AS51088 β A2B Internet A2B Internet
AS Name: A2B
Organization: ORG-AIB25-RIPE
Registry: RIPE
Imports from (12)
Exports to (12)
aut-num: AS51088
as-name: A2B
org: ORG-AIB25-RIPE
remarks: ============================================================
remarks: AMS-IX peering
remarks: ============================================================
import: from AS51088:AS-PEERS-AMSIX action pref=80; accept ANY AND NOT {0.0.0.0/0}
export: to AS51088:AS-PEERS-AMSIX announce AS51088:AS-A2B
remarks: ============================================================
remarks: AMS-IX route server policy
remarks: ============================================================
import-via: AS6777 from AS-AMS-IX-RS EXCEPT AS61180:AS-PEERS-AMSIX accept ANY
export-via: AS6777 to AS-AMS-IX-RS EXCEPT AS61180:AS-PEERS-AMSIX announce AS51088:AS-A2B
remarks: ============================================================
remarks: A2B Internet customers
remarks: ============================================================
import: from AS57060 action pref=50; accept AS57060
export: to AS57060 announce ANY
import: from AS60358 action pref=50; accept AS60358
export: to AS60358 announce ANY
import: from AS200560 action pref=50; accept AS200560
export: to AS200560 announce ANY
import: from AS202169 action pref=50; accept AS202169
export: to AS202169 announce ANY
import: from AS206521 action pref=50; accept AS206521
export: to AS206521 announce ANY
import: from AS206637 action pref=50; accept AS-IQIP
export: to AS206637 announce ANY
import: from AS50266 action pref=50; accept AS-TMNL
export: to AS50266 announce AS51088:AS-TMNL-IXP-PEERS
remarks: ============================================================
remarks: Transits
remarks: ============================================================
import: from AS2914 action pref=100; accept ANY AND NOT {0.0.0.0/0}
export: to AS2914 announce AS51088:AS-A2B
import: from AS3257 action pref=100; accept ANY AND NOT {0.0.0.0/0}
export: to AS3257 announce AS51088:AS-A2B
import: from AS8455 action pref=100; accept ANY AND NOT {0.0.0.0/0}
export: to AS8455 announce AS51088:AS-A2B
remarks: ============================================================
remarks: Basic Interconnection Requirements
remarks: ============================================================
remarks:
remarks: The following is required to share a BGP session with
remarks: AS51088:
remarks:
remarks: - The customer's gateway router must be using BGP v4.
remarks: - The customer must use a RIR assigned ASN.
remarks: - The customer must have its customer-routes registered with
remarks: an instance of the IRR. Its 'as-set' must include the ASNs
remarks: originating routes and for each route exported a relevant
remarks: 'route' object is required.
remarks: - The customer must export its customer-routes reasonably
remarks: aggregated, and AS51088 will not accept any prefix that is
