[REN-BGP-stats-all] Global R&E Routing Table Report - CERNET R&E view
REN Routing Table Report
cscora at frr.nsrc.org
Sun Oct 10 20:10:28 UTC 2021
Global R&E Routing Table Report 20:10 GMT Sun 10 Oct, 2021
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/CERNET/
Analysis Summary
----------------
BGP routing table entries examined: 17286
Prefixes after maximum aggregation (per Origin AS): 7856
Deaggregation factor: 2.20
Unique aggregates announced (without unneeded subnets): 7141
Total ASes present in the Internet Routing Table: 2663
Prefixes per ASN: 6.49
Origin-only ASes present in the Internet Routing Table: 2290
Origin ASes announcing only one prefix: 1069
Transit ASes present in the Internet Routing Table: 373
Transit-only ASes present in the Internet Routing Table: 60
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 14
Max AS path prepend of ASN ( 10497) 11
Prefixes from unregistered ASNs in the Routing Table: 18
Number of instances of unregistered ASNs: 18
Number of 32-bit ASNs allocated by the RIRs: 37460
Number of 32-bit ASNs visible in the Routing Table: 601
Prefixes from 32-bit ASNs in the Routing Table: 1772
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 784
Prefixes being announced from unallocated address space: 10
Number of addresses announced to Internet: 151916032
Equivalent to 9 /8s, 14 /16s and 14 /24s
Percentage of available address space announced: 4.1
Percentage of allocated address space announced: 4.1
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.5
Total number of prefixes smaller than registry allocations: 6848
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4057
Total APNIC prefixes after maximum aggregation: 1335
APNIC Deaggregation factor: 3.04
Prefixes being announced from the APNIC address blocks: 1541
Unique aggregates announced from the APNIC address blocks: 680
APNIC Region origin ASes present in the Internet Routing Table: 562
APNIC Prefixes per ASN: 2.74
APNIC Region origin ASes announcing only one prefix: 244
APNIC Region transit ASes present in the Internet Routing Table: 55
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 13
Number of APNIC region 32-bit ASNs visible in the Routing Table: 217
Number of APNIC addresses announced to Internet: 23124992
Equivalent to 1 /8s, 96 /16s and 220 /24s
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-64098, 64297-64395, 131072-147769
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
222/8, 223/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 7458
Total ARIN prefixes after maximum aggregation: 3314
ARIN Deaggregation factor: 2.25
Prefixes being announced from the ARIN address blocks: 9328
Unique aggregates announced from the ARIN address blocks: 3167
ARIN Region origin ASes present in the Internet Routing Table: 1147
ARIN Prefixes per ASN: 8.13
ARIN Region origin ASes announcing only one prefix: 418
ARIN Region transit ASes present in the Internet Routing Table: 158
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 14
Number of ARIN region 32-bit ASNs visible in the Routing Table: 152
Number of ARIN addresses announced to Internet: 89805184
Equivalent to 5 /8s, 90 /16s and 81 /24s
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959, 46080-47103
53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8,
54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8,
66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8,
73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8,
99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 3355
Total RIPE prefixes after maximum aggregation: 2590
RIPE Deaggregation factor: 1.30
Prefixes being announced from the RIPE address blocks: 5470
Unique aggregates announced from the RIPE address blocks: 3145
RIPE Region origin ASes present in the Internet Routing Table: 661
RIPE Prefixes per ASN: 8.28
RIPE Region origin ASes announcing only one prefix: 314
RIPE Region transit ASes present in the Internet Routing Table: 105
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 14
Number of RIPE region 32-bit ASNs visible in the Routing Table: 127
