ctreaderbot.appspot.com - dns.ninja

ctreaderbot.appspot.com

DNSSEC⚠️ Not signed
A2607:f8b0:4004:c09::99🇺🇸 Google2607:f8b0:4004::/48
PTRbh-in-f153.1e100.net
A172.253.122.153🇺🇸 Google172.253.122.0/24
MXgmr-smtp-in.l.google.com ⭐
A2607:f8b0:4004:c19::e🇺🇸 Google2607:f8b0:4004::/48
PTRbk-in-f14.1e100.net
A142.251.111.14🇺🇸 Google142.251.111.0/24
PTRbk-in-f14.1e100.net
MXalt1.gmr-smtp-in.l.google.com(10)
A2800:3f0:4003:c0f::e🇨🇱 Google2800:3f0:4003::/48
A108.177.123.14🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f14.1e100.net
MXalt2.gmr-smtp-in.l.google.com(20)
A2a00:1450:400b:c02::e🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f14.1e100.net
A172.253.116.14🇺🇸 Google172.253.116.0/24
PTRdj-in-f14.1e100.net
MXalt3.gmr-smtp-in.l.google.com(30)
A2a00:1450:4009:c0f::e🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f14.1e100.net
A192.178.223.14🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f14.1e100.net
MXalt4.gmr-smtp-in.l.google.com(40)
A2a00:1450:400c:c23::e🇧🇪 Google2a00:1450:400c::/48
PTRyubrupd-in-f14.1e100.net
A172.253.157.14🇺🇸 Google172.253.0.0/16
PTRyubrupd-in-f14.1e100.net

appspot.com

DNSSEC⚠️ Not signed
A2607:f8b0:4004:c1d::64🇺🇸 Google2607:f8b0:4004::/48
A2607:f8b0:4004:c1d::65🇺🇸 Google2607:f8b0:4004::/48
A2607:f8b0:4004:c1d::66🇺🇸 Google2607:f8b0:4004::/48
A2607:f8b0:4004:c1d::71🇺🇸 Google2607:f8b0:4004::/48
A142.251.167.100🇺🇸 Google142.251.167.0/24
A142.251.167.101🇺🇸 Google142.251.167.0/24
A142.251.167.102🇺🇸 Google142.251.167.0/24
A142.251.167.113🇺🇸 Google142.251.167.0/24
A142.251.167.138🇺🇸 Google142.251.167.0/24
A142.251.167.139🇺🇸 Google142.251.167.0/24
NSns1.google.com ⭐
NSns2.google.com
NSns3.google.com
NSns4.google.com
TXTIPROTA_D29304-(0x585858)
TXTv=spf1 -all
SOAns1.google.comdns-admin@google.com serial=946928500
rank #625 globally
rank #370 in the tld

appspot.com

appspot.com is the default domain Google App Engine assigns to hosted applications. It is operated by Google and serves as the base for app-specific subdomains.

Key facts

  • Owner / operator: Google
  • TLD:.com— gTLD
  • Primary purpose: hosting platform for Google App Engine applications (PaaS)
  • Status: active

History

YearEvent
2008Launch of Google App Engine (beta) with default*.appspot.comsubdomains
2014Introduction of Managed VMs (precursor to Flexible environment)
2015General Availability of App Engine Flexible Environment
2020Automatic SSL for custom domains on App Engine apps

Notable subdomains or services

  • *.appspot.com– Google App Engine applications
Semrush Rank:#7,468,264 Keywords:1 Traffic:12/mo
WOT: SAFE (82/100)
📈 Tranco rank: #790
appspot.com - Tranco Rank (30d: ↓-14)770775780785790793Jun 7Jun 16Jun 25Jul 4Jul 12Rank#776#790

Google App Engine Hosting Domain

appspot.com is the default hosting domain for applications deployed on Google App Engine, Google Cloud's fully managed serverless platform for developing and hosting web applications at scale. When developers deploy an application to App Engine, it is automatically assigned a subdomain under appspot.com (e.g.,myproject.appspot.com).