remarks: longer than a /24 (except for denial-of-service mitigation).
remarks: - The customer may use MED to signal its return path pre-
remarks: ference in AS51088.
remarks:
admin-c: DUMY-RIPE
tech-c: DUMY-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: A2B-INTERNET-MNT
created: 2010-05-28T12:48:01Z
last-modified: 2026-01-20T11:49:39Z
source: RIPE
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 AS51088 as a member:
AS-CAMBRIUM(3 members)
AS5413:AS-ROUTE-SERVER-AMS-IX(13 members)
AS50295:AS-PEERS-AMSIX(40 members)
AS-NFORCE-NL-IX-PEERS(45 members)
AS51088:AS-A2B(49 members)
AS49820:AS-AMS-IX-PEERS(52 members)
AS-SPEAKUP-AMSIX-RS(57 members)
AS-RIS-RRC03(82 members)
AS34968:AS-NL-IX-PEERS(89 members)
AS39647:AS-PEERS-AMS-IX(110 members)
AS9150:AS-PEERS-AMSIX(144 members)
AS34968:AS-AMS-IX-PEERS(199 members)
AS29169:AS-PEERS4(229 members)
AS29169:AS-PEERS6(229 members)
AS-SERVIHOSTING(454 members)
AS1200:AS-AMS-IX-PEERS(485 members)
AS-MANDA-AMSIX-PEERS-V6(559 members)
AS-MANDA-AMSIX-PEERS-V4(596 members)
AS6777:AS-AMS-IX-RS-V6(733 members)
AS3303:AS-SWCMPEERS(783 members)
AS6777:AS-AMS-IX-RS(802 members)
AS-GTTCUST6(2384 members)
AS-GTTCUST(3453 members)
Expanded Membership
All macros containing AS51088 (directly or via nested macros): 254
Show 100 macros
AS50295:AS-PEERS-AMSIX(40 ASNs)
AS-NFORCE-NL-IX-PEERS(45 ASNs)
AS49820:AS-AMS-IX-PEERS(52 ASNs)
AS5413:AS-ROUTE-SERVER-AMS-IX(54 ASNs)
AS-SPEAKUP-AMSIX-RS(57 ASNs)
AS-A2B(82 ASNs)
AS-CAMBRIUM(82 ASNs)
AS-RIS-RRC03(82 ASNs)
AS51088:AS-A2B(82 ASNs)
AS34968:AS-NL-IX-PEERS(89 ASNs)
AS39647:AS-PEERS-AMS-IX(110 ASNs)
AS9150:AS-PEERS-AMSIX(144 ASNs)
AS34968:AS-AMS-IX-PEERS(199 ASNs)
AS29169:AS-PEERS4(229 ASNs)
AS29169:AS-PEERS6(229 ASNs)
AS51088:AS-TMNL-IXP-PEERS(394 ASNs)
AS1200:AS-AMS-IX-PEERS(485 ASNs)
AS-MANDA-AMSIX-PEERS-V6(559 ASNs)
AS-MANDA-AMSIX-PEERS-V4(596 ASNs)
AS6777:AS-AMS-IX-RS-V6(733 ASNs)
AS3303:AS-SWCMPEERS(783 ASNs)
AS6777:AS-AMS-IX-RS(802 ASNs)
AS39521:AS-AMS-IX-PEERS(803 ASNs)
AS-SERVIHOSTING(1,006 ASNs)
AS-PITER-IX-FRA(27,939 ASNs)
AS-DECIX-BCN-V6(28,476 ASNs)
AS57802:AS-DECIX-BCN-V6(28,476 ASNs)
AS-DECIX-BCN(33,636 ASNs)
AS57802:AS-DECIX-BCN(33,636 ASNs)
AS-RETN6(44,950 ASNs)
AS-TELIANETRU-V6(45,288 ASNs)
AS1299:AS-TWELVE99-RU-V6(45,288 ASNs)
AS-RETN(47,667 ASNs)
AS-BIX-V6(56,058 ASNs)
AS-TELIANETRU(56,840 ASNs)
AS1299:AS-TWELVE99-RU-V4(56,840 ASNs)
AS-PLIX6(60,222 ASNs)
AS-SET-INEX-RS(60,298 ASNs)
AS-BCIX-RS(61,123 ASNs)
AS16374:AS-BCIX-RS(61,123 ASNs)
AS-SOVAM-V6(64,052 ASNs)
AS-SOVAM6(64,052 ASNs)
AS-PANTEL(65,191 ASNs)
AS-TTI(65,191 ASNs)
AS206221:AS-ERA-IX-AMSTERDAM(65,700 ASNs)
AS-ERA-IX(65,707 ASNs)
AS5405:AS-INTERDOTLINK(66,620 ASNs)
AS-STUTTGARTIX-RS(66,636 ASNs)
AS-CW6(66,853 ASNs)
AS1273:AS-CWW-V6(66,853 ASNs)
AS201561:AS-DECIX-CPH(66,988 ASNs)
AS201561:AS-DECIX-CPH-V6(66,988 ASNs)
AS-SET-INEX-CONNECTED(67,097 ASNs)
AS-CW(67,352 ASNs)
