AS15450 — ALHAMBRA Tlfo: +34 917 872 300
AS15450 announces 11 IPv4 prefixes covering 7,168 addresses and 1 IPv6 prefixes.
About this network
The AS handle contains a telephone number, complete with international dialling prefix.
What it's used for
- An information technology services company. Eleven IPv4 prefixes and one IPv6 /32 announced from Spain, seven thousand addresses, across four observed BGP neighbours.
Notable
- The handle field holds the company name and then a switchboard number with a country dialling prefix and spaced groups of digits, in a field meant for an identifier.
- Seven blocks follow one netname pattern of country code, company and allocation date, the oldest from the mid-nineties and the newest a decade and a half later.
- Four blocks belong to entirely different companies: a credit reference agency under another country's code, a property valuation firm, a company under a name about worldwide services, and a data centre operator.
- The two answering addresses use three letters and the last two octets padded with zeroes, under a shortened form of the company domain.
- Eighteen addresses were queried for reverse DNS and two returned a name.
Interesting
- A phone number in a registry field is a person filling in a form the way they would fill in a business card. It is also the only contact detail here that a human could actually use.
- Four other companies' blocks announced from one number is a hosting relationship, and the registries involved are not all the same one, which means the customers came from different places.
- Zero padding the octets keeps every name the same length, so names sort as neatly as addresses do.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 77.95.152.0/21
- 84.246.169.0/24
- 91.240.173.0/24
- 109.234.64.0/22
- 109.234.68.0/23
- 109.234.70.0/24
- 194.69.248.0/22
- 195.138.209.0/24
- 195.140.156.0/22
- 199.58.191.0/24
- 209.99.50.0/24
- 2a01:7d00::/32
Upstream networks
Downstream networks
Adjacent networks
BGP / ASN / CIDR
awaiting query
enter an AS number, IP address, or organisation name above
IPv4
resolving...
IPv6
resolving...
Search Results
IPv4 Prefixes
—
IPv6 Prefixes
—
Total Prefixes
—
Unique /24s
—
⚠ SUSPICIOUS PREFIX ANNOUNCEMENTS DETECTED