`boulderstartups.net`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:b7f4^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:12f5^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.18.245^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.183.244^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`jim.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b7d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jim.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c17d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jim.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:217d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jim.ns.cloudflare.com`
		A	108.162.193.125^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jim.ns.cloudflare.com`
		A	172.64.33.125^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jim.ns.cloudflare.com`
		A	173.245.59.125^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jim.ns.cloudflare.com`
NS	`kate.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a7c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kate.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c07c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kate.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:207c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kate.ns.cloudflare.com`
		A	108.162.192.124^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kate.ns.cloudflare.com`
		A	172.64.32.124^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kate.ns.cloudflare.com`
		A	173.245.58.124^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kate.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.18.245, 172.67.183.244
		IPv6 hints	2606:4700:3032::ac43:b7f4, 2606:4700:3035::6815:12f5
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=67, name=cloudflare-ech.com
SOA	`jim.ns.cloudflare.com`dns@cloudflare.com serial=2401100939

`net`

	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=1775614532

Same first word

boulderstartups.com

boulderstartups.net

DNS History

24 records (6 active, 18 former)

●NSjim.ns.cloudflare.com2026-03-12 → 2026-04-08 · 2 obs

● 2026-03-12 13:51:36
● 2026-04-08 02:36:00

●NSkate.ns.cloudflare.com2026-03-12 → 2026-04-08 · 2 obs

● 2026-03-12 13:51:36
● 2026-04-08 02:36:00

●A104.21.18.2452026-03-12 → 2026-04-08 · 6 obs

○ 2017-04-23 23:46:10
● 2026-03-12 13:51:36
● 2026-03-17 05:58:04
○ 2026-03-18 16:41:16
● 2026-04-07 23:28:02
● 2026-04-08 02:36:00

○A107.20.178.1332015-10-30 → 2015-10-30 · 4 obs

○ 2015-06-03 10:44:40
● 2015-10-30 06:31:34
○ 2016-01-16 12:35:34
○ 2026-04-08 02:36:00

○A107.20.218.712016-09-17 → 2016-09-17 · 4 obs

○ 2016-04-04 14:21:34
● 2016-09-17 12:47:28
○ 2017-04-23 23:46:10
○ 2026-04-08 02:36:00

○A107.22.243.2272017-04-23 → 2017-04-23 · 4 obs

○ 2016-09-17 12:47:28
● 2017-04-23 23:46:10
○ 2026-03-12 13:51:36
○ 2026-04-08 02:36:00

●A172.67.183.2442026-03-12 → 2026-04-08 · 6 obs

○ 2017-04-23 23:46:10
● 2026-03-12 13:51:36
● 2026-03-17 05:58:04
○ 2026-03-18 16:41:16
● 2026-04-07 23:28:02
● 2026-04-08 02:36:00

○A188.114.96.02026-03-18 → 2026-03-18 · 4 obs

○ 2026-03-17 05:58:04
● 2026-03-18 16:41:16
○ 2026-04-07 23:28:02
○ 2026-04-08 02:36:00

○A188.114.97.02026-03-18 → 2026-03-18 · 4 obs

○ 2026-03-17 05:58:04
● 2026-03-18 16:41:16
○ 2026-04-07 23:28:02
○ 2026-04-08 02:36:00

○A23.21.161.1482015-06-03 → 2015-06-03 · 3 obs

● 2015-06-03 10:44:40
○ 2026-03-12 13:51:36
○ 2026-04-08 02:36:00

○A23.23.175.1052016-01-16 → 2016-01-16 · 4 obs

○ 2015-10-30 06:31:34
● 2016-01-16 12:35:34
○ 2016-04-04 14:21:34
○ 2026-04-08 02:36:00

●A2606:4700:3032::ac43:b7f42026-03-12 → 2026-04-08 · 6 obs

○ 2017-04-23 23:46:10
● 2026-03-12 13:51:36
● 2026-03-17 05:58:04
○ 2026-03-18 16:41:16
● 2026-04-07 23:28:02
● 2026-04-08 02:36:00

●A2606:4700:3035::6815:12f52026-03-12 → 2026-04-08 · 6 obs

○ 2017-04-23 23:46:10
● 2026-03-12 13:51:36
● 2026-03-17 05:58:04
○ 2026-03-18 16:41:16
● 2026-04-07 23:28:02
● 2026-04-08 02:36:00