Number of RIPE addresses announced to Internet: 28914304
Equivalent to 1 /8s, 185 /16s and 50 /24s
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-45055, 47104-52223, 56320-58367
59392-61439, 61952-62463, 64396-64495
196608-213403
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8,
83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8,
90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8,
141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
193/8, 194/8, 195/8, 212/8, 213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 1516
Total LACNIC prefixes after maximum aggregation: 430
LACNIC Deaggregation factor: 3.53
Prefixes being announced from the LACNIC address blocks: 2
Unique aggregates announced from the LACNIC address blocks: 2
LACNIC Region origin ASes present in the Internet Routing Table: 183
LACNIC Prefixes per ASN: 0.01
LACNIC Region origin ASes announcing only one prefix: 72
LACNIC Region transit ASes present in the Internet Routing Table: 26
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 12
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 80
Number of LACNIC addresses announced to Internet: 131072
Equivalent to 0 /8s, 2 /16s and 0 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-272796 + ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
191/8, 200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 882
Total AfriNIC prefixes after maximum aggregation: 183
AfriNIC Deaggregation factor: 4.82
Prefixes being announced from the AfriNIC address blocks: 151
Unique aggregates announced from the AfriNIC address blocks: 135
AfriNIC Region origin ASes present in the Internet Routing Table: 46
AfriNIC Prefixes per ASN: 3.28
AfriNIC Region origin ASes announcing only one prefix: 21
AfriNIC Region transit ASes present in the Internet Routing Table: 10
Average AfriNIC Region AS path length visible: 4.1
Max AfriNIC Region AS path length visible: 8
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 25
Number of AfriNIC addresses announced to Internet: 9690880
Equivalent to 0 /8s, 147 /16s and 223 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 609 2000 196 SINET-AS Research Organization of Infor
1237 188 33 3 KREONET-AS-KR KISTI, KR
7575 175 315 51 AARNET-AS-AP Australian Academic and Re
58647 164 16 1 KAGAWAU-AS Kagawa University, JP
55824 128 18 19 NKN-CORE-NW NKN Core Network, IN
4538 109 1378 37 ERX-CERNET-BKB China Education and Rese
4621 81 3 6 UNINET-AS-AP UNINET-, TH
4762 65 4 1 MAHIDOL-BORDER-AS Mahidol University, T
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
1659 57 1330 21 ERX-TANET-ASN1 Taiwan Academic Network
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7896 250 50 5 NU-AS, US
376 234 163 32 RISQ-AS, CA
5786 195 16 1 UPRENET, PR
2152 156 404 46 CSUNET-NW, US
18558 136 18 4 NETBLK-RCOEK, US
2920 112 16 1 LACOE, US
21976 86 49 15 NJEDGE-NET, US
1736 80 16 1 MU-AS, US
3 78 528 13 MIT-GATEWAYS, US
3477 72 69 25 NOAA-NWAVE, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 276 1979 235 DFN Verein zur Foerderung eines Deutsch
786 186 1732 177 JANET Jisc Services Limited, GB
8895 143 0 2 ISU Internet Services Unit ISU, SA
559 115 550 106 SWITCH Peering requests: peering at switch
1103 98 1520 85 SURFNET-NL SURFnet, The Netherlands, NL
137 82 653 75 ASGARR Consortium GARR, IT
553 72 449 72 BELWUE BelWue-Koordination, DE
2200 67 647 61 FR-RENATER Reseau National de telecommu
2614 62 28 37 ROEDUNET, RO
1930 57 81 52 RCCN Fundacao para a Ciencia e a Tecnol
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 182 81 7 Associacao Rede Nacional de Ensino e Pe
28391 152 10 66 Universidad Juarez Autonoma de Tabasco,
11340 94 22 46 Red Universitaria Nacional, CL
1251 65 12 2 FUNDACAO DE AMPARO A PESQUISA DO ESTADO
2715 60 69 34 Fundacao Carlos Chagas Filho de Amparo
52286 53 4 31 Columbus Networks Guatemala, GT
19611 44 16 1 Associacao Antonio Vieira - Unisinos, B
4270 42 16 1 Red de Interconexion Universitaria, AR
61468 41 2 11 CEDIA, EC
28614 38 1 1 Fundacao Universidade Regional de Blume
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2018 343 319 73 TENET-1, ZA
327687 135 28 3 RENU, UG
