns.cloudflare.com2026-02-18 → 2026-07-28 · 3 obs
○ 2017-08-06 22:51:28
● 2026-02-18 19:07:34
● 2026-07-28 07:43:04
○NSns1.vdconline.vn2016-12-13 → 2016-12-13 · 3 obs
● 2016-12-13 18:44:32
○ 2017-08-06 22:51:28
○ 2026-07-28 07:43:04
○NSns2.vdconline.vn2016-12-13 → 2016-12-13 · 3 obs
● 2016-12-13 18:44:32
○ 2017-08-06 22:51:28
○ 2026-07-28 07:43:04
●A104.21.2.202026-02-18 → 2026-07-28 · 4 obs
● 2026-02-18 19:07:34
○ 2026-03-02 20:11:56
● 2026-04-05 15:21:10
● 2026-07-28 07:43:04
●A172.67.128.1512026-02-18 → 2026-07-28 · 4 obs
● 2026-02-18 19:07:34
○ 2026-03-02 20:11:56
● 2026-04-05 15:21:10
● 2026-07-28 07:43:04
○A188.114.96.02026-03-02 → 2026-03-02 · 4 obs
○ 2026-02-18 19:07:34
● 2026-03-02 20:11:56
○ 2026-04-05 15:21:10
○ 2026-07-28 07:43:04
○A188.114.97.02026-03-02 → 2026-03-02 · 4 obs
○ 2026-02-18 19:07:34
● 2026-03-02 20:11:56
○ 2026-04-05 15:21:10
○ 2026-07-28 07:43:04
●A2606:4700:3031::ac43:80972026-07-15 → 2026-07-28 · 3 obs
○ 2026-06-02 09:18:44
● 2026-07-15 03:18:00
● 2026-07-28 07:43:04
●A2606:4700:3033::6815:2142026-02-18 → 2026-07-28 · 4 obs
● 2026-02-18 19:07:34
○ 2026-03-02 20:11:56
● 2026-04-05 15:21:10
● 2026-07-28 07:43:04
○A2606:4700:3036::ac43:80972026-02-18 → 2026-06-02 · 6 obs
● 2026-02-18 19:07:34
○ 2026-03-02 20:11:56
● 2026-04-05 15:21:10
● 2026-06-02 09:18:44
○ 2026-07-15 03:18:00
○ 2026-07-28 07:43:04
○A2a06:98c1:3120::2026-03-02 → 2026-03-02 · 4 obs
○ 2026-02-18 19:07:34
● 2026-03-02 20:11:56
○ 2026-04-05 15:21:10
○ 2026-07-28 07:43:04
○A2a06:98c1:3121::2026-03-02 → 2026-03-02 · 4 obs
○ 2026-02-18 19:07:34
● 2026-03-02 20:11:56
○ 2026-04-05 15:21:10
○ 2026-07-28 07:43:04

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comj.gtld-servers.net, l.gtld-servers.net, a.gtld-servers.net, f.gtld-servers.net...-
21startups.comdolly.ns.cloudflare.com, elmo.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.163

NS records: dolly.ns.cloudflare.com, elmo.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21startups.com (unsigned zone)

⏱️ Timing

Total: 167ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.2.20, 172.67.128.151
AAAA22606:4700:3031::ac43:8097, 2606:4700:3033::6815:214
NS2dolly.ns.cloudflare.com, elmo.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1dolly.ns.cloudflare.com dns.cloudflare.c

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (dolly.ns.cloudflare.com, dolly.ns.cloudflare.com, dolly.ns.cloudflare.com...)

Analysis

IP Addresses

21startups.com has four IP addresses: 104.21.2.20, 172.67.128.151, 2606:4700:3031::ac43:8097 and 2606:4700:3033::6815:214.

Among the host names that share IP numbers with 21startups.com are miliksaya.it.com, mail.ftcare-i.com, mail.pizzalenuo.com and two others.

Name Servers

21startups.com uses two name servers for its delegation: dolly.ns.cloudflare.com and elmo.ns.cloudflare.com.

21startups.com has the same name server delegation as a number of other domains, such as stahash.com, dentacarts.com, ecteco.com and two more.

21startups.com has at least partial name server overlap with other domains, such as indocanadianbus.com, nuocmamongmap.vn, studiolegalemartignetti.it and two others.

These name servers are routinely co-deployed with the name servers jason.ns.cloudflare.com, dom.ns.cloudflare.com, tessa.ns.cloudflare.com and two others.

Host names resolving to 6 IP numbers:

Hostname dolly.ns.cloudflare.com directs to 108.162.192.98, 172.64.32.98 and 173.245.58.98 along with 3 other IP addresses.

Hostname elmo.ns.cloudflare.com directs to 108.162.193.163, 172.64.33.163 and 173.245.59.163 along with 3 other IP addresses.