[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Wed Nov 6 20:10:39 UTC 2024
IPv4 R&E Routing Table Report 20:10 GMT Wed 06 Nov, 2024
IPv4 BGP Table (R&E) as seen at CERNET.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/CERNET/
Analysis Summary
----------------
BGP routing table entries examined: 17642
Prefixes after maximum aggregation (per Origin AS): 10008
Deaggregation factor: 1.76
Unique aggregates announced (without unneeded subnets): 11169
Number of IPv4 prefixes with a valid ROA: 7192
Number of IPv4 prefixes with an invalid ROA: 8
Number of IPv4 prefixes with no ROA: 10442
Total ASes present in the Internet Routing Table: 2674
Prefixes per ASN: 6.60
Origin-only ASes present in the Internet Routing Table: 2317
Origin ASes announcing only one prefix: 1027
Transit ASes present in the Internet Routing Table: 357
Transit-only ASes present in the Internet Routing Table: 61
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 28
Max AS path prepend of ASN (138136) 20
Prefixes from unregistered ASNs in the Routing Table: 1
Number of instances of unregistered ASNs: 1
Number of 32-bit ASNs allocated by the RIRs: 45777
Number of 32-bit ASNs visible in the Routing Table: 654
Prefixes from 32-bit ASNs in the Routing Table: 1810
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 0
Number of addresses announced to Internet: 192940624
Equivalent to 11 /8s, 128 /16s and 10 /24s
Percentage of available address space announced: 5.2
Percentage of allocated address space announced: 4.0
Percentage of available address space allocated: 128.8
Percentage of address space in use by end-sites: 99.6
Total number of prefixes smaller than registry allocations: 6130
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4039
Total APNIC prefixes after maximum aggregation: 2162
APNIC Deaggregation factor: 1.87
Prefixes being announced from the APNIC address blocks: 507
Unique aggregates announced from the APNIC address blocks: 423
APNIC Region origin ASes present in the Internet Routing Table: 569
APNIC Prefixes per ASN: 0.89
APNIC Region origin ASes announcing only one prefix: 242
APNIC Region transit ASes present in the Internet Routing Table: 55
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 28
Number of APNIC region 32-bit ASNs visible in the Routing Table: 226
Number of APNIC addresses announced to Internet: 8453120
Equivalent to 0 /8s, 128 /16s and 252 /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, 131072-153913
APNIC Address Blocks 43/8, 45/8, 146/8, 150/8, 160/8, 163/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 7611
Total ARIN prefixes after maximum aggregation: 4298
ARIN Deaggregation factor: 1.77
Prefixes being announced from the ARIN address blocks: 4496
Unique aggregates announced from the ARIN address blocks: 2981
ARIN Region origin ASes present in the Internet Routing Table: 1200
ARIN Prefixes per ASN: 3.75
ARIN Region origin ASes announcing only one prefix: 428
ARIN Region transit ASes present in the Internet Routing Table: 147
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN region 32-bit ASNs visible in the Routing Table: 203
Number of ARIN addresses announced to Internet: 30335808
Equivalent to 1 /8s, 206 /16s and 227 /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, 393216-402332
ARIN Address Blocks 66/8, 131/8, 137/8, 139/8, 144/8, 149/8, 162/8,
164/8, 192/8, 198/8, 199/8, 204/8, 205/8, 207/8,
208/8, 209/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 3576
Total RIPE prefixes after maximum aggregation: 2872
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 939
Unique aggregates announced from the RIPE address blocks: 869
RIPE Region origin ASes present in the Internet Routing Table: 666
RIPE Prefixes per ASN: 1.41
RIPE Region origin ASes announcing only one prefix: 294
RIPE Region transit ASes present in the Internet Routing Table: 105
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 156
Number of RIPE addresses announced to Internet: 13229824
Equivalent to 0 /8s, 201 /16s and 223 /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
196608-216475
RIPE Address Blocks 152/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 1427
Total LACNIC prefixes after maximum aggregation: 533
LACNIC Deaggregation factor: 2.68
Prefixes being announced from the LACNIC address blocks: 258
Unique aggregates announced from the LACNIC address blocks: 201
LACNIC Region origin ASes present in the Internet Routing Table: 152
LACNIC Prefixes per ASN: 1.70
LACNIC Region origin ASes announcing only one prefix: 51
LACNIC Region transit ASes present in the Internet Routing Table: 23
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 14
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 62
Number of LACNIC addresses announced to Internet: 1057280
Equivalent to 0 /8s, 16 /16s and 34 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-274844 + ERX transfers
LACNIC Address Blocks 72/8, 128/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 988
Total AfriNIC prefixes after maximum aggregation: 142
AfriNIC Deaggregation factor: 6.96
Prefixes being announced from the AfriNIC address blocks: 86
Unique aggregates announced from the AfriNIC address blocks: 49
AfriNIC Region origin ASes present in the Internet Routing Table: 25
AfriNIC Prefixes per ASN: 3.44
AfriNIC Region origin ASes announcing only one prefix: 12