36914 92 82 3 KENET-AS, KE
2561 72 5 31 EUN, EG
8094 50 48 4 PUKNET, ZA
327700 39 16 1 MoRENet, MZ
37215 32 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37074 11 8 2 UG-AS, GH
37501 11 49 6 UOFS, ZA
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 609 2000 196 SINET-AS Research Organization of Infor
2018 343 319 73 TENET-1, ZA
680 276 1979 235 DFN Verein zur Foerderung eines Deutsch
7896 250 50 5 NU-AS, US
376 234 163 32 RISQ-AS, CA
5786 195 16 1 UPRENET, PR
1237 188 33 3 KREONET-AS-KR KISTI, KR
786 186 1732 177 JANET Jisc Services Limited, GB
1916 182 81 7 Associacao Rede Nacional de Ensino e Pe
7575 175 315 51 AARNET-AS-AP Australian Academic and Re
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
2018 343 270 TENET-1, ZA
7896 250 245 NU-AS, US
376 234 202 RISQ-AS, CA
5786 195 194 UPRENET, PR
1237 188 185 KREONET-AS-KR KISTI, KR
1916 182 175 Associacao Rede Nacional de Ensino e Pesquisa,
58647 164 163 KAGAWAU-AS Kagawa University, JP
8895 143 141 ISU Internet Services Unit ISU, SA
18558 136 132 NETBLK-RCOEK, US
327687 135 132 RENU, UG
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
14822 UNALLOCATED 40.163.0.0/16 10466 MAGPI, US
14822 UNALLOCATED 40.163.0.0/17 10466 MAGPI, US
14822 UNALLOCATED 40.163.6.0/24 10466 MAGPI, US
14822 UNALLOCATED 40.163.64.0/24 10466 MAGPI, US
14822 UNALLOCATED 40.163.70.0/24 10466 MAGPI, US
14822 UNALLOCATED 40.163.128.0/17 10466 MAGPI, US
22063 UNALLOCATED 53.10.0.0/16 2152 CSUNET-NW, US
394784 UNALLOCATED 92.107.242.0/24 40831 PHS, US
396334 UNALLOCATED 5.143.136.0/21 5078 ONENET-AS-1, US
396334 UNALLOCATED 5.143.136.0/24 5078 ONENET-AS-1, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
0.135.25.0/24 7896 NU-AS, US
0.28.128.0/18 13796 UCONN-ARIN, US
0.228.121.0/24 397380 TEMPLE-HEALTH, US
0.33.64.0/18 36441 UGA-ASN, US
0.73.144.0/21 34511 F-INTEGRA-AS Manresa 5, ES
0.73.152.0/23 34511 F-INTEGRA-AS Manresa 5, ES
0.73.156.0/22 34511 F-INTEGRA-AS Manresa 5, ES
0.94.160.0/20 21274 BAS-NET-AS, BY
0.96.11.0/24 2614 ROEDUNET, RO
0.96.21.0/24 6693 UNIBUC, RO
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-dsua
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
23.136.65.0/24 Origin: 23767 A-STAR-AS-AP A-STAR, SG
23.136.65.0/24 Transit: 23855 SINGAREN-GIX-AS-AP Singapore Advanced Re
23.136.66.0/24 Origin: 23767 A-STAR-AS-AP A-STAR, SG
23.136.66.0/24 Transit: 23855 SINGAREN-GIX-AS-AP Singapore Advanced Re
23.136.67.0/24 Origin: 23767 A-STAR-AS-AP A-STAR, SG
23.136.67.0/24 Transit: 23855 SINGAREN-GIX-AS-AP Singapore Advanced Re
23.136.68.0/24 Origin: 23767 A-STAR-AS-AP A-STAR, SG
23.136.68.0/24 Transit: 23855 SINGAREN-GIX-AS-AP Singapore Advanced Re
23.136.69.0/24 Origin: 23767 A-STAR-AS-AP A-STAR, SG
23.136.69.0/24 Transit: 23855 SINGAREN-GIX-AS-AP Singapore Advanced Re
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:0 /9:1 /10:2 /11:1 /12:10
/13:18 /14:32 /15:117 /16:1928 /17:370 /18:419
/19:529 /20:795 /21:809 /22:1338 /23:1382 /24:9445
/25:30 /26:24 /27:35 /28:1 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
2907 330 609 SINET-AS Research Organization of Information a
2018 249 343 TENET-1, ZA
1916 171 182 Associacao Rede Nacional de Ensino e Pesquisa,
680 138 276 DFN Verein zur Foerderung eines Deutschen Forsc
327687 130 135 RENU, UG
1237 106 188 KREONET-AS-KR KISTI, KR
11340 92 94 Red Universitaria Nacional, CL
2561 72 72 EUN, EG
376 71 234 RISQ-AS, CA
4621 68 81 UNINET-AS-AP UNINET-, TH
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:258 2:603 3:789 4:533 5:272 6:266
7:225 8:128 9:192 10:113 11:33 12:175
13:4 14:23 16:85 17:75 18:38 19:10
20:16 21:17 22:10 23:8 25:1 28:81
29:175 30:95 31:88 32:61 33:138 34:95
36:187 37:139 38:9 39:5 40:36 41:2
42:43 43:35 44:54 46:124 47:58 48:159
49:13 50:40 51:6 52:77 53:11 54:24
55:50 56:66 57:25 58:45 59:19 60:25
61:16 62:19 63:61 64:41 65:54 66:1
67:16 68:163 69:10 70:50 71:1 72:2
73:2 75:30 76:8 77:10 78:1 79:12
80:20 81:12 82:6 84:4 85:39 86:3
87:18 88:13 89:3 90:54 91:36 92:1257
93:248 94:141 95:94 96:180 97:5 98:445
99:236
End of report
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