[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Fri Jun 14 20:10:37 UTC 2024
IPv4 R&E Routing Table Report 20:10 GMT Fri 14 Jun, 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: 17030
Prefixes after maximum aggregation (per Origin AS): 9763
Deaggregation factor: 1.74
Unique aggregates announced (without unneeded subnets): 10827
Number of IPv4 prefixes with a valid ROA: 5782
Number of IPv4 prefixes with an invalid ROA: 7
Number of IPv4 prefixes with no ROA: 11241
Total ASes present in the Internet Routing Table: 2604
Prefixes per ASN: 6.54
Origin-only ASes present in the Internet Routing Table: 2267
Origin ASes announcing only one prefix: 1000
Transit ASes present in the Internet Routing Table: 337
Transit-only ASes present in the Internet Routing Table: 65
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 16
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 3
Number of instances of unregistered ASNs: 3
Number of 32-bit ASNs allocated by the RIRs: 44755
Number of 32-bit ASNs visible in the Routing Table: 619
Prefixes from 32-bit ASNs in the Routing Table: 1740
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: 1
Number of addresses announced to Internet: 191719440
Equivalent to 11 /8s, 109 /16s and 104 /24s
Percentage of available address space announced: 5.2
Percentage of allocated address space announced: 5.2
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.6
Total number of prefixes smaller than registry allocations: 1934
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3815
Total APNIC prefixes after maximum aggregation: 2051
APNIC Deaggregation factor: 1.86
Prefixes being announced from the APNIC address blocks: 3816
Unique aggregates announced from the APNIC address blocks: 2390
APNIC Region origin ASes present in the Internet Routing Table: 507
APNIC Prefixes per ASN: 7.53
APNIC Region origin ASes announcing only one prefix: 224
APNIC Region transit ASes present in the Internet Routing Table: 46
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 12
Number of APNIC region 32-bit ASNs visible in the Routing Table: 202
Number of APNIC addresses announced to Internet: 44428032
Equivalent to 2 /8s, 165 /16s and 235 /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 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: 7482
Total ARIN prefixes after maximum aggregation: 4199
ARIN Deaggregation factor: 1.78
Prefixes being announced from the ARIN address blocks: 7497
Unique aggregates announced from the ARIN address blocks: 4652
ARIN Region origin ASes present in the Internet Routing Table: 1181
ARIN Prefixes per ASN: 6.35
ARIN Region origin ASes announcing only one prefix: 419
ARIN Region transit ASes present in the Internet Routing Table: 149
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: 196
Number of ARIN addresses announced to Internet: 83321600
Equivalent to 4 /8s, 247 /16s and 99 /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 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: 3523
Total RIPE prefixes after maximum aggregation: 2827
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 3511
Unique aggregates announced from the RIPE address blocks: 2874
RIPE Region origin ASes present in the Internet Routing Table: 665
RIPE Prefixes per ASN: 5.28
RIPE Region origin ASes announcing only one prefix: 293
RIPE Region transit ASes present in the Internet Routing Table: 99
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 150
Number of RIPE addresses announced to Internet: 57518096
Equivalent to 3 /8s, 109 /16s and 168 /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 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: 1363
Total LACNIC prefixes after maximum aggregation: 542
LACNIC Deaggregation factor: 2.51
Prefixes being announced from the LACNIC address blocks: 1361
Unique aggregates announced from the LACNIC address blocks: 727
LACNIC Region origin ASes present in the Internet Routing Table: 160
LACNIC Prefixes per ASN: 8.51
LACNIC Region origin ASes announcing only one prefix: 55
LACNIC Region transit ASes present in the Internet Routing Table: 25
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 14
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 64
Number of LACNIC addresses announced to Internet: 4132608
Equivalent to 0 /8s, 63 /16s and 15 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-274844 + 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: 844
Total AfriNIC prefixes after maximum aggregation: 141
AfriNIC Deaggregation factor: 5.99
Prefixes being announced from the AfriNIC address blocks: 844
Unique aggregates announced from the AfriNIC address blocks: 183
AfriNIC Region origin ASes present in the Internet Routing Table: 24
AfriNIC Prefixes per ASN: 35.17
AfriNIC Region origin ASes announcing only one prefix: 9
AfriNIC Region transit ASes present in the Internet Routing Table: 6
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 7
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 7