Key Features of App Engine

  • Serverless Architecture – No server management required; Google handles infrastructure
  • Automatic Scaling – Capacity adjusts dynamically based on traffic demand
  • Multi-Language Support – Python, Go, Java, Node.js, PHP, Ruby, and .NET
  • Two Environments – Standard (pre-configured runtimes) and Flexible (custom containers)

DNS Infrastructure

The domain is hosted entirely on Google's infrastructure:

Record TypeDetails
Nameserversns1-4.google.com (AS15169)
IPv4Multiple IPs in 192.178.155.x range
IPv62607:f8b0:4004:c23::/64
SPFv=spf1 -all(no mail sent from this domain)
DNSSECNot signed

App Engine was one of the first Platform-as-a-Service (PaaS) offerings when Google launched it in 2008, predating competitors like Heroku and AWS Elastic Beanstalk. Today it remains a core component of Google Cloud Platform, serving millions of applications worldwide.

Same first word

ctreaderbot.appspot.com

Similar names

debtortrace.com

DNS History

65 records (7 active, 58 former)

20192020202120222023202420252026MXalt1.gmr-smtp-in.l.google.comalt2.gmr-smtp-in.l.google.comalt3.gmr-smtp-in.l.google.comalt4.gmr-smtp-in.l.google.comgmr-smtp-in.l.google.comA172.253.122.1532607:f8b0:4004:c09::99142.250.117.153142.250.129.153142.250.189.180142.250.190.244142.250.68.52142.251.167.153142.251.210.52142.251.211.212142.251.41.20142.251.45.212172.217.0.52172.217.26.52172.217.27.84172.217.30.84172.217.6.84172.217.7.244172.253.115.153172.253.139.153172.253.62.153173.194.205.153216.58.192.20216.58.195.84216.58.199.52216.58.200.116216.58.201.20216.58.202.1482404:6800:4003:c03::992404:6800:4004:807::20142404:6800:4004:80d::20142404:6800:4006:803::20142404:6800:4006:808::20142607:f8b0:4004:802::20142607:f8b0:4004:c06::992607:f8b0:4004:c07::992607:f8b0:4004:c1d::992607:f8b0:4004:c21::992607:f8b0:4004:c27::992607:f8b0:4005:801::20142607:f8b0:4005:802::20142607:f8b0:4005:807::20142607:f8b0:4005:80a::20142607:f8b0:4005:80c::20142607:f8b0:4006:800::20142607:f8b0:4006:810::20142607:f8b0:4006:811::20142607:f8b0:4006:823::20142607:f8b0:4007:806::20142607:f8b0:4007:810::20142607:f8b0:400d:c00::992800:3f0:4001:80a::20142800:3f0:4001:815::20142a00:1450:4009:805::20142a00:1450:4009:c04::992a00:1450:4009:c08::992a00:1450:400b:c01::9964.233.180.15374.125.193.15374.125.24.153
●MXalt1.gmr-smtp-in.l.google.com2018-08-25 → 2026-07-14 · 2 obs
● 2018-08-25 12:43:48
● 2026-07-14 18:07:06
●MXalt2.gmr-smtp-in.l.google.com2018-08-25 → 2026-07-14 · 2 obs
● 2018-08-25 12:43:48
● 2026-07-14 18:07:06
●MXalt3.gmr-smtp-in.l.google.com2018-08-25 → 2026-07-14 · 2 obs
● 2018-08-25 12:43:48
● 2026-07-14 18:07:06
●MXalt4.gmr-smtp-in.l.google.com2018-08-25 → 2026-07-14 · 2 obs
● 2018-08-25 12:43:48
● 2026-07-14 18:07:06
●MXgmr-smtp-in.l.google.com2018-08-25 → 2026-07-14 · 2 obs
● 2018-08-25 12:43:48
● 2026-07-14 18:07:06
○A142.250.117.1532026-03-25 → 2026-03-27 · 5 obs
○ 2026-03-24 19:40:28
● 2026-03-25 05:05:44
● 2026-03-27 10:43:22
○ 2026-04-09 03:17:48
○ 2026-07-14 18:07:06
○A142.250.129.1532026-03-23 → 2026-05-07 · 7 obs
○ 2026-03-15 12:21:22
● 2026-03-23 07:39:14
○ 2026-03-24 19:40:28
○ 2026-05-06 10:20:24
● 2026-05-07 16:09:22
○ 2026-06-21 21:52:28
○ 2026-07-14 18:07:06
○A142.250.189.1802021-09-23 → 2021-09-23 · 4 obs
○ 2018-11-09 22:42:06
● 2021-09-23 17:18:08
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A142.250.190.2442026-04-24 → 2026-04-24 · 4 obs
○ 2026-04-12 15:57:30
● 2026-04-24 19:19:54
○ 2026-04-29 11:17:36
○ 2026-07-14 18:07:06
○A142.250.68.522026-02-15 → 2026-02-15 · 4 obs
○ 2021-09-23 17:18:08
● 2026-02-15 15:03:10
