AS51561 — ICUK Computing Services Ltd ICUK.net
AS Name: AS-ICUK
Organization: ORG-ICSL4-RIPE
Registry: RIPE
⚠️ CIRCL BGP Security Rank: 0.0145% (position 8895)
aut-num: AS51561
as-name: AS-ICUK
org: ORG-ICSL4-RIPE
import: from AS174 accept ANY
import: from AS3356 accept ANY
import: from AS2914 accept ANY
export: to AS174 announce AS-ICUK
export: to AS3356 announce AS-ICUK
export: to AS2914 announce AS-ICUK
admin-c: DUMY-RIPE
tech-c: DUMY-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: ICUK-MNT
created: 2010-09-28T13:41:49Z
last-modified: 2026-02-24T16:52:22Z
source: RIPE
remarks: cf-validation: 30b6d34f3d64496a9a733f6622439db3
remarks: ****************************
remarks: * THIS OBJECT IS MODIFIED
remarks: * Please note that all data that is generally regarded as personal
remarks: * data has been removed from this object.
remarks: * To view the original object, please query the RIPE Database at:
remarks: * http://www.ripe.net/whois
remarks: ****************************
Direct Membership
Macros that directly list AS51561 as a member:
AS-ICUK(10 members)
AS-LONAP-MLP-V6(246 members)
AS-LONAP-MLP(267 members)
AS-LONAP-CONNECTED(304 members)
AS-SET-LONAP-CONNECTED(573 members)
AS13335:AS-CUSTOMERS(1521 members)
AS-ITXBR1(1794 members)
AS-NWN-TRANSIT(2017 members)
AS-REACH-CUSTOMERS(8210 members)
AS-TELSTRA-INTL-CUSTOMERS(11248 members)
AS-HURRICANEV6(20402 members)
Expanded Membership
All macros containing AS51561 (directly or via nested macros): 421
Show 100 macros
AS-ICUK(10 ASNs)
AS-LONAP-MLP-V6(246 ASNs)
AS-LONAP-MLP(267 ASNs)
AS-LONAP-CONNECTED(304 ASNs)
AS13335:AS-CUSTOMERS(1,521 ASNs)
AS-NWN-TRANSIT(2,017 ASNs)
AS6830:AS-AORTAUS(2,041 ASNs)
AS-ITXBR1(4,615 ASNs)
AS-MEGATELECOM-CUSTOMERS(5,157 ASNs)
AS-MEGA(5,160 ASNs)
AS-MEGATELECOM(5,166 ASNs)
AS-INTERTAX(5,306 ASNs)
AS-OPENX(5,734 ASNs)
AS-NOVVACORE(5,795 ASNs)
AS-NOVVACORE-CUSTOMERS(5,795 ASNs)
AS-G8(6,078 ASNs)
AS-MILECOM(6,301 ASNs)
AS20730:AS-DVO-IX(6,301 ASNs)
AS-FLYS(6,441 ASNs)
AS-TIVIT(6,449 ASNs)
AS-ZSTTK-SET(6,735 ASNs)
AS-MILECOM-RS(7,417 ASNs)
AS-RBIX(7,603 ASNs)
AS-REACH-CUSTOMERS(8,210 ASNs)
AS272713:AS-CDNSTAR-CUSTOMERS(8,304 ASNs)
AS272713:AS-CDNSTAR(8,471 ASNs)
AS24748:AS-IX(8,694 ASNs)
AS-HUGENET(9,689 ASNs)
AS-HUGENET-CUSTOMERS(9,689 ASNs)
AS-SEABORN-G2(10,828 ASNs)
AS-AORTA(11,961 ASNs)
AS6830:AS-AORTA(11,961 ASNs)
AS-FIORD(12,063 ASNs)
AS-FIORD-V6(12,063 ASNs)
AS-TELSTRA-INTL-CUSTOMERS(12,472 ASNs)
AS-IHOME(12,653 ASNs)
AS-MTU-V6(13,582 ASNs)
AS-ERTH(14,365 ASNs)
AS-SMRROUTESERVER(14,365 ASNs)
AS-OMTT-SET(14,375 ASNs)
AS-ULNIX(14,449 ASNs)
AS-KRS-IX-PEERS(14,475 ASNs)
AS-W-IX(14,497 ASNs)
AS-VLVROUTESERVER(14,501 ASNs)
AS-PITER-IX-TLL(14,528 ASNs)
AS57304:AS-RETN6-RU(14,630 ASNs)
AS57304:AS-RETN-RU(14,717 ASNs)
AS-SIBIR-IX(14,827 ASNs)
AS41073:AS-INEX-PEERS(14,843 ASNs)