AS-SIXSK-SETS(67,561 ASNs)
AS-BIX(68,877 ASNs)
AS-SEABONECUSTEU(69,169 ASNs)
AS-FRYS-IX-CONNECTED(69,468 ASNs)
AS-BIX-BG(69,751 ASNs)
AS-NETIX-INT(69,913 ASNs)
AS43380:AS-DTEL-IX(69,913 ASNs)
AS-KIVIX(69,914 ASNs)
AS52055:AS-NETIX-GR(69,958 ASNs)
AS-SIX(70,009 ASNs)
AS-UBNIX(70,042 ASNs)
AS-GLOBAL-IX(70,222 ASNs)
AS-EPIX-LOCAL(70,298 ASNs)
AS-EPIX(70,299 ASNs)
AS-C4LPEERS(70,320 ASNs)
AS56584:AS-SET-INTERIX-RS(70,331 ASNs)
AS-NETIX-NET(71,038 ASNs)
AS-IU-CL(71,146 ASNs)
AS-TSUA-PARITY(71,146 ASNs)
AS-UAIX(71,146 ASNs)
AS-UDC2UTEL(71,146 ASNs)
AS25229:AS-PARITY(71,150 ASNs)
AS-KIKE(71,185 ASNs)
AS21011:AS-PEERS-UA(71,230 ASNs)
AS21011:AS-UA(71,230 ASNs)
AS56584:AS-INTERIX(71,301 ASNs)
AS-SEABONE(71,409 ASNs)
AS3320:AS-DTAG-V6(71,426 ASNs)
AS-ROMANIA(71,783 ASNs)
AS-DECIX-MAD(71,930 ASNs)
AS48793:AS-DECIX-MAD(71,930 ASNs)
AS-SIXSK-SETS-V6(71,982 ASNs)
AS-INTERLANRO(72,156 ASNs)
AS43289:AS-PEERS(72,157 ASNs)
AS-PEERINGCZ-RS(72,214 ASNs)
AS-DECIX-PMO-V6(72,294 ASNs)
AS25083:AS-DECIX-PMO-V6(72,294 ASNs)
AS-DECIX-PMO(72,297 ASNs)
AS25083:AS-DECIX-PMO(72,297 ASNs)
AS29535:AS-TPIX(72,365 ASNs)
AS-DTAG(72,392 ASNs)
AS3320:AS-DTAG(72,392 ASNs)
AS-DECIX-DUS(73,592 ASNs)
AS56890:AS-DECIX-DUS(73,592 ASNs)
AS2914:AS-EUROPE-V6(73,647 ASNs)
AS-EBONE(73,672 ASNs)
... and 154 more
Upstream AS Paths
33 unique paths, avg length 1.4
AS Looking Glass
Upstream paths (matching graph above)
All 33 Upstream Paths
Complete list of all observed paths
AS1031 β AS51088
AS2914 β AS51088
AS3257 β AS51088
AS6057 β AS51088
AS6939 β AS51088
AS8298 β AS51088
AS13030 β AS51088
AS24482 β AS51088
AS25091 β AS51088
AS36236 β AS51088
AS37721 β AS51088
AS45437 β AS51088
AS49544 β AS51088
AS56662 β AS51088
AS56665 β AS51088
AS60144 β AS51088
AS61573 β AS51088
AS63927 β AS51088
AS132337 β AS51088
AS137409 β AS51088
AS202365 β AS51088
AS209823 β AS51088
AS51088 IPv4 Address Subnets (76)
| 46.244.0.0/19 | π³π± NL | A2B | |
| 46.244.96.0/19 | π³π± NL | A2B | |
| 46.244.96.0/20 | π³π± NL | A2B | |
| 178.249.152.0/21 | π³π± NL | A2B Internet BV | A2B |
| 31.134.200.0/21 | π³π± NL | DC1.AMSTEDAM Colo | A2B |
| 46.244.0.0/21 | π³π± NL | A2B | |
| 93.93.120.0/21 | π³π± NL | Gemeente Alkmaar | A2B |
| 104.152.52.0/22 | πΊπΈ US | RETHEMHOSTING | |
| 185.205.52.0/22 | π³π± NL | A2B Internet route | A2B |
| 185.225.220.0/22 | π³π± NL | Cloud2 - via A2B Internet | A2B |
AS51088 IPv6 Address Subnets (21)
| 2001:67c:1064::/48 | π³π± NL | T-EN-IPv6 | A2B |
| 2001:67c:eb0::/48 | π³π± NL | A2B | |
| 2a01:77e0::/32 | π³π± NL | Cloud2 IPv6 via A2B Internet | A2B |
| 2a02:1668::/32 | π³π± NL | A2B-INTERNET-V6 | A2B |
| 2a02:166a::/32 | π³π± NL | A2B-INTERNET-V6 | A2B |
| 2a02:166b::/32 | π³π± NL | A2B-INTERNET-V6 | A2B |
| 2a02:2738::/32 | π³π± NL | IPv6 Allocation Alkmaar | A2B |
| 2a02:7840::/32 | π³π± NL | A2B | |
| 2a04:6dc0::/32 | π³π± NL | A2B | |
| 2a05:2900::/29 | π³π± NL | A2B-INTERNET-V6 | A2B |