○ 2026-03-08 05:01:58
○ 2026-07-14 18:07:06
○A142.251.167.1532026-07-10 → 2026-07-10 · 3 obs
○ 2026-07-05 10:00:38
● 2026-07-10 22:40:54
○ 2026-07-14 18:07:06
○A142.251.210.522026-02-15 → 2026-07-14 · 2 obs
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A142.251.211.2122026-04-09 → 2026-04-12 · 5 obs
○ 2026-03-27 10:43:22
● 2026-04-09 03:17:48
● 2026-04-12 15:57:30
○ 2026-04-24 19:19:54
○ 2026-07-14 18:07:06
○A142.251.41.202026-04-29 → 2026-04-29 · 4 obs
○ 2026-04-24 19:19:54
● 2026-04-29 11:17:36
○ 2026-05-06 10:20:24
○ 2026-07-14 18:07:06
○A142.251.45.2122026-03-15 → 2026-03-24 · 6 obs
○ 2026-03-08 18:45:16
● 2026-03-15 12:21:22
○ 2026-03-23 07:39:14
● 2026-03-24 19:40:28
○ 2026-03-25 05:05:44
○ 2026-07-14 18:07:06
○A172.217.0.522018-08-25 → 2018-11-09 · 4 obs
● 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A172.217.26.522018-11-09 → 2018-11-09 · 4 obs
○ 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A172.217.27.842018-08-25 → 2018-08-25 · 3 obs
● 2018-08-25 12:43:48
○ 2018-11-09 22:42:06
○ 2026-07-14 18:07:06
○A172.217.30.842018-08-25 → 2018-08-25 · 3 obs
● 2018-08-25 12:43:48
○ 2018-11-09 22:42:06
○ 2026-07-14 18:07:06
○A172.217.6.842018-11-09 → 2018-11-09 · 4 obs
○ 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2021-09-23 17:18:08
○ 2026-07-14 18:07:06
○A172.217.7.2442018-08-25 → 2018-08-25 · 3 obs
● 2018-08-25 12:43:48
○ 2018-11-09 22:42:06
○ 2026-07-14 18:07:06
○A172.253.115.1532026-06-21 → 2026-06-21 · 4 obs
○ 2026-05-07 16:09:22
● 2026-06-21 21:52:28
○ 2026-07-05 10:00:38
○ 2026-07-14 18:07:06
●A172.253.122.1532026-07-05 → 2026-07-14 · 4 obs
○ 2026-06-21 21:52:28
● 2026-07-05 10:00:38
○ 2026-07-10 22:40:54
● 2026-07-14 18:07:06
○A172.253.139.1532026-03-08 → 2026-03-08 · 4 obs
○ 2026-02-15 15:03:10
● 2026-03-08 05:01:58
○ 2026-03-08 18:45:16
○ 2026-07-14 18:07:06
○A172.253.62.1532026-05-06 → 2026-05-06 · 4 obs
○ 2026-04-29 11:17:36
● 2026-05-06 10:20:24
○ 2026-05-07 16:09:22
○ 2026-07-14 18:07:06
○A173.194.205.1532018-11-09 → 2018-11-09 · 4 obs
○ 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A216.58.192.202018-08-25 → 2018-08-25 · 3 obs
● 2018-08-25 12:43:48
○ 2018-11-09 22:42:06
○ 2026-07-14 18:07:06
○A216.58.195.842018-11-09 → 2018-11-09 · 4 obs
○ 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A216.58.199.522018-11-09 → 2018-11-09 · 4 obs
○ 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A216.58.200.1162018-08-25 → 2018-08-25 · 3 obs
● 2018-08-25 12:43:48
○ 2018-11-09 22:42:06
○ 2026-07-14 18:07:06
○A216.58.201.202018-08-25 → 2018-08-25 · 3 obs
● 2018-08-25 12:43:48
○ 2018-11-09 22:42:06
○ 2026-07-14 18:07:06
○A216.58.202.1482018-11-09 → 2018-11-09 · 4 obs
○ 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A2404:6800:4003:c03::992018-08-25 → 2018-11-09 · 4 obs
● 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A2404:6800:4004:807::20142018-08-25 → 2018-08-25 · 3 obs
● 2018-08-25 12:43:48
○ 2018-11-09 22:42:06
○ 2026-07-14 18:07:06
○A2404:6800:4004:80d::20142018-11-09 → 2018-11-09 · 4 obs
○ 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A2404:6800:4006:803::20142018-11-09 → 2018-11-09 · 4 obs
○ 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A2404:6800:4006:808::20142018-08-25 → 2018-08-25 · 3 obs
● 2018-08-25 12:43:48
○ 2018-11-09 22:42:06
○ 2026-07-14 18:07:06
○A2607:f8b0:4004:802::20142018-08-25 → 2018-08-25 · 3 obs
● 2018-08-25 12:43:48
○ 2018-11-09 22:42:06
○ 2026-07-14 18:07:06
○A2607:f8b0:4004:c06::992026-06-21 → 2026-06-21 · 4 obs
○ 2026-05-07 16:09:22
● 2026-06-21 21:52:28
○ 2026-07-05 10:00:38
○ 2026-07-14 18:07:06