AfriNIC Region transit ASes present in the Internet Routing Table: 8
Average AfriNIC Region AS path length visible: 5.2
Max AfriNIC Region AS path length visible: 9
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 7
Number of AfriNIC addresses announced to Internet: 795904
Equivalent to 0 /8s, 12 /16s and 37 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 161/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 590 2170 464 SINET-AS Research Organization of Informa
1237 191 74 145 KREONET-AS-KR KISTI, KR
58647 180 18 2 KAGAWAU-AS Kagawa University, JP
7575 172 329 115 AARNET-AS-AP Australian Academic and Rese
55824 132 18 19 NKN-CORE-NW NKN Core Network, IN
4538 113 4176 70 ERX-CERNET-BKB China Education and Resear
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 69 37 10 UNINET-AS-AP UNINET-, TH
2697 60 4 35 ERX-ERNET-AS Education and Research Netwo
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
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
376 201 162 150 RISQ-AS, CA
5786 197 16 1 UPRENET, PR
2920 175 34 7 LACOE, US
2152 150 507 97 CENIC-2152, US
18558 140 18 4 NETBLK-RCOEK, US
81 134 517 33 NCREN, US
23024 95 7 21 OCDE, US
21976 91 50 17 NJEDGE-NET, US
237 85 541 50 MERIT-AS-14, US
1736 79 16 1 MU-AS, 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
680 283 1899 249 DFN Verein zur Foerderung eines Deutschen
786 186 1767 183 JANET Jisc Services Limited, GB
8895 133 24 5 ISU Internet Services Unit ISU, SA
559 114 533 104 SWITCH Peering requests: peering at switch.c
1103 97 1759 84 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 26 73 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 78 462 78 BELWUE BelWue-Koordination, DE
3267 77 26 67 NIKS, RU
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 210 178 42 Rede Nacional de Ensino e Pesquisa, BR
28391 154 10 68 Universidad Juarez Autonoma de Tabasco, M
11340 110 25 53 Red Universitaria Nacional, CL
271640 66 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
61468 51 5 17 CEDIA, EC
2715 50 100 36 Fundacao Carlos Chagas Filho de Amparo a
4270 48 16 2 Red de Interconexion Universitaria, AR
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
3596 40 8 4 Universidad Autonoma Metropolitana, MX
28614 38 2 2 Fundacao Universidade Regional de Blumena
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
36914 441 82 3 KENET-AS, KE
2018 381 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37215 33 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
327700 15 16 1 MoRENet, MZ
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
37654 6 0 5 RwEdNet-AS, RW
37520 3 16 3 Rhodes-Univ, 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 590 2170 464 SINET-AS Research Organization of Informa
36914 441 82 3 KENET-AS, KE
2018 381 319 71 TENET-1, ZA
680 283 1899 249 DFN Verein zur Foerderung eines Deutschen
1916 210 178 42 Rede Nacional de Ensino e Pesquisa, BR
376 201 162 150 RISQ-AS, CA
5786 197 16 1 UPRENET, PR
1237 191 74 145 KREONET-AS-KR KISTI, KR
786 186 1767 183 JANET Jisc Services Limited, GB
58647 180 18 2 KAGAWAU-AS Kagawa University, JP
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 441 438 KENET-AS, KE
2018 381 310 TENET-1, ZA
5786 197 196 UPRENET, PR
58647 180 178 KAGAWAU-AS Kagawa University, JP
1916 210 168 Rede Nacional de Ensino e Pesquisa, BR
2920 175 168 LACOE, US
18558 140 136 NETBLK-RCOEK, US
8895 133 128 ISU Internet Services Unit ISU, SA
55824 132 113 NKN-CORE-NW NKN Core Network, IN
81 134 101 NCREN, US
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
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS
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 /10:1 /11:1 /12:11
/13:18 /14:31 /15:113 /16:1904 /17:414 /18:440
/19:534 /20:768 /21:785 /22:1342 /23:1361 /24:9858
/25:18 /26:17 /27:24 /28:1 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
5786 196 197 UPRENET, PR
28391 154 154 Universidad Juarez Autonoma de Tabasco, MX
58647 149 180 KAGAWAU-AS Kagawa University, JP
2920 135 175 LACOE, US
55824 124 132 NKN-CORE-NW NKN Core Network, IN
36914 123 441 KENET-AS, KE
2018 119 381 TENET-1, ZA
23024 92 95 OCDE, US
1736 78 79 MU-AS, US
21976 71 91 NJEDGE-NET, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 5:15 8:2 12:1 14:92 23:6
24:3 31:1 35:3 37:8 38:10 40:1
41:157 42:1 44:5 45:48 46:4 47:1
49:10 50:2 52:1 59:18 61:3 62:9
63:32 64:42 65:4 66:42 67:40 68:12
69:19 70:2 71:1 72:7 74:53 76:41
77:10 78:3 79:10 80:12 81:25 82:7
83:7 84:7 85:45 86:5 87:1 89:11
91:41 92:2 93:13 94:2 95:2 96:5
97:1 98:2 102:2 103:328 104:78 108:8
109:4 111:20 113:2 114:24 116:9 117:61
118:33 119:1 121:18 122:8 123:8 125:2
128:55 129:36 130:96 131:59 132:52 133:154
134:103 136:197 137:51 138:58 139:6 140:31
141:3 142:52 143:26 144:25 145:2 146:137
147:60 148:195 149:12 150:40 151:9 152:140
153:14 154:31 155:63 156:133 157:27 158:30
159:19 160:31 161:17 162:21 163:60 164:11
165:49 166:1 167:10 168:120 169:7 170:90
171:1 172:2 173:7 175:16 177:5 179:13
180:15 181:1 182:11 184:2 185:52 186:3
187:21 188:13 189:3 190:18 191:13 192:1300
193:271 194:137 195:75 196:146 197:314 198:425
199:238 200:325 201:37 202:576 203:439 204:366
205:130 206:207 207:222 208:65 209:104 210:139
211:3 212:165 213:6 216:89 217:9 218:2
219:6 220:17 222:1
End of report
More information about the ren-bgp-stats-all
mailing list