Number of AfriNIC addresses announced to Internet: 2318848
Equivalent to 0 /8s, 35 /16s and 98 /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 581 2111 456 SINET-AS Research Organization of Infor
1237 191 74 142 UNASSIGNED
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 172 329 115 UNASSIGNED
55824 133 19 20 NKN-CORE-NW NKN Core Network, IN
4538 113 4176 70 ERX-CERNET-BKB China Education and Rese
9411 82 16 2 UNASSIGNED
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, T
4621 70 37 10 UNASSIGNED
23570 59 5 11 UNASSIGNED
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
376 203 162 152 RISQ-AS, CA
5786 199 16 1 UPRENET, PR
2920 175 34 7 LACOE, US
2152 149 507 94 CSUNET-NW, US
18558 140 18 4 NETBLK-RCOEK, US
81 132 501 32 NCREN, US
23024 106 7 22 OCDE, US
237 85 543 51 UNASSIGNED
1736 79 16 1 MU-AS, US
21976 79 51 18 NJEDGE-NET, 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
680 282 1899 249 DFN Verein zur Foerderung eines Deutsch
786 184 1767 181 JANET Jisc Services Limited, GB
8895 133 24 5 ISU Internet Services Unit ISU, SA
559 113 533 103 SWITCH Peering requests: peering at switch
1103 95 1503 83 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 27 73 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnol
553 78 462 78 BELWUE BelWue-Koordination, DE
3267 76 26 66 RUNNET, 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
28391 153 10 67 Universidad Juarez Autonoma de Tabasco,
1916 139 176 42 Rede Nacional de Ensino e Pesquisa, BR
11340 109 25 52 Red Universitaria Nacional, CL
271640 65 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
4270 50 17 3 Red de Interconexion Universitaria, AR
19611 48 17 2 Associacao Antonio Vieira - Unisinos, B
2715 46 99 35 Fundacao Carlos Chagas Filho de Amparo
61468 43 3 14 CEDIA, EC
28614 38 2 2 Fundacao Universidade Regional de Blume
3596 37 8 4 Universidad Autonoma Metropolitana, MX
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 381 319 71 TENET-1, ZA
36914 252 82 3 KENET-AS, KE
8094 47 48 18 PUKNET, ZA
327700 43 16 1 MoRENet, MZ
37215 36 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37182 12 8 1 TERNET, TZ
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
37654 6 1 6 RwEdNet-AS, RW
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 581 2111 456 SINET-AS Research Organization of Infor
2018 381 319 71 TENET-1, ZA
680 282 1899 249 DFN Verein zur Foerderung eines Deutsch
36914 252 82 3 KENET-AS, KE
376 203 162 152 RISQ-AS, CA
5786 199 16 1 UPRENET, PR
1237 191 74 142 UNASSIGNED
786 184 1767 181 JANET Jisc Services Limited, GB
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
2920 175 34 7 LACOE, US
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 381 310 TENET-1, ZA
36914 252 249 KENET-AS, KE
5786 199 198 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
2920 175 168 LACOE, US
18558 140 136 NETBLK-RCOEK, US
8895 133 128 ISU Internet Services Unit ISU, SA
55824 133 113 NKN-CORE-NW NKN Core Network, IN
81 132 100 NCREN, US
1916 139 97 Rede Nacional de Ensino e Pesquisa, BR
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 UNASSIGNED
18838 UNALLOCATED 168.8.240.0/20 3480 PEACHNET-AS3480, US
18838 UNALLOCATED 168.9.0.0/20 3480 PEACHNET-AS3480, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
192.31.196.0/24 Origin: 112 UNASSIGNED
192.31.196.0/24 Transit: 7500 M-ROOT-DNS WIDE Project, JP
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 /10:1 /11:1 /12:10
/13:18 /14:31 /15:116 /16:1902 /17:408 /18:432
/19:525 /20:784 /21:768 /22:1371 /23:1345 /24:9309
/25:6 /26:1 /27:0 /28:1 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 239 252 KENET-AS, KE
8895 128 133 ISU Internet Services Unit ISU, SA
23024 49 106 OCDE, US
32440 38 64 LONI, US
327700 38 43 MoRENet, MZ
3267 35 76 RUNNET, RU
200521 33 56 SEAP-AGE, ES
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
25977 30 44 HCCS, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1 5:15 8:2 12:1 14:92 23:4
24:3 31:1 35:3 38:10 40:1 41:199
44:5 45:39 46:5 47:1 49:9 50:3
52:1 59:18 61:3 62:7 63:32 64:42
65:1 66:46 67:41 68:10 69:19 70:2
71:1 72:7 74:51 76:41 77:10 78:3
79:10 80:14 81:24 82:6 83:7 84:8
85:30 86:5 87:1 89:11 91:46 92:2
93:5 94:2 95:2 97:1 98:2 103:259
104:76 108:8 109:6 114:24 116:8 117:61
118:33 119:1 121:2 122:8 123:8 125:2
128:83 129:40 130:84 131:61 132:66 133:157
134:103 136:198 137:51 138:57 139:5 140:34
141:3 142:26 143:25 144:23 145:2 146:135
147:60 148:193 149:11 150:37 151:9 152:136
153:15 154:29 155:64 156:134 157:21 158:34
159:22 160:30 161:16 162:21 163:58 164:14
165:48 166:1 167:13 168:121 169:6 170:91
171:1 172:3 173:6 175:18 176:8 177:4
179:14 180:14 181:1 182:1 184:2 185:48
186:3 187:18 188:13 189:3 190:18 191:13
192:1288 193:259 194:140 195:73 196:154 197:116
198:418 199:239 200:253 201:37 202:518 203:407
204:353 205:129 206:191 207:202 208:68 209:110
210:118 211:14 212:163 213:6 216:91 217:10
218:3 219:5 220:17 222:1
End of report
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