○A2607:f8b0:4004:c07::992026-05-06 → 2026-05-06 · 4 obs
○ 2026-04-29 11:17:36
● 2026-05-06 10:20:24
○ 2026-05-07 16:09:22
○ 2026-07-14 18:07:06
●A2607:f8b0:4004:c09::992026-07-05 → 2026-07-14 · 4 obs
○ 2026-06-21 21:52:28
● 2026-07-05 10:00:38
○ 2026-07-10 22:40:54
● 2026-07-14 18:07:06
○A2607:f8b0:4004:c1d::992026-07-10 → 2026-07-10 · 3 obs
○ 2026-07-05 10:00:38
● 2026-07-10 22:40:54
○ 2026-07-14 18:07:06
○A2607:f8b0:4004:c21::992026-03-08 → 2026-03-08 · 4 obs
○ 2026-03-08 05:01:58
● 2026-03-08 18:45:16
○ 2026-03-15 12:21:22
○ 2026-07-14 18:07:06
○A2607:f8b0:4004:c27::992026-03-08 → 2026-03-08 · 4 obs
○ 2026-02-15 15:03:10
● 2026-03-08 05:01:58
○ 2026-03-08 18:45:16
○ 2026-07-14 18:07:06
○A2607:f8b0:4005:801::20142018-08-25 → 2018-08-25 · 3 obs
● 2018-08-25 12:43:48
○ 2018-11-09 22:42:06
○ 2026-07-14 18:07:06
○A2607:f8b0:4005:802::20142018-08-25 → 2018-11-09 · 4 obs
● 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A2607:f8b0:4005:807::20142018-11-09 → 2018-11-09 · 4 obs
○ 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A2607:f8b0:4005:80a::20142018-11-09 → 2018-11-09 · 4 obs
○ 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2021-09-23 17:18:08
○ 2026-07-14 18:07:06
○A2607:f8b0:4005:80c::20142021-09-23 → 2021-09-23 · 4 obs
○ 2018-11-09 22:42:06
● 2021-09-23 17:18:08
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A2607:f8b0:4006:800::20142026-04-24 → 2026-04-24 · 4 obs
○ 2026-04-12 15:57:30
● 2026-04-24 19:19:54
○ 2026-04-29 11:17:36
○ 2026-07-14 18:07:06
○A2607:f8b0:4006:810::20142026-03-15 → 2026-03-24 · 6 obs
○ 2026-03-08 18:45:16
● 2026-03-15 12:21:22
○ 2026-03-23 07:39:14
● 2026-03-24 19:40:28
○ 2026-03-25 05:05:44
○ 2026-07-14 18:07:06
○A2607:f8b0:4006:811::20142026-02-15 → 2026-07-14 · 2 obs
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A2607:f8b0:4006:823::20142026-04-09 → 2026-04-12 · 5 obs
○ 2026-03-27 10:43:22
● 2026-04-09 03:17:48
● 2026-04-12 15:57:30
○ 2026-04-24 19:19:54
○ 2026-07-14 18:07:06
○A2607:f8b0:4007:806::20142026-04-29 → 2026-04-29 · 4 obs
○ 2026-04-24 19:19:54
● 2026-04-29 11:17:36
○ 2026-05-06 10:20:24
○ 2026-07-14 18:07:06
○A2607:f8b0:4007:810::20142026-02-15 → 2026-02-15 · 4 obs
○ 2021-09-23 17:18:08
● 2026-02-15 15:03:10
○ 2026-03-08 05:01:58
○ 2026-07-14 18:07:06
○A2607:f8b0:400d:c00::992018-11-09 → 2018-11-09 · 4 obs
○ 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A2800:3f0:4001:80a::20142018-08-25 → 2018-08-25 · 3 obs
● 2018-08-25 12:43:48
○ 2018-11-09 22:42:06
○ 2026-07-14 18:07:06
○A2800:3f0:4001:815::20142018-11-09 → 2018-11-09 · 4 obs
○ 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A2a00:1450:4009:805::20142018-08-25 → 2018-08-25 · 3 obs
● 2018-08-25 12:43:48
○ 2018-11-09 22:42:06
○ 2026-07-14 18:07:06
○A2a00:1450:4009:c04::992026-03-25 → 2026-03-27 · 5 obs
○ 2026-03-24 19:40:28
● 2026-03-25 05:05:44
● 2026-03-27 10:43:22
○ 2026-04-09 03:17:48
○ 2026-07-14 18:07:06
○A2a00:1450:4009:c08::992026-03-23 → 2026-05-07 · 7 obs
○ 2026-03-15 12:21:22
● 2026-03-23 07:39:14
○ 2026-03-24 19:40:28
○ 2026-05-06 10:20:24
● 2026-05-07 16:09:22
○ 2026-06-21 21:52:28
○ 2026-07-14 18:07:06
○A2a00:1450:400b:c01::992018-08-25 → 2018-11-09 · 4 obs
● 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A64.233.180.1532026-03-08 → 2026-03-08 · 4 obs
○ 2026-03-08 05:01:58
● 2026-03-08 18:45:16
○ 2026-03-15 12:21:22
○ 2026-07-14 18:07:06
○A74.125.193.1532018-08-25 → 2018-11-09 · 4 obs
● 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06
○A74.125.24.1532018-08-25 → 2018-11-09 · 4 obs
● 2018-08-25 12:43:48
● 2018-11-09 22:42:06
○ 2026-02-15 15:03:10
○ 2026-07-14 18:07:06

