alter.pt - robtex.com
alter.pt
| DNSSEC | ⚠️ Not signed | ||||||
| NS | srv-dn(0x736578)t01 ⭐ | ||||||
| NS | dns1.alter.es ⚠️ Not in zone NS records | ||||||
| A | 90.160.8.236🇪🇸 UNI2-AS90.160.0.0/12 Uni2 customers | ||||||
| NS | ns1.es.colt.net ⚠️ Not in zone NS records | ||||||
| A | 212.74.77.39🇬🇧 COLT212.74.77.0/24 Internal 4 | ||||||
| PTR | ns1.es.colt.net | ||||||
| SOA | srv-dn(0x736578)t01hostmaster@alter.es 2022-07-12 #12 | ||||||
pt
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | curiosity.dns.pt ⭐ | ||||||
| NS | a.dns.pt | ||||||
| NS | b.dns.pt | ||||||
| NS | c.dns.pt | ||||||
| NS | d.dns.pt | ||||||
| NS | e.dns.pt | ||||||
| NS | g.dns.pt | ||||||
| NS | h.dns.pt | ||||||
| NS | ns.dns.br ⚠️ Not in parent delegation | ||||||
| NS | ns2.nic.fr ⚠️ Not in parent delegation | ||||||
| SOA | curiosity.dns.ptrequest@dns.pt 2026-07-18 #32 | ||||||
Same first word
Similar names
DNS History
8 records (3 active, 5 former)
●NSdns1.alter.es2015-08-21 → 2026-07-18 · 7 obs
○ 2015-12-04 14:24:10
● 2016-03-17 00:17:46
○ 2016-07-22 17:42:18
○ 2017-04-02 18:06:52
● 2017-12-22 14:01:00
● 2026-07-18 15:58:46
○NSdns2.alter.es2017-12-22 → 2017-12-22 · 4 obs
● 2017-12-22 14:01:00
○ 2026-06-09 11:53:54
○ 2026-07-18 15:58:46
●NSns1.es.colt.net2017-04-02 → 2026-07-18 · 3 obs
● 2017-04-02 18:06:52
● 2026-07-18 15:58:46
○NSns2.novis.pt2015-08-21 → 2016-07-22 · 4 obs
● 2016-07-22 17:42:18
○ 2017-04-02 18:06:52
○ 2026-07-18 15:58:46
○NSsrv-dns2015-08-21 → 2017-04-02 · 7 obs
● 2015-12-04 14:24:10
○ 2016-03-17 00:17:46
● 2016-07-22 17:42:18
● 2017-04-02 18:06:52
○ 2017-12-22 14:01:00
○ 2026-07-18 15:58:46
●NSsrv-dn(0x736578)t012026-07-18 → 2026-07-18 · 3 obs
● 2026-07-18 15:58:44
● 2026-07-18 15:58:46
○A213.27.138.822017-04-02 → 2017-04-02 · 3 obs
○ 2017-12-22 14:01:00
○ 2026-07-18 15:58:46
○A90.160.8.2362017-12-22 → 2017-12-22 · 4 obs
● 2017-12-22 14:01:00
○ 2026-06-09 11:53:54
○ 2026-07-18 15:58:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| pt | a.dns.pt, b.dns.pt, c.dns.pt, d.dns.pt... | 18 records |
| alter.pt | ns1.es.colt.net, dns1.alter.es | - |
✅ Authoritative Response
Server:90.160.8.236
NS records: ns1.es.colt.net, dns1.alter.es
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for alter.pt (unsigned zone)
⏱️ Timing
Total: 4782ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| SOA | 1 | srv-dn(0x736578)t01 hostmaster.alter.es |
📌 Glue Records Collected
Total: 18
In-bailiwick: 14 (a.dns.pt, b.dns.pt, c.dns.pt...)
Out-of-bailiwick: 4 (ns.dns.br, ns2.nic.fr, ns.dns.br...)
Analysis
Name Servers
alter.pt is delegated to three name servers: srv-dn(0x736578)t01, dns1.alter.es and ns1.es.colt.net.
alter.pt shares at least some of its name servers with other domains, including vcloud.colt.net, emminens-markettest.com, guiaong.es and two others.
These name servers are frequently seen alongside ns0.es.colt.net, dns2.alter.es, dn(0x736578)t01.alter.es and 7 other name servers.
dns1.alter.es and ns1.es.colt.net each resolve to one IP number: dns1.alter.es points to 90.160.8.236 and ns1.es.colt.net points to 212.74.77.39.