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ICZ a.s. logo

ICZ a.s.

🇨🇿 Czech Republic

The ASN (Autonomous System Number) is a unique number assigned to an autonomous system, used to identify the network. ASN

AS43757

The RIR (Regional Internet Registry) is the organization responsible for managing ASN allocation in a specific region. RIR

RIPE

The type of ASN. Can be business, isp, hosting, government, or education. Type

business

Website

i.cz

Related ASNs have the same name or website. Related

AS48451

IPv4 CIDRs

2

IPv4 addresses

2304

IPv6 CIDRs

1

IPv6 addresses

65536

Upstreams are networks that provide transit to this ASN. Upstreams (3)

AS8778 Slovanet a.s. logo Slovanet a.s.
AS5610 O2 Czech Republic, a.s. logo O2 Czech Republic, a.s.
AS6855 Slovak Telekom, a.s. logo Slovak Telekom, a.s.

Peers are networks that exchange traffic with this ASN. Peers (3)

AS5610 O2 Czech Republic, a.s. logo O2 Czech Republic, a.s.
AS6855 Slovak Telekom, a.s. logo Slovak Telekom, a.s.
AS8778 Slovanet a.s. logo Slovanet a.s.

IPv4 CIDRs (2)

78.31.24.0/21
192.108.126.0/24

IPv6 CIDRs (1)

2001:67c:1578::/48

Location

City

Prague

Country

🇨🇿 Czech Republic

Coordinates

50.08804, 14.42076

Timezone

Europe/Prague

We transparently share the different sources used to determine a likely location for this IP address. Source

whois

Abuse

Email

abuse@i.cz

Phone

+420 222271111

Query via the API View API documentation 

curl iplib.re/AS43757

JSON response

{
  "network": {
    "rir": "RIPE",
    "asn": 43757,
    "name": "ICZ a.s.",
    "type": "business",
    "website": "i.cz",
    "related": [
      48451
    ]
  },
  "connectivity": {
    "upstreams": [
      8778,
      5610,
      6855
    ],
    "peers": [
      5610,
      6855,
      8778
    ]
  },
  "location": {
    "latitude": 50.08804,
    "longitude": 14.42076,
    "country": "CZ",
    "city": "Prague",
    "source": "whois",
    "timezone": "Europe/Prague"
  },
  "abuse": {
    "email": "abuse@i.cz",
    "phone": "+420 222271111"
  },
  "ipv4": {
    "ranges": [
      "78.31.24.0/21",
      "192.108.126.0/24"
    ],
    "cidrs": 2,
    "ips": 2304
  },
  "ipv6": {
    "ranges": [
      "2001:67c:1578::/48"
    ],
    "cidrs": 1,
    "ips": 65536
  }
}