capstacker.io - robtex.com

capstacker.io

DNSSEC⚠️ Not signed
A54.81.73.103🇺🇸 Amazon54.80.0.0/14 EC2 IAD prefix
PTRec2-54-81-73-103.compute-1.amazonaws.com
NSns-1302.awsdns-34.org ⭐
A2600:9000:5305:1600::1🇺🇸 Amazon2600:9000:5305::/48 - CloudFront
PTRns-1302.awsdns-34.org
A205.251.197.22🇺🇸 Amazon205.251.197.0/24 prefix
PTRns-1302.awsdns-34.org
NSns-1759.awsdns-27.co.uk
A2600:9000:5306:df00::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront
PTRns-1759.awsdns-27.co.uk
A205.251.198.223🇺🇸 Amazon205.251.198.0/24 prefix
PTRns-1759.awsdns-27.co.uk
NSns-232.awsdns-29.com
A2600:9000:5300:e800::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront
PTRns-232.awsdns-29.com
A205.251.192.232🇺🇸 Amazon205.251.192.0/24 prefix
PTRns-232.awsdns-29.com
NSns-780.awsdns-33.net
A2600:9000:5303:c00::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront
PTRns-780.awsdns-33.net
A205.251.195.12🇺🇸 Amazon205.251.195.0/24 prefix
PTRns-780.awsdns-33.net
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c19::1b🇺🇸 Google2607:f8b0:4004::/48
PTRbk-in-f27.1e100.net
A172.253.62.27🇺🇸 Google172.253.62.0/24
PTRbc-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2607:f8b0:4003:c30::1b🇺🇸 Google2607:f8b0:4003::/48
PTRyutulis-in-f27.1e100.net
A74.125.27.26🇺🇸 Google74.125.27.0/24
PTRyutulis-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2607:f8b0:4001:c70::1a🇺🇸 Google2607:f8b0:4001::/48
PTRyucbful-in-f26.1e100.net
A192.178.209.26🇺🇸 Google192.178.209.0/24
PTRyucbful-in-f26.1e100.net
MXalt3.aspmx.l.google.com(10)
A2607:f8b0:4024:c0d::1b🇺🇸 Google2607:f8b0::/32
PTRmj-in-f27.1e100.net
A192.178.152.26🇺🇸 Google192.178.152.0/24
PTRmj-in-f26.1e100.net
MXalt4.aspmx.l.google.com(10)
A2607:f8b0:4023:403::1a🇺🇸 Google2607:f8b0::/32
PTRgg-in-f26.1e100.net
A142.250.96.27🇺🇸 Google142.250.96.0/24
PTRgg-in-f27.1e100.net
TXTgoogle-site-verification=e4bjZSI_k2dTwCZZp4Mdb1cXs9m5fBBs5UaDnAgWkeM
TXTv=spf1 include:_spf.google.com ~all
SOAns-1302.awsdns-34.orgawsdns-hostmaster@amazon.com serial=1

io

DNSSEC🔒 Signed (DS record present)
NSa0.nic.io ⭐
NSa2.nic.io
NSb0.nic.io
NSc0.nic.io
SOAa0.nic.iohostmaster@donuts.email serial=1773494468

Subdomains

app.capstacker.io
api.capstacker.io

Same first word

capstacker.io

Similar names

capetracks.nl
spacetrack.org
pacerstack.com
spacetrack.eu

DNS History

10 records (10 active, 0 former)

NSns-1302.awsdns-34.orgns-1759.awsdns-27.co.ukns-232.awsdns-29.comns-780.awsdns-33.netMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comA54.81.73.103
●NSns-1302.awsdns-34.org2026-02-17 → 2026-03-24 · 2 obs
● 2026-02-17 12:37:00
● 2026-03-24 04:05:02
●NSns-1759.awsdns-27.co.uk2026-02-17 → 2026-03-24 · 2 obs
● 2026-02-17 12:37:00
● 2026-03-24 04:05:02
●NSns-232.awsdns-29.com2026-02-17 → 2026-03-24 · 2 obs
● 2026-02-17 12:37:00
● 2026-03-24 04:05:02
●NSns-780.awsdns-33.net2026-02-17 → 2026-03-24 · 2 obs
● 2026-02-17 12:37:00
● 2026-03-24 04:05:02
●MXalt1.aspmx.l.google.com2026-02-17 → 2026-03-24 · 2 obs
● 2026-02-17 12:37:00
● 2026-03-24 04:05:02
●MXalt2.aspmx.l.google.com2026-02-17 → 2026-03-24 · 2 obs
● 2026-02-17 12:37:00
● 2026-03-24 04:05:02
●MXalt3.aspmx.l.google.com2026-02-17 → 2026-03-24 · 2 obs
● 2026-02-17 12:37:00
● 2026-03-24 04:05:02
●MXalt4.aspmx.l.google.com2026-02-17 → 2026-03-24 · 2 obs
● 2026-02-17 12:37:00
● 2026-03-24 04:05:02
●MXaspmx.l.google.com2026-02-17 → 2026-03-24 · 2 obs
● 2026-02-17 12:37:00
● 2026-03-24 04:05:02
●A54.81.73.1032026-02-17 → 2026-03-24 · 2 obs
● 2026-02-17 12:37:00
● 2026-03-24 04:05:02

