[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at frr.nsrc.org
Tue Nov 29 20:10:36 UTC 2022
IPv4 R&E Routing Table Report 20:10 GMT Tue 29 Nov, 2022
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: 14447
Prefixes after maximum aggregation (per Origin AS): 7742
Deaggregation factor: 1.87
Unique aggregates announced (without unneeded subnets): 8936
Number of IPv4 prefixes with a valid ROA: 2821
Number of IPv4 prefixes with an invalid ROA: 38
Number of IPv4 prefixes with no ROA: 11588
Total ASes present in the Internet Routing Table: 2169
Prefixes per ASN: 6.66
Origin-only ASes present in the Internet Routing Table: 1886
Origin ASes announcing only one prefix: 822
Transit ASes present in the Internet Routing Table: 283
Transit-only ASes present in the Internet Routing Table: 48
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: 19
Max AS path prepend of ASN ( 10497) 11
Prefixes from unregistered ASNs in the Routing Table: 5
Number of instances of unregistered ASNs: 5
Number of 32-bit ASNs allocated by the RIRs: 40734
Number of 32-bit ASNs visible in the Routing Table: 494
Prefixes from 32-bit ASNs in the Routing Table: 1479
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 2
Number of addresses announced to Internet: 151862272
Equivalent to 9 /8s, 13 /16s and 60 /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: 99.6
Total number of prefixes smaller than registry allocations: 1413
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4026
Total APNIC prefixes after maximum aggregation: 2160
APNIC Deaggregation factor: 1.86
Prefixes being announced from the APNIC address blocks: 4027
Unique aggregates announced from the APNIC address blocks: 2540
APNIC Region origin ASes present in the Internet Routing Table: 564
APNIC Prefixes per ASN: 7.14
APNIC Region origin ASes announcing only one prefix: 250
APNIC Region transit ASes present in the Internet Routing Table: 55
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 15
Number of APNIC region 32-bit ASNs visible in the Routing Table: 221
Number of APNIC addresses announced to Internet: 45078784
Equivalent to 2 /8s, 175 /16s and 217 /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, 131072-151865
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: 7320
Total ARIN prefixes after maximum aggregation: 4194
ARIN Deaggregation factor: 1.75
Prefixes being announced from the ARIN address blocks: 7331
Unique aggregates announced from the ARIN address blocks: 4708
ARIN Region origin ASes present in the Internet Routing Table: 1165
ARIN Prefixes per ASN: 6.29
ARIN Region origin ASes announcing only one prefix: 424
ARIN Region transit ASes present in the Internet Routing Table: 155
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 19
Number of ARIN region 32-bit ASNs visible in the Routing Table: 177
Number of ARIN addresses announced to Internet: 86888704
Equivalent to 5 /8s, 45 /16s and 209 /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: 924
Total RIPE prefixes after maximum aggregation: 629
RIPE Deaggregation factor: 1.47
Prefixes being announced from the RIPE address blocks: 917
Unique aggregates announced from the RIPE address blocks: 638
RIPE Region origin ASes present in the Internet Routing Table: 203
RIPE Prefixes per ASN: 4.52
RIPE Region origin ASes announcing only one prefix: 82
RIPE Region transit ASes present in the Internet Routing Table: 29
Average RIPE Region AS path length visible: 4.3
Max RIPE Region AS path length visible: 12
Number of RIPE region 32-bit ASNs visible in the Routing Table: 25
Number of RIPE addresses announced to Internet: 13187072
Equivalent to 0 /8s, 201 /16s and 56 /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: 1404
Total LACNIC prefixes after maximum aggregation: 577
LACNIC Deaggregation factor: 2.43
Prefixes being announced from the LACNIC address blocks: 1402
Unique aggregates announced from the LACNIC address blocks: 785
LACNIC Region origin ASes present in the Internet Routing Table: 158
LACNIC Prefixes per ASN: 8.87
LACNIC Region origin ASes announcing only one prefix: 60
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: 12
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 63
Number of LACNIC addresses announced to Internet: 4214016
Equivalent to 0 /8s, 64 /16s and 77 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-273820 + 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: 768
Total AfriNIC prefixes after maximum aggregation: 177
AfriNIC Deaggregation factor: 4.34
Prefixes being announced from the AfriNIC address blocks: 768
Unique aggregates announced from the AfriNIC address blocks: 263
AfriNIC Region origin ASes present in the Internet Routing Table: 26
AfriNIC Prefixes per ASN: 29.54
AfriNIC Region origin ASes announcing only one prefix: 6
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: 8
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 8
Number of AfriNIC addresses announced to Internet: 2493184
Equivalent to 0 /8s, 38 /16s and 11 /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 570 2156 457 SINET-AS Research Organization of Infor
1237 186 74 134 KREONET-AS-KR KISTI, KR
58647 175 18 2 KAGAWAU-AS Kagawa University, JP
