[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Fri Oct 25 20:10:38 UTC 2024
IPv4 R&E Routing Table Report 20:10 GMT Fri 25 Oct, 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: 17760
Prefixes after maximum aggregation (per Origin AS): 9887
Deaggregation factor: 1.80
Unique aggregates announced (without unneeded subnets): 10955
Number of IPv4 prefixes with a valid ROA: 7097
Number of IPv4 prefixes with an invalid ROA: 6
Number of IPv4 prefixes with no ROA: 10657
Total ASes present in the Internet Routing Table: 2588
Prefixes per ASN: 6.86
Origin-only ASes present in the Internet Routing Table: 2245
Origin ASes announcing only one prefix: 1000
Transit ASes present in the Internet Routing Table: 343
Transit-only ASes present in the Internet Routing Table: 63
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 16
Max AS path prepend of ASN (395156) 12
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: 45628
Number of 32-bit ASNs visible in the Routing Table: 615
Prefixes from 32-bit ASNs in the Routing Table: 1756
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: 192618640
Equivalent to 11 /8s, 123 /16s and 32 /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: 2229
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3720
Total APNIC prefixes after maximum aggregation: 2004
APNIC Deaggregation factor: 1.86
Prefixes being announced from the APNIC address blocks: 3720
Unique aggregates announced from the APNIC address blocks: 2380
APNIC Region origin ASes present in the Internet Routing Table: 483
APNIC Prefixes per ASN: 7.70
APNIC Region origin ASes announcing only one prefix: 214
APNIC Region transit ASes present in the Internet Routing Table: 46
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 12
Number of APNIC region 32-bit ASNs visible in the Routing Table: 184
Number of APNIC addresses announced to Internet: 44557568
Equivalent to 2 /8s, 167 /16s and 229 /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: 7950
Total ARIN prefixes after maximum aggregation: 4339
ARIN Deaggregation factor: 1.83
Prefixes being announced from the ARIN address blocks: 7963
Unique aggregates announced from the ARIN address blocks: 4763
ARIN Region origin ASes present in the Internet Routing Table: 1198
ARIN Prefixes per ASN: 6.65
ARIN Region origin ASes announcing only one prefix: 429
ARIN Region transit ASes present in the Internet Routing Table: 149
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: 83095040
Equivalent to 4 /8s, 243 /16s and 238 /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: 3572
Total RIPE prefixes after maximum aggregation: 2866
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 3560
Unique aggregates announced from the RIPE address blocks: 2906
RIPE Region origin ASes present in the Internet Routing Table: 663
RIPE Prefixes per ASN: 5.37
RIPE Region origin ASes announcing only one prefix: 292
RIPE Region transit ASes present in the Internet Routing Table: 102
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: 155
Number of RIPE addresses announced to Internet: 58618256
Equivalent to 3 /8s, 126 /16s and 113 /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: 1424
Total LACNIC prefixes after maximum aggregation: 533
LACNIC Deaggregation factor: 2.67
Prefixes being announced from the LACNIC address blocks: 1422
Unique aggregates announced from the LACNIC address blocks: 718
LACNIC Region origin ASes present in the Internet Routing Table: 153
LACNIC Prefixes per ASN: 9.29
LACNIC Region origin ASes announcing only one prefix: 51
LACNIC Region transit ASes present in the Internet Routing Table: 22
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: 64
Number of LACNIC addresses announced to Internet: 3994880
Equivalent to 0 /8s, 60 /16s and 245 /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: 1093
Total AfriNIC prefixes after maximum aggregation: 144
AfriNIC Deaggregation factor: 7.59
Prefixes being announced from the AfriNIC address blocks: 1093
Unique aggregates announced from the AfriNIC address blocks: 186
AfriNIC Region origin ASes present in the Internet Routing Table: 27
AfriNIC Prefixes per ASN: 40.48
AfriNIC Region origin ASes announcing only one prefix: 14
AfriNIC Region transit ASes present in the Internet Routing Table: 8
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: 8
Number of AfriNIC addresses announced to Internet: 2352384
Equivalent to 0 /8s, 35 /16s and 229 /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 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 59 4 34 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 434 507 98 CENIC-2152, US
2920 224 44 45 LACOE, US
376 201 162 150 RISQ-AS, CA
5786 197 16 1 UPRENET, PR
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
786 185 1767 182 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 76 26 66 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
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 523 82 3 KENET-AS, KE
2018 381 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
327700 37 16 1 MoRENet, MZ
37215 33 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
37654 5 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 523 82 3 KENET-AS, KE
2152 434 507 98 CENIC-2152, US
2018 381 319 71 TENET-1, ZA
680 283 1899 249 DFN Verein zur Foerderung eines Deutschen
2920 224 44 45 LACOE, US
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
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 523 520 KENET-AS, KE
2152 434 336 CENIC-2152, US
2018 381 310 TENET-1, ZA
5786 197 196 UPRENET, PR
2920 224 179 LACOE, US
58647 180 178 KAGAWAU-AS Kagawa University, JP
1916 210 168 Rede Nacional de Ensino e Pesquisa, BR
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
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 /12:11
/13:18 /14:31 /15:113 /16:1902 /17:409 /18:432
/19:534 /20:769 /21:793 /22:1360 /23:1408 /24:9972
/25:3 /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 502 523 KENET-AS, KE
8895 128 133 ISU Internet Services Unit ISU, SA
2152 41 434 CENIC-2152, US
23024 37 95 OCDE, US
32440 37 64 LONI, US
327700 36 37 MoRENet, MZ
3267 35 76 NIKS, RU
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
200521 32 55 SEAP-AGE, ES
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
41:242 42:1 44:4 45:43 46:4 47:1
49:10 50:2 52:1 59:18 61:3 62:8
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 84:8 85:45 86:5 87:1 89:11
91:43 92:2 93:13 94:2 95:2 96:5
97:1 98:2 102:2 103:222 104:79 108:8
109:2 111:16 113:2 114:24 116:9 117:61
118:33 119:1 121:18 122:8 123:8 125:2
128:54 129:36 130:96 131:59 132:51 133:154
134:103 136:197 137:83 138:58 139:6 140:31
141:3 142:52 143:26 144:24 145:2 146:136
147:60 148:195 149:12 150:36 151:9 152:140
153:14 154:30 155:63 156:133 157:26 158:29
159:22 160:30 161:17 162:21 163:59 164:11
165:49 166:1 167:25 168:120 169:7 170:89
171:1 172:2 173:7 175:5 177:6 179:13
180:15 182:1 184:2 185:50 186:3 187:21
188:13 189:3 190:18 191:13 192:1298 193:271
194:138 195:75 196:146 197:315 198:501 199:236
200:329 201:37 202:529 203:416 204:386 205:160
206:207 207:281 208:65 209:134 210:123 211:3
212:166 213:6 216:89 217:9 218:2 219:5
220:17 222:1
End of report
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