coldstack.io - robtex.com

coldstack.io

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:ba82🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::6815:125🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.1.37Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.186.130🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSisaac.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3bb1🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRisaac.ns.cloudflare.com
A2803:f800:50::6ca2:c1b1🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRisaac.ns.cloudflare.com
A2a06:98c1:50::ac40:21b1🇺🇸 Cloudflare2a06:98c1:50::/45
PTRisaac.ns.cloudflare.com
A108.162.193.177🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRisaac.ns.cloudflare.com
A172.64.33.177🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRisaac.ns.cloudflare.com
A173.245.59.177🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRisaac.ns.cloudflare.com
NSsavanna.ns.cloudflare.com
A2606:4700:50::a29f:2688🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsavanna.ns.cloudflare.com
A2803:f800:50::6ca2:c288🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRsavanna.ns.cloudflare.com
A2a06:98c1:50::ac40:2288🇺🇸 Cloudflare2a06:98c1:50::/45
PTRsavanna.ns.cloudflare.com
A108.162.194.136🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsavanna.ns.cloudflare.com
A162.159.38.136Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsavanna.ns.cloudflare.com
A172.64.34.136🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsavanna.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4023:c06::1b🇺🇸 Google2607:f8b0::/32
PTRdz-in-f27.1e100.net
A142.250.141.27🇺🇸 Google142.250.141.0/24
PTRdd-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2800:3f0:4003:c0f::1a🇨🇱 Google2800:3f0:4003::/48
A108.177.123.27🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f27.1e100.net
MXalt2.aspmx.l.google.com(5)
A2607:f8b0:4023:1015::1b🇺🇸 Google2607:f8b0::/32
PTRyudfwta-in-f27.1e100.net
A172.253.135.27🇺🇸 Google172.253.135.0/24
PTRyudfwta-in-f27.1e100.net
MXalt3.aspmx.l.google.com(10)
A2607:f8b0:4023:3003::1a🇺🇸 Google2607:f8b0::/32
PTRyulnkjt-in-f26.1e100.net
A172.253.145.27🇺🇸 Google172.253.145.0/24
PTRyulnkjt-in-f27.1e100.net
MXalt4.aspmx.l.google.com(10)
A2607:f8b0:4001:c70::1b🇺🇸 Google2607:f8b0:4001::/48
PTRyucbful-in-f27.1e100.net
A192.178.209.27🇺🇸 Google192.178.209.0/24
PTRyucbful-in-f27.1e100.net
MXvdpjusrvj7ujjtu274i7utuhu46kjqcgxncgpuxgcjdg3qhdxj3a.mx-verification.google.com(15)
TXT14e16b20-095b-4ab4-b9a6-e077de6161b6
TXTbcdc3cae-c394-411d-8962-e2251966b7f0=b1380fd57a7f2e79121c2a31e8f204734a2fbac1...
TXTdetectify-verification=5470151cb6b492dbdf7a1631a739a99a
TXTv=spf1 a mx include:_spf.mlsend.com ?all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.1.37, 172.67.186.130
IPv62606:4700:3032::ac43:ba82, 2606:4700:3035::6815:125
SOAisaac.ns.cloudflare.comdns@cloudflare.com serial=2399625593

io

DNSSEC🔒 Signed (DS record present)
NSa0.nic.io ⭐
NSa2.nic.io
NSb0.nic.io
NSc0.nic.io
SOAa0.nic.iohostmaster@donuts.email serial=1774539797

Same first word

coldstack.io

DNS History

13 records (12 active, 1 former)

NSisaac.ns.cloudflare.comsavanna.ns.cloudflare.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comvdpjusrvj7ujjtu274i7utuhu46kjqcgxncgpuxgcjdg3qhdxj3a.mx-verification.google.comA104.21.1.37172.67.186.1302606:4700:3032::ac43:ba822606:4700:3035::6815:1252606:4700:130:436c:6f75:6466:6c61:7265
●NSisaac.ns.cloudflare.com2026-02-16 → 2026-03-26 · 2 obs
● 2026-02-16 09:30:18
● 2026-03-26 16:13:12
●NSsavanna.ns.cloudflare.com2026-02-16 → 2026-03-26 · 2 obs
● 2026-02-16 09:30:18
● 2026-03-26 16:13:12
●MXalt1.aspmx.l.google.com2026-02-16 → 2026-03-26 · 2 obs
● 2026-02-16 09:30:18
● 2026-03-26 16:13:12
●MXalt2.aspmx.l.google.com2026-02-16 → 2026-03-26 · 2 obs
● 2026-02-16 09:30:18
● 2026-03-26 16:13:12
●MXalt3.aspmx.l.google.com2026-02-16 → 2026-03-26 · 2 obs
● 2026-02-16 09:30:18
● 2026-03-26 16:13:12
●MXalt4.aspmx.l.google.com2026-02-16 → 2026-03-26 · 2 obs
● 2026-02-16 09:30:18
● 2026-03-26 16:13:12
●MXaspmx.l.google.com2026-02-16 → 2026-03-26 · 2 obs
● 2026-02-16 09:30:18
● 2026-03-26 16:13:12
●MXvdpjusrvj7ujjtu274i7utuhu46kjqcgxncgpuxgcjdg3qhdxj3a.mx-verification.google.com2026-02-16 → 2026-03-26 · 2 obs
● 2026-02-16 09:30:18
● 2026-03-26 16:13:12
●A104.21.1.372026-02-16 → 2026-03-26 · 2 obs
● 2026-02-16 09:30:18
● 2026-03-26 16:13:12
●A172.67.186.1302026-02-16 → 2026-03-26 · 2 obs
● 2026-02-16 09:30:18
● 2026-03-26 16:13:12
○A2606:4700:130:436c:6f75:6466:6c61:72652026-03-15 → 2026-03-15 · 4 obs
○ 2026-02-24 14:41:48
● 2026-03-15 11:33:30
○ 2026-03-26 16:13:10
○ 2026-03-26 16:13:12
●A2606:4700:3032::ac43:ba822026-02-16 → 2026-03-26 · 5 obs
● 2026-02-16 09:30:18
● 2026-02-24 14:41:48
○ 2026-03-15 11:33:30
● 2026-03-26 16:13:10
● 2026-03-26 16:13:12
●A2606:4700:3035::6815:1252026-02-16 → 2026-03-26 · 5 obs
● 2026-02-16 09:30:18
● 2026-02-24 14:41:48
○ 2026-03-15 11:33:30
● 2026-03-26 16:13:10
● 2026-03-26 16:13:12

