certifyos.com - robtex.com
certifyos.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 76.76.21.21🇺🇸 Amazon76.76.21.0/24 EC2 Prefix | ||||||
| PTR | ip-76-76-21-21.defastlink.net | ||||||
| NS | ns-540.awsdns-03.net ⭐ | ||||||
| A | 2600:9000:5302:1c00::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-540.awsdns-03.net | ||||||
| A | 205.251.194.28🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-540.awsdns-03.net | ||||||
| NS | ns-1115.awsdns-11.org | ||||||
| A | 2600:9000:5304:5b00::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1115.awsdns-11.org | ||||||
| A | 205.251.196.91🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1115.awsdns-11.org | ||||||
| NS | ns-1839.awsdns-37.co.uk | ||||||
| A | 2600:9000:5307:2f00::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront | ||||||
| PTR | ns-1839.awsdns-37.co.uk | ||||||
| A | 205.251.199.47🇺🇸 Amazon205.251.199.0/24 prefix | ||||||
| PTR | ns-1839.awsdns-37.co.uk | ||||||
| NS | ns-229.awsdns-28.com | ||||||
| A | 2600:9000:5300:e500::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront | ||||||
| PTR | ns-229.awsdns-28.com | ||||||
| A | 205.251.192.229🇺🇸 Amazon205.251.192.0/24 prefix | ||||||
| PTR | ns-229.awsdns-28.com | ||||||
| MX | aspmx.l.google.com ⭐ | ||||||
| A | 2607:f8b0:4004:c19::1b🇺🇸 Google2607:f8b0:4004::/48 | ||||||
| PTR | bk-in-f27.1e100.net | ||||||
| A | 172.253.62.27🇺🇸 Google172.253.62.0/24 | ||||||
| PTR | bc-in-f27.1e100.net | ||||||
| MX | alt1.aspmx.l.google.com(5) | ||||||
| A | 2607:f8b0:4003:c30::1b🇺🇸 Google2607:f8b0:4003::/48 | ||||||
| PTR | yutulis-in-f27.1e100.net | ||||||
| A | 74.125.27.26🇺🇸 Google74.125.27.0/24 | ||||||
| PTR | yutulis-in-f26.1e100.net | ||||||
| MX | alt2.aspmx.l.google.com(5) | ||||||
| A | 2607:f8b0:4001:c70::1a🇺🇸 Google2607:f8b0:4001::/48 | ||||||
| PTR | yucbful-in-f26.1e100.net | ||||||
| A | 192.178.209.26🇺🇸 Google192.178.209.0/24 | ||||||
| PTR | yucbful-in-f26.1e100.net | ||||||
| MX | alt3.aspmx.l.google.com(10) | ||||||
| A | 2607:f8b0:4024:c0d::1b🇺🇸 Google2607:f8b0::/32 | ||||||
| PTR | mj-in-f27.1e100.net | ||||||
| A | 192.178.152.26🇺🇸 Google192.178.152.0/24 | ||||||
| PTR | mj-in-f26.1e100.net | ||||||
| MX | alt4.aspmx.l.google.com(10) | ||||||
| A | 2607:f8b0:4023:403::1a🇺🇸 Google2607:f8b0::/32 | ||||||
| PTR | gg-in-f26.1e100.net | ||||||
| A | 142.250.96.27🇺🇸 Google142.250.96.0/24 | ||||||
| PTR | gg-in-f27.1e100.net | ||||||
| TXT | MS=2C95DB8A94DDA0E31A270C9AF001989E498C535 | ||||||
| TXT | airtable-verification=83fc00f1a4027976ebcfe05fbbcedb0a | ||||||
| TXT | apple-domain-verification=C5ARCoxb7WrHOGhL | ||||||
| TXT | atlassian-domain-verification=Cx7/Nji0gldU3NnnQMUNawj62VnE9nMUcTy9kfVfgbDWqQI... | ||||||
| TXT | atlassian-sending-domain-verification=d8c60223-4fab-4aef-b071-34c0145e1f72 | ||||||
| TXT | cursor-domain-verification-q4ffx7=6qhvE9CatPnr2Y6WDatwhEa4o | ||||||
| TXT | google-site-verification=84f823e7-f20e-4aa3-aebb-93b6fd938e33 | ||||||
| TXT | google-site-verification=AFi4l4IDNgcA2XmImxUVA59cyZ5v65u54opJ_peoc3s | ||||||
| TXT | google-site-verification=S_Ux3dbZ9eYHFfq-mjEk7ZMf4CgPg-LZyPUY78ZuSZs | ||||||
| TXT | google-site-verification=XnjLyPnVmo4Uv0VXCZbJK5i-FuyNjwXUnK_JX4qm_xE | ||||||
| TXT | google-site-verification=gXM7b_Y0E7qJx6mvtCTh9BFYs6TuhpNrJecz8gXGgK8 | ||||||
| TXT | google-site-verification=p762uv2CikTo_usgKhGoR5nYA5l6Q4mssCkEwApHIgI | ||||||
| TXT | google-site-verification=r1UJ4-srilOhLY4Gw6DqT2sokT6qUnFWIUwBba7rRsI | ||||||
| TXT | openai-domain-verification=dv-RdZwueiyuIUll1J1Q7UUkZ4z | ||||||
| TXT | pardot1005922=bac531352b7f1b52af2dc9f2a3438217c0986ab4f7243619a2af08545cc698ca | ||||||
| TXT | postman-domain-verification=1dd336e06f95914252964d67729bab70af17df451fe0329d4... | ||||||
| TXT | slack-domain-verification=0DmXbAO1Q9m18wB8QtRgSplOveUkwUQmV3sTX2JV | ||||||
| TXT | v=spf1 include:40166028.spf01.hubspotemail.net include:_spf.google.com includ... | ||||||