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comb.gtld-servers.net, d.gtld-servers.net, c.gtld-servers.net, l.gtld-servers.net...-
appspot.comns2.google.com, ns1.google.com, ns3.google.com, ns4.google.com8 records

✅ Authoritative Response

Server:216.239.34.10

NS records: ns2.google.com, ns1.google.com, ns3.google.com, ns4.google.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for appspot.com (unsigned zone)

⏱️ Timing

Total: 465ms | Queries: -

📄 Records

TypeCountSample Data
A1172.253.122.153
AAAA12607:f8b0:4004:c09::99
MX5alt4.gmr-smtp-in.l.google.com (pri: 40), alt3.gmr-smtp-in.l.google.com (pri: 30)...

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns2.google.com, ns2.google.com, ns1.google.com...)

Analysis

IP Addresses

ctreaderbot.appspot.com resolves to the IP addresses 172.253.122.153 and 2607:f8b0:4004:c09::99

ragfbfgwkmexevlm-dot-millinium.ey.r.appspot.com, 20190621t124558-dot-taalblobs-production.vfgy456sdz.appspot.com, c5dh9k-dot-kzal-tv.appspot.com plus two other host names have IP numbers in common with ctreaderbot.appspot.com.

Mail Servers

ctreaderbot.appspot.com is handled by five mail servers: gmr-smtp-in.l.google.com, alt1.gmr-smtp-in.l.google.com, alt2.gmr-smtp-in.l.google.com and two others.

At least some of the mail servers used by ctreaderbot.appspot.com are shared with other domains: flwbvacvcqzcggwz-dot-millinium.ey.r.appspot.com, best.rates.1hrpdl.appspot.com, lwwmffokktidwbkr-dot-millinium.ey.r.appspot.com and two others among them.

The mail servers alt3.gmr-smtp-in.l.google.com and alt4.gmr-smtp-in.l.google.com regularly co-occur with these mail servers.

Host names pointing to two IP addresses:

gmr-smtp-in.l.google.com resolves to 142.251.111.14 and 2607:f8b0:4004:c19::e.

alt1.gmr-smtp-in.l.google.com resolves to 108.177.123.14 and 2800:3f0:4003:c0f::e.

alt2.gmr-smtp-in.l.google.com resolves to 172.253.116.14 and 2a00:1450:400b:c02::e.

alt3.gmr-smtp-in.l.google.com resolves to 192.178.223.14 and 2a00:1450:4009:c0f::e.

alt4.gmr-smtp-in.l.google.com resolves to 172.253.157.14 and 2a00:1450:400c:c23::e.