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ioc0.nic.io, a2.nic.io, a0.nic.io, b0.nic.io-
capstacker.ions-1302.awsdns-34.org, ns-780.awsdns-33.net, ns-232.awsdns-29.com, ns-1759.awsdns-27.co.uk-

✅ Authoritative Response

Server:205.251.198.223

NS records: ns-1302.awsdns-34.org, ns-780.awsdns-33.net, ns-232.awsdns-29.com, ns-1759.awsdns-27.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for capstacker.io (unsigned zone)

⏱️ Timing

Total: 558ms | Queries: -

📄 Records

TypeCountSample Data
A154.81.73.103
NS4ns-1302.awsdns-34.org, ns-1759.awsdns-27.co.uk...
MX5aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...
TXT2google-site-verification=e4bjZSI_k2dTwCZ, v=spf1 include:_spf.google.com ~all
SOA1ns-1302.awsdns-34.org awsdns-hostmaster.

Analysis

Hierarchy

capstacker.io is a parent of app.capstacker.io and api.capstacker.io.

IP Addresses

capstacker.io points to a single IP address: 54.81.73.103.

Other host names such as api.capstacker.io, app.capstacker.io and ec2-54-81-73-103.compute-1.amazonaws.com share IP numbers with capstacker.io.

Name Servers

capstacker.io is delegated to four name servers: ns-232.awsdns-29.com, ns-780.awsdns-33.net, ns-1302.awsdns-34.org and ns-1759.awsdns-27.co.uk.

At least part of the name servers for capstacker.io are shared with other domains, for instance pharmacy.api.health.amazon, mesabeilles.fr, sasksearch.org, sulwhasoo.com.hk and d3sutfdup2qunr.cloudfront.net.

These name servers are often used together with ns-602.awsdns-11.net, ns-1444.awsdns-52.org and ns-1892.awsdns-44.co.uk.

Host names with two IP numbers:

ns-232.awsdns-29.com points to: 2600:9000:5300:e800::1 and 205.251.192.232

ns-780.awsdns-33.net points to: 2600:9000:5303:c00::1 and 205.251.195.12

ns-1302.awsdns-34.org points to: 2600:9000:5305:1600::1 and 205.251.197.22

ns-1759.awsdns-27.co.uk points to: 2600:9000:5306:df00::1 and 205.251.198.223

Mail Servers

capstacker.io is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

capstacker.io shares at least some mail servers with other domains, for example ns500759.ns500758.ns500759.ns500759.ns500698.ns500698.ns500735.ns500736.ns500708.ns500576.ns500708.ns500686.ns500652.ns500652.trackreceptor.com, ns500671.ns500671.ns500754.ns500731.ns500704.ns500742.ns500742.ns500688.ns500705.ns500704.ns500705.ns500678.ns500649.tenderladiesbz.com, ns500731.ns500671.ns500742.ns500742.ns500704.ns500688.ns500678.ns500649.ns500291.ns500666.ns500653.ns500153.tenderladiesbz.com, ns500693.ns500734.ns500734.ns500734.ns500699.ns500734.ns500699.ns500693.ns500632.ns500612.ns500588.ns500612.ns500588.ns500578.ns500110.dtrkdll.com and ns500693.ns500765.ns500734.ns500693.ns500693.ns500699.ns500699.ns500699.ns500699.ns500693.ns500693.ns500683.ns500632.ns500588.ns500588.dtrkdll.com.

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

Host names with two IP numbers: aspmx.l.google.com points to 2607:f8b0:4004:c19::1b and 172.253.62.27; alt1.aspmx.l.google.com points to 2607:f8b0:4003:c30::1b and 74.125.27.26; alt2.aspmx.l.google.com points to 2607:f8b0:4001:c70::1a and 192.178.209.26; alt3.aspmx.l.google.com points to 2607:f8b0:4024:c0d::1b and 192.178.152.26; alt4.aspmx.l.google.com points to 2607:f8b0:4023:403::1a and 142.250.96.27.