AS21369 — SEMA-UK-AS
AS Name: SEMA-UK-AS
Organization: ORG-AISU1-RIPE
Registry: RIPE
aut-num: AS21369
as-name: SEMA-UK-AS
org: ORG-AISU1-RIPE
remarks: Will advertise network 192.12.43.0/24
remarks: ------------------------------------------------------
remarks: *
remarks: Verizon Peering
remarks: *
remarks: ------------------------------------------------------
import: from AS702 action pref=100; accept ANY
export: to AS702 announce AS21369
remarks: ------------------------------------------------------
remarks: *
remarks: Level3 Peering
remarks: *
remarks: ------------------------------------------------------
import: from AS3356 action pref=100; accept ANY
import: from AS3549 action pref=100; accept ANY
export: to AS3356 announce AS21369
export: to AS3549 announce AS21369
remarks: ------------------------------------------------------
remarks: *
remarks: Zayo Peering
remarks: *
remarks: ------------------------------------------------------
import: from AS6461 action pref=100; accept ANY
export: to AS6461 announce AS21369
remarks: ------------------------------------------------------
remarks: *
remarks: ConvergenceGroup Peering
remarks: *
remarks: ------------------------------------------------------
import: from AS41811 action pref=100; accept ANY
export: to AS41811 announce AS21369
remarks: ------------------------------------------------------
remarks: *
remarks: BGP Off-ramping Peering
remarks: *
remarks: ------------------------------------------------------
import: from AS198949 action pref=100; accept ANY
export: to AS198949 announce AS21369
remarks: ------------------------------------------------------
remarks: *
remarks: Legacy peerings for review
remarks: *
remarks: ------------------------------------------------------
export: to AS8918 announce AS21369
import: from AS8918 action pref=100; accept ANY
import: from AS2856 action pref=100; accept ANY
default: to AS2856 action pref=100; networks ANY
remarks: ------------------------------------------------------
remarks: *
remarks: Last modified by Shared Services 03-01-2023
admin-c: DUMY-RIPE
tech-c: DUMY-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: SEMA-UK-AS-MNT
created: 2001-11-15T09:27:21Z
last-modified: 2023-01-03T10:00:37Z
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 AS21369 as a member:
AS-CONVERGENCE(10 members)
AS-BTGB-CUST(257 members)
AS-GBLXEU(273 members)
AS-COLTUK(279 members)
AS8220:AS-COLTUK(281 members)
AS-LEVEL3-ORIGINS-EU(7728 members)
Expanded Membership
All macros containing AS21369 (directly or via nested macros): 237
Show 100 macros
AS-CONVERGENCE(12 ASNs)
AS-PSINETUK-TRANSIT(55 ASNs)
AS-PSINETUK(56 ASNs)
AS-BTGB-CUST(256 ASNs)
AS-BTGB(259 ASNs)
AS-BTTOLINX(259 ASNs)
AS-GBLXEU(273 ASNs)
AS-BT-UK(329 ASNs)
AS-PSINET(600 ASNs)
AS-COLTUK(613 ASNs)
AS8220:AS-COLTUK(615 ASNs)
AS-BT-EU(755 ASNs)
AS-CONCERT(755 ASNs)
AS-CONCERTEU(755 ASNs)
AS5400:AS-BTGF(755 ASNs)
AS-GBLX(963 ASNs)
AS-COLTEU(3,133 ASNs)
AS8220:AS-COLTEU(3,155 ASNs)
AS-COLT(3,372 ASNs)
AS-IBSCUST(3,862 ASNs)
AS8220:AS-COLT(3,925 ASNs)
AS-SEABONECUSTIT(4,379 ASNs)
AS-CLARANETFR-PEERINGS(4,820 ASNs)
AS-LEVEL3-ORIGINS-EU(7,728 ASNs)
AS-LEVELTHREEEU(7,728 ASNs)
AS2914:AS-SA-V6(14,359 ASNs)
AS2914:AS-SA(14,363 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-CIXP(24,509 ASNs)
AS30781:AS-JAGUAR-PEERING-CIXP(27,405 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-SWISS-IX(28,564 ASNs)
AS30781:AS-JAGUAR-PEERING-SWISS-IX(31,389 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-EQUINIX-PA(34,681 ASNs)
AS30781:AS-JAGUAR-PEERING-EQUINIX-PA(37,230 ASNs)
AS-UUNETPIPEXLINX(38,009 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-FRANCE-IX-MARSEILLE(44,422 ASNs)
AS30781:AS-JAGUAR-PEERING-FRANCE-IX-MARSEILLE(46,036 ASNs)
AS2914:AS-US-V6(52,836 ASNs)
AS2914:AS-US(53,991 ASNs)
AS-TOPIX-RS(57,252 ASNs)
AS1273:AS-CWW(59,499 ASNs)
AS-SET-INEX-RS(60,298 ASNs)
AS-BCIX-RS(61,123 ASNs)
AS16374:AS-BCIX-RS(61,123 ASNs)
AS-CW6(66,853 ASNs)
AS1273:AS-CWW-V6(66,853 ASNs)
AS-SET-INEX-CONNECTED(67,097 ASNs)
AS-UAEIX(67,297 ASNs)
AS61374:AS-UAEIX(67,297 ASNs)
AS-CW(67,352 ASNs)
AS2914:AS-ASIA-V6(68,905 ASNs)
AS-SEABONECUSTEU(69,169 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)
AS17645:AS-NTTS(70,764 ASNs)
AS17645:AS-NTTS-IP(70,764 ASNs)
AS2914:AS-ASIA(70,764 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-UAEIX-V6(71,954 ASNs)
AS61374:AS-UAEIX-V6(71,954 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)
AS-EBONE(73,672 ASNs)
AS-ST1-UPSTREAMS(73,733 ASNs)
AS-DECIX-HAM(73,753 ASNs)
AS-WORKIX(73,753 ASNs)
AS43252:AS-DECIX-HAM(73,753 ASNs)
AS-DECIX-MRS(73,755 ASNs)
... and 137 more
Upstream AS Paths
68 unique paths, avg length 2.7
AS Looking Glass
Upstream paths (matching graph above)
AS21369 IPv4 Address Subnets (46)
| 157.203.120.0/23 | 🇬🇧 GB | AS21369 | SEMA-UK-AS |
| 157.203.176.0/23 | 🇬🇧 GB | Atos UK | SEMA-UK-AS |
| 157.203.178.0/23 | 🇬🇧 GB | Atos UK | SEMA-UK-AS |
| 157.203.180.0/23 | 🇬🇧 GB | Atos UK | SEMA-UK-AS |
| 157.203.242.0/23 | 🇬🇧 GB | Atos Origin Internet Scottish Datacentre | SEMA-UK-AS |
| 157.203.254.0/23 | 🇬🇧 GB | Atos Origin IT Internet Aggregate | SEMA-UK-AS |
| 157.203.36.0/23 | 🇬🇧 GB | Atos UK | SEMA-UK-AS |
| 157.203.40.0/23 | 🇬🇧 GB | Atos UK | SEMA-UK-AS |
| 157.203.42.0/23 | 🇬🇧 GB | Atos UK | SEMA-UK-AS |
| 157.203.48.0/23 | 🇬🇧 GB | Atos UK | SEMA-UK-AS |