Organization
"GREFNET" Miroslaw Grefkowicz
GREFNET-AS
Registered
Dec 20, 2010
15 years ago
IPv4 Prefixes
4
1,024 addresses
IPv6 Prefixes
0
BGP Neighbours
7
5 upstream/peer · 0 downstream · 2 collector-only
Registration
AS Number AS197479 AS Name GREFNET-AS Organization "GREFNET" Miroslaw Grefkowicz Organization ID ORG-GA244-RIPE Address Humin 1A, 99-417 Bolimow, Poland Country Poland (PL) Registry RIPE NCC Allocated Dec 20, 2010 Record Created Dec 20, 2010 Last Updated Jul 11, 2021 Status
active
WHOIS Server whois.ripe.net AS Description GREFNET-AS - _GREFNET_ Miroslaw Grefkowicz, PL Abuse Email [email protected] Abuse Phone +48 695330279 IPv4 Prefixes
4 prefixes · 1,024 addresses · 1 top-level Routing data as of 2026-10-04 16:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 91.222.144.0/22 | 91.222.144.0 – 91.222.147.255 | 1,024 |
| 91.222.144.0/24 | 91.222.144.0 – 91.222.144.255 | 256 |
| 91.222.145.0/24 | 91.222.145.0 – 91.222.145.255 | 256 |
| 91.222.147.0/24 | 91.222.147.0 – 91.222.147.255 | 256 |
IPv6 Prefixes
This AS does not currently announce any IPv6 prefixes.
BGP Neighbours
7 unique neighbours · 5 upstream/peer · 0 downstream · 2 collector-only. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries. Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers. Networks seen to the left of this AS only when they peer directly with a RIPE RIS route collector, so the adjacency may be an artefact of that peering; many of them also appear on the downstream side. Upstream & peer side (5)
Collector-only (2)
Raw RDAP Response
{
"handle": "AS197479",
"startAutnum": 197479,
"endAutnum": 197479,
"name": "GREFNET-AS",
"status": [
"active"
],
"entities": [
{
"handle": "GREF4-RIPE",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"\"GREFNET\" Miroslaw Grefkowicz contact"
],
[
"kind",
{},
"text",
"group"
],
[
"adr",
{
"label": "Humin 1A\n99-417 Bolimow\nPoland"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+48 695330279"
],
[
"email",
{
"type": "abuse"
},
"text",
"[email protected]"
]
]
],
"roles": [
"administrative",
"technical"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/197479",
"rel": "self",
"href": "https://rdap.db.ripe.net/entity/GREF4-RIPE"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity"
},
{
"handle": "ORG-GA244-RIPE",
"vcardArray": [
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[
[
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{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"\"GREFNET\" Miroslaw Grefkowicz"
],
[
"kind",
{},
"text",
"org"
],
[
"adr",
{
"label": "Humin 1A\n99-417 Bolimow\nPoland"
},
"text",
[
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"",
"",
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"",
""
]
]
]
],
"roles": [
"registrant"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/197479",
"rel": "self",
"href": "https://rdap.db.ripe.net/entity/ORG-GA244-RIPE"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity"
},
{
"handle": "RIPE-NCC-END-MNT",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
],
"roles": [
"registrant"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/197479",
"rel": "self",
"href": "https://rdap.db.ripe.net/entity/RIPE-NCC-END-MNT"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity"
},
{
"handle": "WITRYNA-MNT",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
],
"roles": [
"registrant"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/197479",
"rel": "self",
"href": "https://rdap.db.ripe.net/entity/WITRYNA-MNT"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity"
},
{
"handle": "GREF4-RIPE",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"\"GREFNET\" Miroslaw Grefkowicz contact"
],
[
"kind",
{},
"text",
"group"
],
[
"adr",
{
"label": "Humin 1A\n99-417 Bolimow\nPoland"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+48 695330279"
],
[
"email",
{
"type": "abuse"
},
"text",
"[email protected]"
]
]
],
"roles": [
"abuse"
],
"entities": [
{
"handle": "WITRYNA-MNT",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
],
"roles": [
"registrant"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/197479",
"rel": "self",
"href": "https://rdap.db.ripe.net/entity/WITRYNA-MNT"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity"
}
],
"objectClassName": "entity"
}
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/197479",
"rel": "rdap-up",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-up/AS197479",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/197479",
"rel": "rdap-up rdap-active",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-up/AS197479?status=active",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/197479",
"rel": "rdap-down",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-down/AS197479",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/197479",
"rel": "rdap-top",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-top/AS197479",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/197479",
"rel": "rdap-top rdap-active",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-top/AS197479?status=active",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/197479",
"rel": "rdap-bottom",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-bottom/AS197479",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/197479",
"rel": "self",
"href": "https://rdap.db.ripe.net/autnum/197479",
"type": "application/rdap+json"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"events": [
{
"eventAction": "registration",
"eventDate": "2010-12-20T10:28:35Z"
},
{
"eventAction": "last changed",
"eventDate": "2021-07-11T09:15:38Z"
}
],
"rdapConformance": [
"nro_rdap_profile_asn_flat_0",
"rirSearch1",
"autnums",
"cidr0",
"rdap_level_0",
"nro_rdap_profile_0",
"redacted"
],
"notices": [
{
"title": "Filtered",
"description": [
"This output has been filtered."
]
},
{
"title": "Whois Inaccuracy Reporting",
"description": [
"If you see inaccuracies in the results, please visit:"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/197479",
"rel": "inaccuracy-report",
"href": "https://www.ripe.net/contact-form?topic=ripe_dbm&show_form=true",
"type": "text/html"
}
]
},
{
"title": "Source",
"description": [
"Objects returned came from source",
"RIPE"
]
},
{
"title": "Terms and Conditions",
"description": [
"This is the RIPE Database query service. The objects are in RDAP format."
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/197479",
"rel": "terms-of-service",
"href": "http://www.ripe.net/db/support/db-terms-conditions.pdf",
"type": "application/pdf"
}
]
}
],
"port43": "whois.ripe.net",
"objectClassName": "autnum",
"redacted": [
{
"name": {
"description": "Personal e-mail information"
},
"reason": {
"description": "Personal data"
},
"prePath": "$.entities[?(@.handle=='GREF4-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
"method": "removal"
},
{
"name": {
"description": "Personal e-mail information"
},
"reason": {
"description": "Personal data"
},
"prePath": "$.entities[?(@.handle=='ORG-GA244-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
"method": "removal"
},
{
"name": {
"description": "Personal e-mail information"
},
"reason": {
"description": "Personal data"
},
"prePath": "$.entities[?(@.handle=='GREF4-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
"method": "removal"
}
]
} Contact details of private individuals are redacted.