[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Thu Dec 5 20:10:38 UTC 2024
IPv4 R&E Routing Table Report 20:10 GMT Thu 05 Dec, 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: 15382
Prefixes after maximum aggregation (per Origin AS): 7753
Deaggregation factor: 1.98
Unique aggregates announced (without unneeded subnets): 8857
Number of IPv4 prefixes with a valid ROA: 5848
Number of IPv4 prefixes with an invalid ROA: 6
Number of IPv4 prefixes with no ROA: 9528
Total ASes present in the Internet Routing Table: 2172
Prefixes per ASN: 7.08
Origin-only ASes present in the Internet Routing Table: 1886
Origin ASes announcing only one prefix: 812
Transit ASes present in the Internet Routing Table: 286
Transit-only ASes present in the Internet Routing Table: 60
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: 45958
Number of 32-bit ASNs visible in the Routing Table: 507
Prefixes from 32-bit ASNs in the Routing Table: 1491
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: 2
Number of addresses announced to Internet: 147882240
Equivalent to 8 /8s, 208 /16s and 129 /24s
Percentage of available address space announced: 4.0
Percentage of allocated address space announced: 4.0
Percentage of available address space allocated: 100.1
Percentage of address space in use by end-sites: 99.6
Total number of prefixes smaller than registry allocations: 1818
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3961
Total APNIC prefixes after maximum aggregation: 2108
APNIC Deaggregation factor: 1.88
Prefixes being announced from the APNIC address blocks: 3961
Unique aggregates announced from the APNIC address blocks: 2540
APNIC Region origin ASes present in the Internet Routing Table: 543
APNIC Prefixes per ASN: 7.29
APNIC Region origin ASes announcing only one prefix: 236
APNIC Region transit ASes present in the Internet Routing Table: 54
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 28
Number of APNIC region 32-bit ASNs visible in the Routing Table: 201
Number of APNIC addresses announced to Internet: 44716288
Equivalent to 2 /8s, 170 /16s and 81 /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: 8059
Total ARIN prefixes after maximum aggregation: 4349
ARIN Deaggregation factor: 1.85
Prefixes being announced from the ARIN address blocks: 8066
Unique aggregates announced from the ARIN address blocks: 4761
ARIN Region origin ASes present in the Internet Routing Table: 1202
ARIN Prefixes per ASN: 6.71
ARIN Region origin ASes announcing only one prefix: 431
ARIN Region transit ASes present in the Internet Routing Table: 151
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 16
Number of ARIN region 32-bit ASNs visible in the Routing Table: 204
Number of ARIN addresses announced to Internet: 82915584
Equivalent to 4 /8s, 241 /16s and 49 /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, 45/8, 47/8, 48/8, 50/8, 52/8,
54/8, 55/8, 56/8, 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: 885
Total RIPE prefixes after maximum aggregation: 617
RIPE Deaggregation factor: 1.43
Prefixes being announced from the RIPE address blocks: 879
Unique aggregates announced from the RIPE address blocks: 653
RIPE Region origin ASes present in the Internet Routing Table: 189
RIPE Prefixes per ASN: 4.65
RIPE Region origin ASes announcing only one prefix: 81
RIPE Region transit ASes present in the Internet Routing Table: 29
Average RIPE Region AS path length visible: 4.5
Max RIPE Region AS path length visible: 11
Number of RIPE region 32-bit ASNs visible in the Routing Table: 30
Number of RIPE addresses announced to Internet: 13841920
Equivalent to 0 /8s, 211 /16s and 54 /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,
53/8, 57/8, 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: 1385
Total LACNIC prefixes after maximum aggregation: 539
LACNIC Deaggregation factor: 2.57
Prefixes being announced from the LACNIC address blocks: 1383
Unique aggregates announced from the LACNIC address blocks: 719
LACNIC Region origin ASes present in the Internet Routing Table: 155
LACNIC Prefixes per ASN: 8.92
LACNIC Region origin ASes announcing only one prefix: 55
LACNIC Region transit ASes present in the Internet Routing Table: 24
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: 65
Number of LACNIC addresses announced to Internet: 4131840
Equivalent to 0 /8s, 63 /16s and 12 /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: 1091
Total AfriNIC prefixes after maximum aggregation: 139
AfriNIC Deaggregation factor: 7.85
Prefixes being announced from the AfriNIC address blocks: 1091
Unique aggregates announced from the AfriNIC address blocks: 182
AfriNIC Region origin ASes present in the Internet Routing Table: 22
AfriNIC Prefixes per ASN: 49.59
AfriNIC Region origin ASes announcing only one prefix: 9
