screwdriver.cd - dns.ninja

screwdriver.cd

DNSSEC⚠️ Not signed
A185.199.108.153🇺🇸 Fastly185.199.108.0/24 GitHub - 185.199.108.0/24
PTRcdn-185-199-108-153.github.com
A185.199.109.153🇺🇸 Fastly185.199.109.0/24 GitHub - 185.199.109.0/24
NShidden-master.yahoo.com
A68.180.131.16🇺🇸 Yahoo68.180.131.0/24 ! Anycast-2 Netblock 1
PTRns1.yahoo.com
NSns1.yahoo.com
A2001:4998:1b0::7961:686f:6f21🇺🇸 Yahoo2001:4998:1b0::/48 Anycast
PTRns1.yahoo.com
A68.180.131.16🇺🇸 Yahoo68.180.131.0/24 ! Anycast-2 Netblock 1
PTRns1.yahoo.com
NSns2.yahoo.com
A2001:4998:1c0::7961:686f:6f21🇺🇸 Yahoo2001:4998:1c0::/48 Anycast
PTRns2.yahoo.com
A68.142.255.16🇺🇸 Yahoo68.142.255.0/24 ! Anycast-1 Netblock 1
PTRns2.yahoo.com
NSns3.yahoo.com
A2406:8600:f03f:1f8::1003🇮🇳 Yahoo2406:8600:f03f::/48 India Private Limited 03-106, 3rd Floor, WeWork Oberoi Commerz II 1 Mohan Gokhale Rd, Colony No 2 Aarey Colony
PTRns3.yahoo.com
A27.123.42.42🇭🇰 Yahoo27.123.42.0/24 Inc. 770 Broadway
PTRns3.yahoo.com
NSns4.yahoo.com
A98.138.11.157🇺🇸 Yahoo98.138.0.0/16 block
PTRns4.yahoo.com
NSns5.yahoo.com
A2406:2000:1d0::7961:686f:6f21🇹🇼 Yahoo2406:2000:1d0::/48 APAC Anycast
PTRns5.yahoo.com
A202.165.97.53🇺🇸 Yahoo202.165.97.0/24 APAC Anycast
PTRns5.yahoo.com
TXTv=spf1 -all
SOAhidden-master.yahoo.comhostmaster@yahoo-inc.com 2023-06-27 #1

cd

DNSSEC⚠️ Not signed
NSpch.nic.cd
NSgransy-anycast1.nic.cd
NSgransy-anycast2.nic.cd
TXTGeneration Time: 1784907148
SOApch.nic.cdnoc@nic.cd 2026-07-24 #14

Subdomains

Same first word

Similar names

DNS History

12 records (8 active, 4 former)