| TXT | whimsical=081fb2387797ee140fc48f2b5977bedd7b018444 | ||||||
| SOA | ns-540.awsdns-03.netawsdns-hostmaster@amazon.com serial=1 | ||||||
com
| 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.netnstld@verisign-grs.com serial=1771291435 | ||||||
Subdomains
ng.certifyos.com |
Same first word
certifyos.com |
Similar names
DNS History
10 records (10 active, 0 former)
●NSns-1115.awsdns-11.org2026-03-14 → 2026-03-14 · 2 obs
● 2026-03-14 10:42:34
●NSns-1839.awsdns-37.co.uk2026-03-14 → 2026-03-14 · 2 obs
● 2026-03-14 10:42:34
●NSns-229.awsdns-28.com2026-03-14 → 2026-03-14 · 2 obs
● 2026-03-14 10:42:34
●NSns-540.awsdns-03.net2026-03-14 → 2026-03-14 · 2 obs
● 2026-03-14 10:42:34
●MXalt1.aspmx.l.google.com2026-03-14 → 2026-03-14 · 2 obs
● 2026-03-14 10:42:34
●MXalt2.aspmx.l.google.com2026-03-14 → 2026-03-14 · 2 obs
● 2026-03-14 10:42:34
●MXalt3.aspmx.l.google.com2026-03-14 → 2026-03-14 · 2 obs
● 2026-03-14 10:42:34
●MXalt4.aspmx.l.google.com2026-03-14 → 2026-03-14 · 2 obs
● 2026-03-14 10:42:34
●MXaspmx.l.google.com2026-03-14 → 2026-03-14 · 2 obs
● 2026-03-14 10:42:34
●A76.76.21.212026-03-14 → 2026-03-14 · 2 obs
● 2026-03-14 10:42:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | c.gtld-servers.net, i.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net... | - |
| certifyos.com | ns-229.awsdns-28.com, ns-540.awsdns-03.net, ns-1115.awsdns-11.org, ns-1839.awsdns-37.co.uk | 1 record |
✅ Authoritative Response
Server: 205.251.199.47
NS records: ns-229.awsdns-28.com, ns-540.awsdns-03.net, ns-1115.awsdns-11.org, ns-1839.awsdns-37.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for certifyos.com (unsigned zone)
⏱️ Timing
Total: 642ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 76.76.21.21 |
| NS | 4 | ns-1115.awsdns-11.org, ns-1839.awsdns-37.co.uk... |
| MX | 5 | aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)... |
| TXT | 19 | MS=2C95DB8A94DDA0E31A270C9AF001989E498C5, airtable-verification=83fc00f1a4027976eb... |
| SOA | 1 | ns-540.awsdns-03.net awsdns-hostmaster.a |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (ns-229.awsdns-28.com)
Analysis
Hierarchy
The parent of ng.certifyos.com is certifyos.com.
IP Addresses
certifyos.com points to a single IP number: 76.76.21.21.
Other host names, for instance one-stream.io, buddyweb.fr, hopechapel.org, malaproject.com and financialsummary.com share IP numbers with certifyos.com.
Name Servers
certifyos.com is delegated to four name servers: ns-229.awsdns-28.com, ns-540.awsdns-03.net, ns-1115.awsdns-11.org and ns-1839.awsdns-37.co.uk.
certifyos.com shares name servers with other domains at least partially, for instance lhcentgw.biz, enode.com, d8orgbtlsnid2.cloudfront.net, marcate.com.mx and transporttribunal.gov.uk.
Host names with two IP numbers:
ns-229.awsdns-28.com resolves to 2600:9000:5300:e500::1 and 205.251.192.229.
ns-540.awsdns-03.net resolves to 2600:9000:5302:1c00::1 and 205.251.194.28.
ns-1115.awsdns-11.org resolves to 2600:9000:5304:5b00::1 and 205.251.196.91.
ns-1839.awsdns-37.co.uk resolves to 2600:9000:5307:2f00::1 and 205.251.199.47.
Mail Servers
certifyos.com 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.
certifyos.com shares some mail servers with other domains, including otg.bz, ns500693.ns500765.ns500693.ns500699.ns500734.ns500699.ns500588.ns500699.ns500612.ns500588.ns500612.ns500632.ns500612.ns500578.ns500110.dtrkdll.com, ns500765.ns500734.ns500699.ns500693.ns500693.ns500734.ns500734.ns500693.ns500693.ns500683.ns500683.ns500693.ns500693.ns500110.dtrkdll.com, ns500742.ns500671.ns500731.ns500742.ns500671.ns500671.ns500705.ns500704.ns500649.ns500666.ns500649.ns500153.tenderladiesbz.com and ns500754.ns500731.ns500754.ns500704.ns500705.ns500688.ns500705.ns500705.ns500688.ns500678.ns500142.lusty(0x736c7574)z.com.
these mail servers are commonly used with aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.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.