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ioa0.nic.io, c0.nic.io, b0.nic.io, a2.nic.io-
coldstack.ioisaac.ns.cloudflare.com, savanna.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.34.136

NS records: isaac.ns.cloudflare.com, savanna.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coldstack.io (unsigned zone)

⏱️ Timing

Total: 481ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.1.37, 172.67.186.130
AAAA22606:4700:3035::6815:125, 2606:4700:3032::ac43:ba82
NS2isaac.ns.cloudflare.com, savanna.ns.cloudflare.com
MX6aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...
TXT414e16b20-095b-4ab4-b9a6-e077de6161b6, bcdc3cae-c394-411d-8962-e2251966b7f0=b13...
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1isaac.ns.cloudflare.com dns.cloudflare.c

Analysis

IP Addresses

coldstack.io points to four IP numbers: 2606:4700:3032::ac43:ba82, 2606:4700:3035::6815:125, 104.21.1.37 and 172.67.186.130.

Other host names, for instance szaxjr.com, highrisenetwork.com, hookupsearch.org, www.bb(0x787878)x.com and casinoway.ca share IP numbers with coldstack.io.

Name Servers

Delegation for coldstack.io rests with two name servers, isaac.ns.cloudflare.com and savanna.ns.cloudflare.com.

coldstack.io shares the same name server setup as other domains, including benjaminconnelly.com, slc.vn, syspal.com, cloudplus.ru and mikesovi.com.

coldstack.io at least partially shares name servers with other domains, for instance aquaart.su, roofing.ca, academic-master.com, 1milionedifan.it and mibase.com.au.

these name servers are commonly used with derek.ns.cloudflare.com, ali.ns.cloudflare.com and meera.ns.cloudflare.com.

Host names with six IP numbers: isaac.ns.cloudflare.com points to: 2606:4700:58::adf5:3bb1, 2803:f800:50::6ca2:c1b1, 2a06:98c1:50::ac40:21b1, 108.162.193.177, 172.64.33.177 and 173.245.59.177. savanna.ns.cloudflare.com points to: 2606:4700:50::a29f:2688, 2803:f800:50::6ca2:c288, 2a06:98c1:50::ac40:2288, 108.162.194.136, 162.159.38.136 and 172.64.34.136.

Mail Servers

coldstack.io is handled by six mail servers: aspmx.l.google.com, vdpjusrvj7ujjtu274i7utuhu46kjqcgxncgpuxgcjdg3qhdxj3a.mx-verification.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

coldstack.io shares mail servers with other domains at least in part, for instance ns500758.ns500698.ns500758.ns500698.ns500698.ns500736.ns500736.ns500698.ns500698.ns500735.ns500576.ns500708.ns500698.ns500619.trackreceptor.com, sinomusica.com, ns500698.ns500758.ns500759.ns500758.ns500698.ns500698.ns500736.ns500735.ns500735.ns500698.ns500736.ns500735.ns500576.ns500619.ns500686.ns500619.ns500576.trackreceptor.com, ns500742.ns500754.ns500754.ns500754.ns500754.ns500742.ns500704.ns500671.ns500678.ns500649.ns500666.ns500131.lustychickser.com and ns500758.ns500698.ns500759.ns500735.ns500735.ns500736.ns500735.ns500576.ns500698.ns500698.ns500708.ns500619.ns500576.ns500576.ns500652.ns500652.tracksymphony.com.

these mail servers are often used with aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IP numbers:

aspmx.l.google.com points to 2607:f8b0:4023:c06::1b and 142.250.141.27.

alt1.aspmx.l.google.com points to 2800:3f0:4003:c0f::1a and 108.177.123.27.

alt2.aspmx.l.google.com points to 2607:f8b0:4023:1015::1b and 172.253.135.27.

alt3.aspmx.l.google.com points to 2607:f8b0:4023:3003::1a and 172.253.145.27.

alt4.aspmx.l.google.com points to 2607:f8b0:4001:c70::1b and 192.178.209.27.