AfriNIC Region transit ASes present in the Internet Routing Table: 7
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 6
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 7
Number of AfriNIC addresses announced to Internet: 2276096
Equivalent to 0 /8s, 34 /16s and 187 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 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 592 2200 462 SINET-AS Research Organization of Informa
1237 191 74 145 KREONET-AS-KR KISTI, KR
58647 181 18 2 KAGAWAU-AS Kagawa University, JP
7575 170 313 113 AARNET-AS-AP Australian Academic and Rese
55824 132 18 18 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
2152 511 507 99 CENIC-2152, US
2920 229 44 49 LACOE, US
376 201 162 150 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
18558 141 18 5 NETBLK-RCOEK, US
81 134 517 33 NCREN, US
23024 95 7 21 OCDE, US
21976 91 50 17 NJEDGE-NET, US
237 82 541 48 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
8895 132 24 5 ISU Internet Services Unit ISU, SA
1103 96 1743 83 SURFNET-NL SURFnet, The Netherlands, NL
3267 77 27 67 NIKS, RU
1653 52 150 49 SUNET SUNET Swedish University Network, E
1741 39 149 18 FUNETAS, FI
3218 21 4 18 COSMOS-3218-AS AS-COSMOS root, RU
8674 16 2 11 NETNOD-IX Netnod AB, SE
1880 14 1 7 STUPI, SE
224 13 256 13 UNINETT UNINETT, The Norwegian University
1101 12 465 12 IP-EEND-AS IP-EEND BV, NL
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 158 178 41 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 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
61468 52 5 18 CEDIA, EC
2715 49 99 35 Fundacao Carlos Chagas Filho de Amparo a
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
4270 46 16 1 Red de Interconexion Universitaria, AR
28614 38 2 2 Fundacao Universidade Regional de Blumena
1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S
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 547 82 3 KENET-AS, KE
2018 381 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37215 32 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
327700 16 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 592 2200 462 SINET-AS Research Organization of Informa
36914 547 82 3 KENET-AS, KE
2152 511 507 99 CENIC-2152, US
2018 381 319 71 TENET-1, ZA
2920 229 44 49 LACOE, US
376 201 162 150 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
1237 191 74 145 KREONET-AS-KR KISTI, KR
58647 181 18 2 KAGAWAU-AS Kagawa University, JP
7575 170 313 113 AARNET-AS-AP Australian Academic and Rese
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 547 544 KENET-AS, KE
2152 511 412 CENIC-2152, US
2018 381 310 TENET-1, ZA
5786 198 197 UPRENET, PR
2920 229 180 LACOE, US
58647 181 179 KAGAWAU-AS Kagawa University, JP
18558 141 136 NETBLK-RCOEK, US
8895 132 127 ISU Internet Services Unit ISU, SA
1916 158 117 Rede Nacional de Ensino e Pesquisa, BR
55824 132 114 NKN-CORE-NW NKN Core Network, IN
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
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
202.14.117.0/24 Origin: 17827 STOU-AS-TH Sukhothai Thammathirat Open U
202.14.117.0/24 Transit: 4621 UNINET-AS-AP UNINET-, TH
203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP The University
203.9.156.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res
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
/13:17 /14:26 /15:82 /16:1364 /17:357 /18:394
/19:462 /20:670 /21:619 /22:1089 /23:1180 /24:9109
/25:0 /26:0 /27:0 /28:0 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 523 547 KENET-AS, KE
8895 127 132 ISU Internet Services Unit ISU, SA
2152 61 511 CENIC-2152, US
23024 37 95 OCDE, US
32440 37 63 LONI, US
3267 34 77 NIKS, RU
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
25977 30 44 HCCS, US
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 8:2 12:2 14:93 23:6 24:3
35:3 38:11 41:227 42:1 44:3 45:44
47:1 49:10 50:2 52:1 59:18 61:3
62:2 63:32 64:42 65:5 66:43 67:40
68:12 69:19 70:2 71:1 72:7 74:50
76:41 77:8 80:5 81:1 82:4 83:1
84:2 85:20 86:5 87:1 89:2 91:8
92:2 93:1 96:5 97:1 98:2 102:2
103:288 104:78 108:8 109:4 111:20 113:1
114:24 116:9 117:61 118:33 119:1 121:18
122:8 123:8 125:2 128:53 129:30 130:97
131:58 132:65 133:154 134:100 136:198 137:93
138:57 139:5 140:32 141:3 142:53 143:24
144:25 146:136 147:57 148:188 149:12 150:40
151:7 152:139 153:3 154:32 155:64 156:132
157:27 158:30 159:18 160:31 161:15 162:21
163:60 164:11 165:47 166:1 167:26 168:119
169:7 170:89 171:1 172:2 173:7 175:16
177:6 179:13 180:15 181:1 182:11 184:3
185:11 186:3 187:21 188:4 189:2 190:18
191:13 192:906 193:37 194:56 195:29 196:146
197:330 198:506 199:239 200:281 201:37 202:574
203:438 204:384 205:170 206:207 207:301 208:65
209:151 210:139 211:3 212:124 213:2 216:91
218:2 219:6 220:17 222:1
End of report
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