AS-RED-IX-PEERS(15,552 ASNs)
AS-SEABORN-CUSTOMER(16,137 ASNs)
AS-SEABORN-CORE(16,222 ASNs)
AS-KRD-RS(17,283 ASNs)
AS-CLOUD-IX-M(17,536 ASNs)
AS-CLOUD-IX(17,641 ASNs)
AS-CITYTELECOM(17,663 ASNs)
AS-HOSTER(17,663 ASNs)
AS-SEABORN(17,733 ASNs)
AS-SPBROUTESERVER(17,816 ASNs)
AS-CN2(17,842 ASNs)
AS-WIOCC(18,067 ASNs)
AS-1031-PEER1(18,971 ASNs)
AS-LINKBRASIL-271253(19,032 ASNs)
AS271253:AS-CUSTOMERS(19,032 ASNs)
AS-ST1-PEERINGS(19,133 ASNs)
AS-AS53013(20,143 ASNs)
AS-HURRICANEV6(20,402 ASNs)
AS-SEECIX-V6(20,691 ASNs)
AS56858:AS-SEECIX-V6(20,691 ASNs)
AS-DECIX-RIC-V6(20,721 ASNs)
AS393752:AS-DECIX-RIC-V6(20,721 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-TIX(21,568 ASNs)
AS-LITIX-V6(22,027 ASNs)
AS-T-CIX-V6(22,807 ASNs)
AS-XO(23,361 ASNs)
AS-VSNL-IN(23,661 ASNs)
AS-BALT-IX-V6(23,949 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-CIXP(24,509 ASNs)
AS3491:AS-CUSTOMERS-NA(25,092 ASNs)
AS-FIXO-V6(25,776 ASNs)
AS-MFNX(26,187 ASNs)
AS47214:AS-LILLIX(26,738 ASNs)
AS43100:AS-MEMBERS(26,826 ASNs)
AS-SFINX-RS-MEMBERS-IPV6(26,914 ASNs)
AS-SFINX-RS-MEMBERS(26,976 ASNs)
AS-DECIX-BCN-V6(28,476 ASNs)
AS57802:AS-DECIX-BCN-V6(28,476 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-SWISS-IX(28,564 ASNs)
AS-DECIX-ORD-V6(31,479 ASNs)
AS62760:AS-DECIX-ORD-V6(31,479 ASNs)
AS-DECIX-LIS-V6(32,541 ASNs)
AS43729:AS-DECIX-LIS-V6(32,541 ASNs)
AS-DECIX-BCN(33,636 ASNs)
AS57802:AS-DECIX-BCN(33,636 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-EQUINIX-PA(34,681 ASNs)
AS-SOVAM(34,887 ASNs)
AS-CWCCUSTOMERS(34,940 ASNs)
AS-MERCURY(34,969 ASNs)
AS-UUNETEUDE(34,985 ASNs)
AS702:AS-DE-CUSTOMER(34,985 ASNs)
... and 321 more
Upstream AS Paths
87 unique paths, avg length 1.8
AS Looking Glass
Upstream paths (matching graph above)
All 87 Upstream Paths
Complete list of all observed paths
AS1031 → AS51561
AS2914 → AS51561
AS5413 → AS51561
AS6939 → AS51561
AS8455 → AS51561
AS13335 → AS51561
AS24482 → AS51561
AS25091 → AS51561
AS36236 → AS51561
AS37100 → AS51561
AS38880 → AS51561
AS39120 → AS51561
AS45352 → AS51561
AS49544 → AS51561
AS52075 → AS51561
AS52320 → AS51561
AS53062 → AS51561
AS56665 → AS51561
AS58511 → AS51561
AS61573 → AS51561
AS63927 → AS51561
AS132337 → AS51561
AS137409 → AS51561
AS51561 IPv4 Address Subnets (58)
| 188.240.160.0/19 | 🇬🇧 GB | Interdsl | AS-ICUK |
| 46.102.192.0/19 | 🇬🇧 GB | Interdsl | AS-ICUK |
| 46.33.128.0/19 | 🇬🇧 GB | Interdsl | AS-ICUK |
| 80.209.128.0/19 | 🇬🇧 GB | AS-ICUK | |
| 138.124.128.0/20 | 🇬🇧 GB | AS-ICUK | |
| 80.209.160.0/20 | 🇬🇧 GB | AS-ICUK | |
| 80.95.192.0/20 | 🇬🇧 GB | AS-ICUK | |
| 80.209.176.0/21 | 🇬🇧 GB | AS-ICUK | |
| 185.145.152.0/22 | 🇬🇧 GB | AS-ICUK | |
| 185.2.236.0/22 | 🇬🇧 GB | Interdsl | AS-ICUK |
AS51561 IPv6 Address Subnets (2)
| 2a00:b900::/32 | 🇬🇧 GB | Interdsl | AS-ICUK |
| 2a00:b900:2::/48 | 🇬🇧 GB | AS-ICUK |