7575 173 329 119 AARNET-AS-AP Australian Academic and Re
55824 115 18 11 NKN-CORE-NW NKN Core Network, IN
4538 110 4160 69 ERX-CERNET-BKB China Education and Rese
4621 70 37 10 UNINET-AS-AP UNINET-, TH
9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T
4762 65 4 1 MAHIDOL-BORDER-AS Mahidol University, T
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
376 203 178 152 RISQ-AS, CA
5786 199 16 1 UPRENET, PR
2152 146 507 90 CSUNET-NW, US
18558 134 18 4 NETBLK-RCOEK, US
23024 113 7 17 OCDE, US
2920 108 34 7 LACOE, US
32531 90 6 60 FORDHAM-UNIVERSITY, US
21976 85 51 18 NJEDGE-NET, US
1736 81 16 1 MU-AS, US
3 78 496 15 MIT-GATEWAYS, 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 135 24 4 ISU Internet Services Unit ISU, SA
1103 100 1520 87 SURFNET-NL SURFnet, The Netherlands, NL
3267 53 63 42 RUNNET, RU
1653 50 151 47 SUNET SUNET Swedish University Network,
1741 39 149 18 FUNETAS, FI
3218 21 4 18 COSMOS-3218-AS AS-COSMOS root, RU
8674 17 2 11 NETNOD-IX Netnod AB, SE
224 13 256 13 UNINETT UNINETT, The Norwegian Universi
1101 13 481 13 IP-EEND-AS IP-EEND BV, NL
47862 12 1 4 ANKABUT, AE
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 158 208 43 Rede Nacional de Ensino e Pesquisa, BR
28391 152 10 66 Universidad Juarez Autonoma de Tabasco,
11340 97 24 55 Red Universitaria Nacional, CL
1251 59 37 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO
2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo
4270 44 16 1 Red de Interconexion Universitaria, AR
61468 42 3 15 CEDIA, EC
28571 40 40 18 UNIVERSIDADE DE SAO PAULO, BR
28614 38 2 2 Fundacao Universidade Regional de Blume
19611 37 17 2 Associacao Antonio Vieira - Unisinos, B
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 375 319 72 TENET-1, ZA
36914 85 82 3 KENET-AS, KE
2561 68 4 33 EUN, EG
8094 48 48 15 PUKNET, ZA
327687 41 28 3 RENU, UG
327700 31 16 1 MoRENet, MZ
37182 30 8 1 TERNET, TZ
6879 24 2 9 ENSTINET-, EG
37501 11 49 6 UOFS, ZA
37654 10 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 570 2156 457 SINET-AS Research Organization of Infor
2018 375 319 72 TENET-1, ZA
376 203 178 152 RISQ-AS, CA
5786 199 16 1 UPRENET, PR
1237 186 74 134 KREONET-AS-KR KISTI, KR
58647 175 18 2 KAGAWAU-AS Kagawa University, JP
7575 173 329 119 AARNET-AS-AP Australian Academic and Re
1916 158 208 43 Rede Nacional de Ensino e Pesquisa, BR
28391 152 10 66 Universidad Juarez Autonoma de Tabasco,
2152 146 507 90 CSUNET-NW, 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 375 303 TENET-1, ZA
5786 199 198 UPRENET, PR
58647 175 173 KAGAWAU-AS Kagawa University, JP
8895 135 131 ISU Internet Services Unit ISU, SA
18558 134 130 NETBLK-RCOEK, US
1916 158 115 Rede Nacional de Ensino e Pesquisa, BR
55824 115 104 NKN-CORE-NW NKN Core Network, IN
2920 108 101 LACOE, US
23024 113 96 OCDE, US
28391 152 86 Universidad Juarez Autonoma de Tabasco, MX
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
22063 UNALLOCATED 153.10.0.0/16 2152 CSUNET-NW, US
33008 UNALLOCATED 162.248.66.0/24 11096 FLORIDANET, US
19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, US
395514 UNALLOCATED 205.213.88.0/24 2381 WISCNET1-AS, US
394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS
Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------
Prefix Origin AS Description
192.88.99.0/24 1103 SURFNET-NL SURFnet, The Netherlands, NL
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-spar
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
192.31.196.0/24 Origin: 112 UNASSIGNED
192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24 Origin: 1103 SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24 Transit: 11537 INTERNET2-RESEARCH-EDU, US
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 /12:9
/13:17 /14:26 /15:83 /16:1393 /17:346 /18:387
/19:445 /20:675 /21:624 /22:1096 /23:1144 /24:8198
/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
8895 130 135 ISU Internet Services Unit ISU, SA
36914 76 85 KENET-AS, KE
23024 52 113 OCDE, US
32440 34 49 LONI, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
25977 30 44 HCCS, US
263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
37182 29 30 TERNET, TZ
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:4 8:2 12:1 14:86 18:43 23:6
24:3 35:4 37:1 38:9 40:1 41:132
44:3 45:31 47:1 49:10 50:1 52:1
59:19 61:3 62:4 63:33 64:49 65:1
66:34 67:42 68:8 69:21 70:2 71:1
72:7 74:50 76:37 77:6 80:8 81:1
82:6 84:4 85:18 86:6 87:1 89:2
91:15 92:1 93:1 96:5 97:2 98:2
101:4 102:3 103:309 104:72 108:8 109:7
110:4 111:16 114:23 116:6 117:61 118:32
119:4 121:18 122:8 123:8 125:1 128:83
129:34 130:88 131:55 132:61 133:146 134:92
136:198 137:68 138:9 139:5 140:40 141:1
142:39 143:29 144:23 146:130 147:53 148:185
149:12 150:130 151:5 152:75 153:2 154:28
155:52 156:66 157:23 158:39 159:18 160:26
161:18 162:19 163:73 164:10 165:51 166:1
167:16 168:123 169:10 170:57 171:1 172:2
173:7 175:31 176:8 177:10 179:7 180:16
181:1 182:4 184:3 185:15 186:3 187:19
188:3 189:3 190:18 191:36 192:879 193:82
194:57 195:47 196:161 197:1 198:438 199:239
200:232 201:39 202:556 203:423 204:335 205:123
206:184 207:163 208:65 209:113 210:110 211:13
212:128 213:3 216:85 217:1 218:3 219:7
220:17 222:2
End of report
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