201820192020202120222023202420252026NShidden-master.yahoo.comns1.yahoo.comns2.yahoo.comns3.yahoo.comns4.yahoo.comns5.yahoo.comns6.yahoo.comMXA185.199.108.153185.199.109.153192.30.252.153192.30.252.154
NShidden-master.yahoo.com2017-01-20 → 2026-07-24 · 2 obs
● 2017-01-20 05:23:30
● 2026-07-24 15:51:28
NSns1.yahoo.com2017-01-20 → 2026-07-24 · 2 obs
● 2017-01-20 05:23:30
● 2026-07-24 15:51:28
NSns2.yahoo.com2017-01-20 → 2026-07-24 · 2 obs
● 2017-01-20 05:23:30
● 2026-07-24 15:51:28
NSns3.yahoo.com2017-01-20 → 2026-07-24 · 2 obs
● 2017-01-20 05:23:30
● 2026-07-24 15:51:28
NSns4.yahoo.com2017-01-20 → 2026-07-24 · 2 obs
● 2017-01-20 05:23:30
● 2026-07-24 15:51:28
NSns5.yahoo.com2017-01-20 → 2026-07-24 · 2 obs
● 2017-01-20 05:23:30
● 2026-07-24 15:51:28
NSns6.yahoo.com2017-01-20 → 2017-01-20 · 3 obs
● 2017-01-20 05:23:30
○ 2026-03-04 09:58:06
○ 2026-07-24 15:51:28
MX(root)2017-01-20 → 2017-01-20 · 3 obs
● 2017-01-20 05:23:30
○ 2026-03-04 09:58:06
○ 2026-07-24 15:51:28
A185.199.108.1532026-03-04 → 2026-07-24 · 3 obs
○ 2017-01-20 05:23:30
● 2026-03-04 09:58:06
● 2026-07-24 15:51:28
A185.199.109.1532026-03-04 → 2026-07-24 · 3 obs
○ 2017-01-20 05:23:30
● 2026-03-04 09:58:06
● 2026-07-24 15:51:28
A192.30.252.1532017-01-20 → 2017-01-20 · 3 obs
● 2017-01-20 05:23:30
○ 2026-03-04 09:58:06
○ 2026-07-24 15:51:28
A192.30.252.1542017-01-20 → 2017-01-20 · 3 obs
● 2017-01-20 05:23:30
○ 2026-03-04 09:58:06
○ 2026-07-24 15:51:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cdgransy-anycast1.nic.cd, pch.nic.cd, gransy-anycast2.nic.cd3 records
screwdriver.cdns1.yahoo.com, ns2.yahoo.com, ns3.yahoo.com, ns4.yahoo.com...-

✅ Authoritative Response

Server:202.165.97.53

NS records: ns1.yahoo.com, ns2.yahoo.com, ns3.yahoo.com, ns4.yahoo.com, ns5.yahoo.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cd (unsigned zone)

⏱️ Timing

Total: 1203ms | Queries: -

📄 Records

TypeCountSample Data
A2185.199.108.153, 185.199.109.153
NS5ns3.yahoo.com, ns5.yahoo.com...
MX1. (pri: 0)
TXT1v=spf1 -all
SOA1hidden-master.yahoo.com hostmaster.yahoo

📌 Glue Records Collected

Total: 3

In-bailiwick: 3 (gransy-anycast1.nic.cd, pch.nic.cd, gransy-anycast2.nic.cd)

Analysis

Hierarchy

cd.screwdriver.cd is delegated beneath screwdriver.cd.

IP Addresses

screwdriver.cd has two IP addresses: 185.199.108.153 and 185.199.109.153

Additional host names — sentryco.github.io, jesswhiteus.github.io, mateuszbuda.github.io and two others — share IP numbers with screwdriver.cd.

Name Servers

screwdriver.cd is served by 6 authoritative name servers — among them hidden-master.yahoo.com, ns1.yahoo.com, ns2.yahoo.com and 3 others.

There is at least partial name server overlap between screwdriver.cd and other domains — 79.177.183.in-addr.arpa, ryahoo.com, nqs.yahoo.com and two more among them.

These name servers regularly appear alongside ns4.yahoo.com, ns5.yahoo.com, ns3.yahoo.com and 4 other name servers in NS record sets.

Host names with two IP numbers:

ns1.yahoo.com resolves to two addresses: 68.180.131.16 and 2001:4998:1b0::7961:686f:6f21.

ns2.yahoo.com resolves to two addresses: 68.142.255.16 and 2001:4998:1c0::7961:686f:6f21.

ns3.yahoo.com resolves to two addresses: 27.123.42.42 and 2406:8600:f03f:1f8::1003.

ns5.yahoo.com resolves to two addresses: 202.165.97.53 and 2406:2000:1d0::7961:686f:6f21.

Host names pointing to a single IP address:

The hostname hidden-master.yahoo.com resolves to 68.180.131.16.

The hostname ns4.yahoo.com resolves to 98.138.11.157.

ns1.yahoo.com along with hidden-master.yahoo.com each resolve to 68.180.131.16 IP addresses.