○A2a06:98c1:3120::2026-03-18 → 2026-03-18 · 4 obs

○ 2026-03-17 05:58:04
● 2026-03-18 16:41:16
○ 2026-04-07 23:28:02
○ 2026-04-08 02:36:00

○A2a06:98c1:3121::2026-03-18 → 2026-03-18 · 4 obs

○ 2026-03-17 05:58:04
● 2026-03-18 16:41:16
○ 2026-04-07 23:28:02
○ 2026-04-08 02:36:00

○A50.17.220.2192015-06-03 → 2015-06-03 · 3 obs

● 2015-06-03 10:44:40
○ 2026-03-12 13:51:36
○ 2026-04-08 02:36:00

○A50.17.253.2522016-04-04 → 2016-04-04 · 4 obs

○ 2016-01-16 12:35:34
● 2016-04-04 14:21:34
○ 2016-09-17 12:47:28
○ 2026-04-08 02:36:00

○A54.243.225.442015-06-03 → 2015-06-03 · 3 obs

● 2015-06-03 10:44:40
○ 2026-03-12 13:51:36
○ 2026-04-08 02:36:00

○A54.243.47.2392015-06-03 → 2015-06-03 · 3 obs

● 2015-06-03 10:44:40
○ 2026-03-12 13:51:36
○ 2026-04-08 02:36:00

○A54.243.73.2272015-06-03 → 2015-06-03 · 3 obs

● 2015-06-03 10:44:40
○ 2026-03-12 13:51:36
○ 2026-04-08 02:36:00

○A54.243.88.1592015-06-03 → 2015-06-03 · 3 obs

● 2015-06-03 10:44:40
○ 2026-03-12 13:51:36
○ 2026-04-08 02:36:00

○A75.101.151.1182015-06-03 → 2015-06-03 · 3 obs

● 2015-06-03 10:44:40
○ 2026-03-12 13:51:36
○ 2026-04-08 02:36:00

○CNAMEbuiltinmtl.herokuapp.com2015-06-03 → 2017-04-23 · 4 obs

● 2015-06-03 10:44:40
● 2017-04-23 23:46:10
○ 2026-03-12 13:51:36
○ 2026-04-08 02:36:00

○CNAMEus-east-1-a.route.herokuapp.com2015-10-30 → 2017-04-23 · 5 obs

○ 2015-06-03 10:44:40
● 2015-10-30 06:31:34
● 2017-04-23 23:46:10
○ 2026-03-12 13:51:36
○ 2026-04-08 02:36:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	i.gtld-servers.net, j.gtld-servers.net, b.gtld-servers.net, d.gtld-servers.net...	-
boulderstartups.net	jim.ns.cloudflare.com, kate.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.59.125

NS records: jim.ns.cloudflare.com, kate.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for boulderstartups.net (unsigned zone)

⏱️ Timing

Total: 312ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.183.244, 104.21.18.245`
AAAA	2	`2606:4700:3035::6815:12f5, 2606:4700:3032::ac43:b7f4`
NS	2	`jim.ns.cloudflare.com, kate.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`jim.ns.cloudflare.com dns.cloudflare.com`

Analysis

IP Addresses

boulderstartups.net points to four IP numbers: 2606:4700:3032::ac43:b7f4, 2606:4700:3035::6815:12f5, 104.21.18.245 and 172.67.183.244.

Other host names, for instance ncncree.com, mk1115.com, vnoeytklzthqu.website, natalieschoch.com and vectorplus360.pics share IP numbers with boulderstartups.net.

Name Servers

boulderstartups.net is delegated to two name servers: jim.ns.cloudflare.com and kate.ns.cloudflare.com.

boulderstartups.net uses the same name server setup as other domains, for instance aboutnet.org, kcshosting.net, solutionorientedcounselling.ca, idirectories.co.uk and invitation.codes.

boulderstartups.net shares name servers with other domains at least partially, for instance veloclube.com.br, msbautomotive.com, acsglobal.ro, epiphanycaringhaven.com and 29qm.com.

Host names with six IP numbers: jim.ns.cloudflare.com points to 2606:4700:58::adf5:3b7d, 2803:f800:50::6ca2:c17d, 2a06:98c1:50::ac40:217d, 108.162.193.125, 172.64.33.125 and 173.245.59.125; kate.ns.cloudflare.com points to 2606:4700:50::adf5:3a7c, 2803:f800:50::6ca2:c07c, 2a06:98c1:50::ac40:207c, 108.162.192.124, 172.64.32.124 and 173.245.58.124.

boulderstartups.net - robtex.com